Tính chất tổng hợp và hấp phụ khí của hạt nano niken ferit

HANOI UNIVERSITY OF SCIENCE AND TECHNOLOGY MASTER THESIS Synthesis and gas adsorption properties of nickel ferrite nanoparticles CAO XUAN TRUONG Truong.CX211148M@sis.hust.edu.vn Materials Science Supervisor: Assoc Prof Nguyen Van Quy Dr Luong Ngoc Anh Institute: Signature Signature International Training Institute for Materials Science HA NOI, 04/2023 SOCIALIST REPUBLIC OF VIETNAM Independence – Freedom – Happiness CONFIRMATION OF MASTER’S THESIS ADJUSTMENT Full name of the author : Cao Xuan Truong Thesis topic: Synthesis and gas adsorption properties of nickel ferrite nanoparticles Major: Material Science Student ID: 20211148M The author, the supervisor, and the Committee confirmed that the author has adjusted and implemented the thesis according to the report of the Committee on April 28 th, 2023 with the following contents: - Literature review outline and content Spelling and printing errors Day Supervisor Month Year Thesis’s author Assoc Prof Nguyen Van Quy Cao Xuan Truong COMMITTEE’S CHAIRMAN Prof Nguyen Phuc Duong THESIS TOPIC Synthesis and gas adsorption properties of nickel ferrite nanoparticles Supervisor Assoc Prof Nguyen Van Quy Acknowledgement First of all, I would like to express my greatest gratitude toward my supervisor, Assoc Prof Nguyen Van Quy for being an ideal teacher, mentor, and thesis supervisor, offering advice and encouragement with a perfect blend of insight and humor I also desire to extend my appreciation to Dr Luong Ngoc Anh, Dr Nguyen Thanh Vinh and Dr Tran Van Dang for their invaluable recommendations and explanations related to my research topic I would also like to express my special thanks to all lecturers and employees at ITIMs for creating a wonderful environment while I was on my course I also thank the project grant number B2021-BKA-04 Sincerely, I would like to thank my lab-mates at Room 202 for their strong support, endless assistance, regular encouragement and inspirations every single day Last but not least, my special gratitude is expressed to my dear family members, who are always by my side, both financial and mental supportive during my master program Abstract Industrialization and modernization in today society bring about many benefits Pollution caused by these processes put people’s health and environmental status at risk It is urgent that a sensor with high sensitivity, stable operation, low cost, low energy consumption and mobility is developed to monitor the pollution status and prevent potential risk A quartz crystal microbalance (QCM) sensor is researched to meet those requirements This sensor can detect a small concentration of gas by mass change principle To enhance the adsorption capabilities, metal oxides are deposited on the electrode of QCM sensor Among the most considerable sensing materials, NiFe2O4 nanoparticles with porous structure, large specific area and various functioning group on its surface can be considered suitable for being a good sensing layer of QCM sensor The material is fabricated by hydrothermal and co-precipitation methods The characterization of NiFe2O4 was investigated by some measuring methods Then the QCM sensors are coated and tested their gas sensing ability by QCM200 system After various experiments, it can be assured that a QCM coated NiFe 2O4 sensor is capable of detecting SO2, NO2, H 2S at room temperature In addition, the results suggest that the material are most responsive to SO2 and little deviated after a long time operating The mechanism of physisorption of nickel ferrites is also presented STUDENT Cao Xuan Truong TABLE OF CONTENTS INTRODUCTION 12 CHAPTER LITERATURE REVIEW 14 1.1 1.2 1.3 Introduction of nickel ferrite (NiFe 2O4) 14 1.1.1 Overview of the structure of ferrites 14 1.1.2 Nickel Ferrite (NiFe2O4) 16 1.1.3 Fabrication methods 17 Introduction of quartz crystal microbalance (QCM) 18 1.2.1 Piezoelectric Effect 18 1.2.2 Quartz crystal microbalance 21 Quartz crystal microbalance gas sensor 24 1.3.1 Introduction of QCM gas sensor 24 1.3.2 QCM sensor working principle 25 CHAPTER EXPERIMENT DETAILS 28 2.1 2.2 2.3 Chemical and apparatus 28 2.1.1 Chemical 28 2.1.2 Apparatus 28 NiFe2O4 nanoparticles fabrication 28 2.2.1 NiFe2O4 nanoparticles fabrication by hydrothermal method 28 2.2.2 NiFe2O4 nanoparticles fabrication by co-precipitation method 29 Characterization methods 30 2.3.1 X-ray Diffraction (XRD) 30 2.3.2 Scanning Electron Microscope 30 2.3.3 Transmission electron microscope 31 2.3.4 Fourier Transform Infrared Spectroscopy (FTIR) 32 2.3.5 Surface area and pore size distribution measurements 33 2.4 Fabrication of NiFe 2O4 sensing layer on the QCM electrode and gas sensing measurement 33 2.4.1 Fabrication of NiFe2O sensing layer on QCM 34 2.4.2 Gas sensing measurement 35 CHAPTER RESULTS AND DISCUSSION 37 3.1 Fabrication method investigation 37 3.1.1 Co-precipitation method 37 3.1.2 3.2 3.3 Hydrothermal method 38 Characterization 39 3.2.1 X-ray Diffraction 39 3.2.2 SEM images 40 3.2.3 Fourier transform Infrared Spectra 40 3.2.4 BET and BJH analysis 42 Gas sensing properties of QCM coated NiFe 2O4 NPs 43 3.3.1 Mass density of NiFe2O4 NPs deposited on the electrode 43 3.3.2 Inorganic toxic gases adsorption ability 43 3.3.3 Long-term stability 49 3.3.4 Response and recover time 50 3.3.5 Selectivity 52 CONCLUSIONS 54 LIST OF PUBLICATION 62 ABBREVIATIONS BET Brunauer – Emmett – Teller BJH Barrett – Joyner – Halenda BVD Butterworth-Van Dyke DI Deionized water FTIR Fourier Transform Infrared Spectroscopy JCPDS Joint Committee on Powder Diffraction Standards ITIMS International Training Institute for Materials Science MFC Mass Flow Controller NFO NiFe2O4 NPs Nano particles ppm Parts per million QCM Quartz Crystal Microbalance sccm Standard cubic centimeters per minute SEM Scanning Electron Microscopy TEM Transmission Electron Microscope XRD X-ray Diffraction LIST OF FIGURES Figure 1.1 Schematic of a partial unit cell and ferrimagnetic ordering of spinel ferrite structure [44] 14 Figure 1.2 Cation distribution in spinel ferrites: (a) inverted ferrites, (b) manganese ferrites and (c) zinc manganese ferrites [18] 15 Figure 1.3 Atomic positions in the inverse spinel structure of NFO A portion of connecting (Fe,Ni)O6 octahedra around a FeO4 tetrahedron is also depicted, where “Oc” and “Te” in the suffix indicate the octahedron and tetrahedron 17 Figure 1.4 Typical device in hydrothermal method 18 Figure 1.5 The piezoelectric effect in the material: without piezoelectric polarization (A), the molecules subjected to an external force with charge forming (B), and piezoelectric effect on the surface Note that, P denotes polarization vector, F is applied external force [36] 19 Figure 1.6 Direct and inverse piezoelectric effect in the material 20 Figure 1.7 Practical application of the piezoelectric material [34] 20 Figure 1.8 The schematic of quartz crystal with electrode (a-b), the strain induced in an AT cut crystal on application of AC voltage (c), and the amplitude of vibration varies with the distance from the center of the sensor 22 Figure 1.9 The quartz crystal structure (A), AT-cut crystal (B), and crystal structure of -SiO2 (c) [44] 22 Figure 1.10 The Butterworth-Van Dyke (BVD) equivalent circuit for an unloaded quartz crystal microbalance, QCM under viscous and mass loading (A), and the device parameter versus frequency characteristic curve (B) [45] 23 Figure 1.11 The diagram of Quartz Crystal Microbalance oscillator 24 Figure 1.12 Crystal Holder components.[47] 24 Figure 1.13 (a) Schematic top view and cross-sectional view of QCM uncoated and coated with a sensing layer, and (b) the illustration of frequency decreasing due to active layer coating and during sensing measurements [50] 26 Figure 2.1 NiFe2O4 NPs hydrothermal method synthesis process 29 Figure 2.2 NiFe2O4 NPs co precipitation synthesis process 29 Figure 2.3 XRD measurement system in ITIMS 30 Figure 2.4 Working principle of scanning electron microscopy [60] 31 Figure 2.5 General layout of a TEM 32 Figure 2.6 (a) Schematic diagram of a Fourier transform infrared instrument (b) Michelson interferometer [64] 32 Figure 2.7 Spray coating system and spraying gun 35 Figure 2.8 Schematic diagram of gas measuring system 35 Figure 2.9 Gas measuring system 36 Figure 3.1 XRD spectra of NiFe2O4 at different annealing temperature (coprecipitation method) 37 Figure 3.2 TEM image of sample annealed at 600oC (left) and 800oC (right) 38 Figure 3.3 XRD spectra of NiFe 2O4 at different annealing temperature (hydrothermal method) 38 Figure 3.4 XRD spectra of NiFe 2O4 fabricated by co-precipitation (C - NFO) and hydrothermal method (H - NFO) 39 Figure 3.5 SEM image and size distribution figure of C - NFO sample 40 Figure 3.6 SEM image and size distribution figure of H - NFO sample 40 Figure 3.7 The Fourier transform infrared spectrum of C – NFO (a) and H – NFO (b) 41 Figure 3.8 Adsorption and desorption isotherm and pore size distribution of C NFO (a) and H - NFO (b) 42 Figure 3.9 Gas mass absorbed on the QCM-C - NFO and QCM-H – NFO 44 Figure 3.10 The relationships between the frequency shifts/adsorbed mass on the QCM C - NFO electrode and target gases concentrations from to 20 ppm of SO2 , NO2 46 Figure 3.11 The relationships between the frequency shifts/adsorbed mass on the QCM H - NFO electrode and target gases concentrations from to 20 ppm of SO2 , NO2 46 Figure 3.12 Linear dependence of the sensitivity factor on the SO 2, NO2 concentrations between 5ppm and 20ppm of two sensors 47 Figure 3.13 The comparison between SO2 and NO2 sensibility of both sensors 48 Figure 3.14 The long-term stability of gas adsorption performance 49 Figure 3.15 The response and recover time of C – NFO coated sensor at different concentration of SO2 (a) and NO2 (b) 50 Figure 3.16 The response and recover time of H – NFO coated sensor at different concentration of SO2 (a) and NO2 (b) 51 Figure 3.17 Response towards different gases in different concentrations of C NFO sample 52 Figure 3.18 Response towards different gases in different concentrations of H NFO sample 53 10 Table 3.5 Summarized information of QCM – H – NFO Con (ppm) 10 15 20 0.01943 0.0424 0.06184 0.08304 Δf (Hz) 1.1 2.4 3.5 4.7 S (‰) 0.1463 0.319 0.465 0.625 Δm (µg cm-2) 0.0159 0.0424 0.06007 0.07951 Δf (Hz) 0.9 2.4 3.4 4.5 S (‰) 0.1197 0.319 0.439 0.5722 Δm (µg cm-2) SO2 NO2 Figure 3.13 The comparison between SO2 and NO2 sensibility of both sensors 48 3.3.3 Long-term stability Not only is the response important to a gas sensor, but also the stability of it when operating in a long period of time Figure 3.9 has shown the periodic stability of the sensors so in this section, long term stability is investigated Both sensors are weekly recorded in a month to collect the results After weeks, there are no significant changes in the ability of adsorption of the material QCM – C - NFO exhibit a stability with SO2 According to the figure, the adsorption performance of C - NFO NPs sensor slightly fluctuate around 0.0538, 0.1603 and 0.2850 µg.cm -2 for 5, 10, 15 ppm Compared with the first experiment time, the mean data are only deviated 2.16% The same situation happened when recording the NO2 adsorption data of H - NFO sample The deviation is only 7,9% Figure 3.14 The long-term stability of gas adsorption performance 49 3.3.4 Response and recover time The response time of the sensor can be determined when the resonance frequency reached 90% of the maximum frequency shift in a measuring period In contrast, the recovery time is the moment the sensor recovers 90% of the maximum frequency shift (a) (b) Figure 3.15 The response and recover time of C – NFO coated sensor at different concentration of SO2 (a) and NO2 (b) 50 (a) (b) Figure 3.16 The response and recover time of H – NFO coated sensor at different concentration of SO2 (a) and NO2 (b) At the same reaction period, the response and recover time vary at different concentrations and different kinds of target gases However, the time that sensors need to reach 90% of the maximum frequency shift of SO is slightly shorter than that of NO2 in both sensors The same thing happens to the recovery time Meanwhile, H – NFO coated sensor responses and recovers faster than C – NFO coated sensor Compared to some sensing material, NiFe2O4 NPs show a better result, which detailed in the following table 51 Table 3.6 Comparison of SO response and recover time of different sensing material at the same concentrations Sensing material Con (ppm) t res/ trec (s) Reference MW-CNTs 15 100/90 [52] GO-NSs 15 80/100 [9] Fe3 O4 /αFeOOH nanorod 15 55/75 [77] NiFe2 O4 NPs 15 58/61* This study * the best result in this investigation 3.3.5 Selectivity Figure 3.17 Response towards different gases in different concentrations of C - NFO sample 52 Figure 3.18 Response towards different gases in different concentrations of H - NFO sample Apart from SO and NO2 presented in the previous section, other inorganic gases are investigated However, the QCM coated NiF2O4 sensors don’t respond well with these gases S – factor is used to defined the frequency shift per unit of gas concentration injected in the measuring chamber In general, S – factor mainly increase while increasing the gas concentration With the highest concentration, the S – factors are determined at 0.4, 0.34, and 0.19 (Hz/ppm) for SO2, NO 2, H2S respectively The same experiment was carried out with QCM – H - NFO sensor The recorded results are 0.235, 0.225 and 0.0037 (Hz/ppm) for SO2, NO , NH3 Thus, NiFe2 O4 NPs are more sensitive with SO than some reference inorganic toxic gas in room temperature The SO2, NO2 and H2S molecules are adsorbed by NiFe 2O4 NPs through the following mechanisms • The hydrogens bond between H atom of O-H active groups (as show in FT-IR spectra) and O/S atoms of (SO2, NO 2)/H2S [77] • The interaction of five semi-saturation 4D-orbitals of Fe 3+ ion with a lone pair electron of S atom in SO molecular via like-hydrogens bond [78][72] • The H 2S and SO adsorption capacity of the Ni-O bond (a theoretical study), in which H 2S has stronger adsorption reaction than SO2 [79] From the data, it can be assumed that QCM coated NiFe2O sensors are able to respond to SO2 better than NO2 , H2S and NH 3, which demonstrates that the molecular weight and pole-pole interaction of target gases strongly effect on the gas adsorption performance of the QCM sensor using NiFe2O4 NPs 53 CONCLUSIONS Based on the results and analysis presented above, there are some conclusions can be drawn: ✓ Successfully fabricate the NiFe2O4 NPs by co-precipitation method and hydrothermal method The as-synthesized materials have great uniformity, high purity, small size (~20nm in diameter), large specific area and pore size (SBET = 69.37 and 86.59 m2/g, D pore = 8.2 and 11.4 nm of C – NFO and H – NFO respectively), which is suitable for being the adsorption layer of mass changing sensor type ✓ Successfully synthesize the QCM coated NiFe2O with different mass density deposited on the electrode of the sensor ✓ Prove the capability of adsorbing some reference inorganic gases (response to SO2 is better than NO2, H 2S) on the surface of the fabricated material and the detection of those gases in room temperature ✓ Fabricated QCM sensors operate stably both in periodic cycles and long-term measurement with the deviation less than 8% ✓ The QCM coated NiFe2 O4 sensors show better performance in detecting SO2 rather than NO2, H 2S ✓ The methods of synthesizing NiFe2O4 don’t show significant impact on gas adsorption properties of the material ✓ Propose the gas sensing mechanisms of SO , NO2 and H2S There are also some issues need to be studied in the future: • Find the optimized amount of material deposited on the Au electrode for the best sensing performance • Investigate the adsorption of VOCs on the surface of the material • Study various morphologies and structures of NiFe 2O4 to determine the best one for QCM gas sensors 54 REFERENCES [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] P R Arghya Sardar, “SO2 Emission Control and Finding a Way Out to Produce Sulphuric Acid from Industrial SO2 Emission,” J Chem Eng Process Technol., vol 06, no 02, 2015, doi: 10.4172/2157-7048.1000230 Y K Ip, S F Chew, and D J Randall, “Ammonia toxicity, tolerance, and excretion,” in The American journal of clinical nutrition, 2001, pp 109– 148 H Song, Q Li, and Y Zhang, “CNT-based sensor array for selective and steady detection of SO2 and NO,” Mater Res Bull., vol 124, p 110772, Apr 2020, doi: 10.1016/j.materresbull.2020.110772 K Liu and C Zhang, “Volatile organic compounds gas sensor based on quartz crystal microbalance for fruit freshness detection: A review,” Food Chem., vol 334, p 127615, Jan 2021, doi: 10.1016/j.foodchem.2020.127615 L Wang, “Metal-organic frameworks for QCM-based gas sensors: A review,” Sensors Actuators A Phys., vol 307, no 12, p 111984, Jun 2020, doi: 10.1016/j.sna.2020.111984 A Alassi, M Benammar, and D Brett, “Quartz crystal microbalance electronic interfacing systems: A review,” Sensors (Switzerland), vol 17, no 12, pp 1–41, 2017, doi: 10.3390/s17122799 N L Bragazzi, D Amicizia, D Panatto, D Tramalloni, I Valle, and R Gasparini, Quartz-Crystal Microbalance (QCM) for Public Health: An Overview of Its Applications, 1st ed., vol 101 Elsevier Inc., 2015 H Fang et al., “Cu(OH)2 nanowires/graphene oxide composites based QCM humidity sensor with fast-response for real-time respiration monitoring,” Sensors Actuators, B Chem., vol 304, p 127313, 2020, doi: 10.1016/j.snb.2019.127313 V Van Cat et al., “Realization of graphene oxide nanosheets as a potential mass-type gas sensor for detecting NO2, SO2, CO, and NH3,” Materials Today Communications, vol 25 2020, doi: 10.1016/j.mtcomm.2020.101682 M M Aria, A Irajizad, F R Astaraei, S P Shariatpanahi, and R Sarvari, “Ethanol sensing properties of PVP electrospun membranes studied by quartz crystal microbalance,” Meas J Int Meas Confed., vol 78, pp 283–288, 2016, doi: 10.1016/j.measurement.2015.10.018 O Alev, N Sarıca, O Ưzdemir, L Ç Arslan, S Bükkưse, and Z Z Öztürk, “Cu-doped ZnO nanorods based QCM sensor for hazardous gases,” J Alloys Compd., vol 826, no 2, 2020, doi: 10.1016/j.jallcom.2020.154177 M S Alnarabiji, O Tantawi, A Ramli, N A Mohd Zabidi, O Ben Ghanem, and B Abdullah, “Comprehensive review of structured binary Ni-NiO catalyst: Synthesis, characterization and applications,” Renewable and Sustainable Energy Reviews, vol 114 p 109326, Oct 2019, doi: 10.1016/j.rser.2019.109326 S Atiq et al., “Synthesis and investigation of structural, morphological, 55 [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] magnetic, dielectric and impedance spectroscopic characteristics of Ni-Zn ferrite nanoparticles,” Ceram Int., vol 43, no 2, pp 2486–2494, Feb 2017, doi: 10.1016/j.ceramint.2016.11.046 D Maity, S G Choo, J Yi, J Ding, and J M Xue, “Synthesis of magnetite nanoparticles via a solvent-free thermal decomposition route,” Journal of Magnetism and Magnetic Materials, vol 321, no pp 1256– 1259, 2009, doi: 10.1016/j.jmmm.2008.11.013 A Albuquerque, J Ardisson, W A Macedo, J López, R Paniago, and A I Persiano, “Structure and magnetic properties of nanostructured Ni-ferrite,” J Magn Magn Mater., vol 226–230, pp 1379–1381, May 2001, doi: 10.1016/S0304-8853(00)00915-X A P G Rodrigues, D K S Gomes, J H Araújo, D M A Melo, N A S Oliveira, and R M Braga, “Nanoferrites of nickel doped with cobalt: Influence of Co2+ on the structural and magnetic properties,” Journal of Magnetism and Magnetic Materials, vol 374 pp 748–754, 2015, doi: 10.1016/j.jmmm.2014.09.045 C R Vestal and Z J Zhang, “Magnetic Spinel Ferrite Nanoparticles from Microemulsions,” ChemInform, vol 35, no 27 2004, doi: 10.1002/chin.200427201 D S Mathew and R S Juang, “An overview of the structure and magnetism of spinel ferrite nanoparticles and their synthesis in microemulsions,” Chemical Engineering Journal, vol 129, no 1–3 pp 51–65, 2007, doi: 10.1016/j.cej.2006.11.001 David Jiles, “Introduction to magnetism and magnetic materials,” Choice Rev Online, vol 29, no 05, pp 29-2776-29–2776, Jan 1992, doi: 10.5860/CHOICE.29-2776 S Mukherjee, S Pradip, A K Mishra, and D Das, “Zn substituted NiFe2O4 with very high saturation magnetization and negligible dielectric loss synthesized via a soft chemical route,” Appl Phys A, vol 116, no 1, pp 389–393, Jul 2014, doi: 10.1007/s00339-013-8140-2 A Ghasemi and M Mousavinia, “Structural and magnetic evaluation of substituted NiZnFe2O particles synthesized by conventional sol-gel method,” Ceramics International, vol 40, no pp 2825–2834, 2014, doi: 10.1016/j.ceramint.2013.10.031 X Wu, W Chen, W Wu, H Li, and C Lin, “Structural and Magnetic Properties Evolution of Li-Substituted Co0.5Ni0.5Fe2O4 Ferrite,” J Electron Mater., vol 46, no 1, pp 199–207, Jan 2017, doi: 10.1007/s11664-016-4877-7 J L Xie, M Han, L Chen, R Kuang, and L Deng, “Microwaveabsorbing properties of NiCoZn spinel ferrites,” Journal of Magnetism and Magnetic Materials, vol 314, no pp 37–42, 2007, doi: 10.1016/j.jmmm.2007.02.124 L M Corliss, J M Hastings, and F G Brockman, “A neutron diffraction study of magnesium ferrite,” Physical Review, vol 90, no pp 1013– 1018, 1953, doi: 10.1103/PhysRev.90.1013 G Jian, F Xue, C Zhang, C Yan, N Zhao, and C P Wong, “Orientation 56 [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] dependence of elastic and piezomagnetic properties in NiFe2O4,” J Magn Magn Mater., vol 442, pp 141–144, Nov 2017, doi: 10.1016/j.jmmm.2017.06.103 W M Zhang, X L Wu, J S Hu, Y G Guo, and L J Wan, “Carbon coated Fe3O4 nanospindles as a superior anode material for lithium-ion batteries,” Advanced Functional Materials, vol 18, no 24 pp 3941–3946, 2008, doi: 10.1002/adfm.200801386 G Zhou et al., “Graphene-wrapped Fe3O4 anode material with improved reversible capacity and cyclic stability for lithium ion batteries,” Chemistry of Materials, vol 22, no 18 pp 5306–5313, 2010, doi: 10.1021/cm101532x D Zhang et al., “Magnetite (Fe 3O 4) core-shell nanowires: Synthesis and magnetoresistance,” Nano Letters, vol 4, no 11 pp 2151–2155, 2004, doi: 10.1021/nl048758u M Ferrari, “Cancer nanotechnology: opportunities and challenges, ” Nat Rev Cancer, vol 5, no 3, pp 161–171, Mar 2005, doi: 10.1038/nrc1566 A Jordan, R Scholz, P Wust, H Fähling, and R Felix, “Magnetic fluid hyperthermia (MFH): Cancer treatment with AC magnetic field induced excitation of biocompatible superparamagnetic nanoparticles,” Journal of Magnetism and Magnetic Materials, vol 201, no 1–3 pp 413–419, 1999, doi: 10.1016/S0304-8853(99)00088-8 J J William, I M Babu, and G Muralidharan, “Electrochemical performance of PVA stabilized nickel ferrite nanoparticles via microwave route,” 2017, p 050048, doi: 10.1063/1.4980281 Y X Gan, A H Jayatissa, Z Yu, X Chen, and M Li, “Hydrothermal Synthesis of Nanomaterials,” J Nanomater., vol 2020, pp 1–3, Jan 2020, doi: 10.1155/2020/8917013 Z Rák and D W Brenner, “Negative surface energies of nickel ferrite nanoparticles under hydrothermal conditions,” Journal of Nanomaterials, vol 2019 2019, doi: 10.1155/2019/5268415 W Qian, W Yang, Y Zhang, C R Bowen, and Y Yang, “Piezoelectric Materials for Controlling Electro-Chemical Processes,” Nano-Micro Lett., vol 12, no 1, p 149, Dec 2020, doi: 10.1007/s40820-020-00489-z D D’Alessandro et al., “Piezoelectric Signals in Vascularized Bone Regeneration,” Biomolecules, vol 11, no 11, p 1731, Nov 2021, doi: 10.3390/biom11111731 D A Aldahiry, D A Bajaba, N M Basalamah, and M M Ahmed, “Piezoelectric Transducer as an Energy Harvester: A Review,” Yanbu J Eng Sci., vol 19, no 1, Feb 2022, doi: 10.53370/001c.33771 A Mayeen and N Kalarikkal, “Development of ceramic-controlled piezoelectric devices for biomedical applications,” Fundamental Biomaterials: Ceramics pp 47–62, 2018, doi: 10.1016/B978-0-08102203-0.00002-0 W Wu, X Wen, and Z L Wang, “Taxel-Addressable Matrix of VerticalNanowire Piezotronic Transistors for Active and Adaptive Tactile Imaging,” Science (80- )., vol 340, no 6135, pp 952–957, May 2013, doi: 57 [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] 10.1126/science.1234855 Y Zhang, M Xie, V Adamaki, H Khanbareh, and C R Bowen, “Control of electro-chemical processes using energy harvesting materials and devices,” Chemical Society Reviews, vol 46, no 24 pp 7757–7786, 2017, doi: 10.1039/c7cs00387k Z Fei et al., “Ferroelectric switching of a two-dimensional metal,” Nature, vol 560, no 7718, pp 336–339, Aug 2018, doi: 10.1038/s41586-0180336-3 W Li and L.-J Ji, “Perovskite ferroelectrics go metal free,” Science (80- )., vol 361, no 6398, pp 132–132, Jul 2018, doi: 10.1126/science.aat5729 B Chandra Sekhar et al., “Piezoelectricity and Its Applications,” in Multifunctional Ferroelectric Materials, IntechOpen, 2021 A Lignie et al., “High-temperature elastic moduli of flux-grown α-GeO2 single crystal,” ChemPhysChem, vol 15, no pp 118–125, 2014, doi: 10.1002/cphc.201300793 M Uemoto, Y Kuwabara, S A Sato, and K Yabana, “Nonlinear polarization evolution using time-dependent density functional theory,” J Chem Phys., vol 150, no 9, 2019, doi: 10.1063/1.5068711 X Huang, Q Bai, Q Zhou, and J Hu, “The Resistance–Amplitude– Frequency Effect of In–Liquid Quartz Crystal Microbalance,” Sensors, vol 17, no 7, p 1476, Jun 2017, doi: 10.3390/s17071476 T Starecki and P Z Wieczorek, “A high sensitivity preamplifier for quartz tuning forks in qepas (Quartz enhanced photoacoustic spectroscopy) applications,” Sensors (Switzerland), vol 17, no 11 2017, doi: 10.3390/s17112528 Stanford Research Systems, “Operation and Service Manual QCM200 Quartz Crystal Microbalance Digital Controller QCM25 MHz Crystal Oscillator.” pp 1–114, 2018, [Online] Available: https://www.thinksrs.com/products/qcm200.html D Mlambo, “Detection of quercetin using polymer coated quartz crystal microbalance and the modification of α-zirconium phosphate to develop a sorbent for organic pollutant removal,” 2010 M V Nikolic, V Milovanovic, Z Z Vasiljevic, and Z Stamenkovic, “Semiconductor Gas Sensors: Materials, Technology, Design, and Application,” Sensors, vol 20, no 22, p 6694, Nov 2020, doi: 10.3390/s20226694 F Fauzi, A Rianjanu, I Santoso, and K Triyana, “Gas and humidity sensing with quartz crystal microbalance (QCM) coated with graphenebased materials – A mini review,” Sensors Actuators A Phys., vol 330, p 112837, Oct 2021, doi: 10.1016/j.sna.2021.112837 G Sauerbrey, “Verwendung von Schwingquarzen zur W�gung d�nner Schichten und zur Mikrow�gung,” Zeitschrift f�r Phys., vol 155, no 2, pp 206–222, Apr 1959, doi: 10.1007/BF01337937 N D Hoang, V Van Cat, M H Nam, V N Phan, A T Le, and N Van 58 [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] Quy, “Enhanced SO2 sensing characteristics of multi-wall carbon nanotubes based mass-type sensor using two-step purification process,” Sensors Actuators A Phys., vol 295, pp 696–702, Aug 2019, doi: 10.1016/j.sna.2019.06.046 X Ma, G Xie, Y Su, H Du, T Xie, and Y Jiang, “Polyvinylpyrrolidone/graphene oxide thin films coated on quartz crystal microbalance electrode for NH3 detection at room temperature,” Sci China Technol Sci., vol 59, no 9, pp 1377–1382, Sep 2016, doi: 10.1007/s11431-016-0281-7 C Özbek, S Okur, Ö Mermer, M Kurt, S Sayın, and M Yılmaz, “Effect of Fe doping on the CO gas sensing of functional calixarene molecules measured with quartz crystal microbalance technique,” Sensors Actuators B Chem., vol 215, pp 464–470, Aug 2015, doi: 10.1016/j.snb.2015.04.004 S Jayawardena, H D Siriwardena, R M G Rajapakse, A Kubono, and M Shimomura, “Fabrication of a quartz crystal microbalance sensor based on graphene oxide/TiO2 composite for the detection of chemical vapors at room temperature,” Appl Surf Sci., vol 493, no April, pp 250–260, 2019, doi: 10.1016/j.apsusc.2019.06.280 W Jung, K Sahner, A Leung, and H L Tuller, “Acoustic wave-based NO2 sensor: Ink-jet printed active layer,” Sensors Actuators, B Chem., vol 141, no 2, pp 485–490, 2009, doi: 10.1016/j.snb.2009.07.010 M Osada, I Sasaki, M Nishioka, M Sadakata, and T Okubo, “Synthesis of a faujasite thin layer and its application for SO2 sensing at elevated temperatures,” Microporous and Mesoporous Materials, vol 23, no 5–6 pp 287–294, 1998, doi: 10.1016/S1387-1811(98)00125-5 H Wang, X Liu, J Xie, M Duan, and J Tang, “Effect of humidity on the CO gas sensing of ZnSn(OH)6 film via quartz crystal microbalance technique,” J Alloys Compd., vol 657, pp 691–696, Feb 2016, doi: 10.1016/j.jallcom.2015.10.149 D Zhang, D Wang, X Zong, G Dong, and Y Zhang, “High-performance QCM humidity sensor based on graphene oxide/tin oxide/polyaniline ternary nanocomposite prepared by in-situ oxidative polymerization method,” Sensors Actuators B Chem., vol 262, pp 531–541, Jun 2018, doi: 10.1016/j.snb.2018.02.012 P S Kumar, K G Pavithra, and M Naushad, “Characterization techniques for nanomaterials,” in Nanomaterials for Solar Cell Applications, Elsevier, 2019, pp 97–124 K Akhtar, S A Khan, S B Khan, and A M Asiri, “Scanning Electron Microscopy: Principle and Applications in Nanomaterials Characterization,” in Handbook of Materials Characterization, Cham: Springer International Publishing, 2018, pp 113–145 D B Williams and C B Carter, “The Transmission Electron Microscope,” in Transmission Electron Microscopy, Boston, MA: Springer US, 1996, pp 3–17 M A Mohamed, J Jaafar, A F Ismail, M H D Othman, and M A 59 [64] [65] [66] [67] [68] [69] [70] [71] [72] [73] [74] [75] Rahman, “Fourier Transform Infrared (FTIR) Spectroscopy,” in Membrane Characterization, Elsevier, 2017, pp 3–29 A Dutta, “Fourier Transform Infrared Spectroscopy,” in Spectroscopic Methods for Nanomaterials Characterization, Elsevier, 2017, pp 73–93 M Naderi, “Surface Area,” in Progress in Filtration and Separation, Elsevier, 2015, pp 585–608 E P Barrett, L G Joyner, and P P Halenda, “The Determination of Pore Volume and Area Distributions in Porous Substances I Computations from Nitrogen Isotherms,” J Am Chem Soc., vol 73, no 1, pp 373–380, Jan 1951, doi: 10.1021/ja01145a126 R I Setiyani, Utari, and B Purnama, “Effect of annealing temperature on XRD and FTIR analysis on CoAl0.1Fe1.9O4 nanoparticles by coprecipitation,” 2020, p 020051, doi: 10.1063/5.0030381 C Wang, A Li, and C Shuang, “The effect on ozone catalytic performance of prepared-FeOOH by different precursors,” J Environ Manage., vol 228, pp 158–164, Dec 2018, doi: 10.1016/j.jenvman.2018.08.103 C Liang, H Liu, J Zhou, X Peng, and H Zhang, “One-step synthesis of spherical γ -Fenanopowders and the evaluation of their photocatalytic activity for orange i degradation,” Journal of Chemistry, vol 2015 2015, doi: 10.1155/2015/791829 D Mandal and K Mandal, “Tuning of structural, magnetic and dielectric properties of TFe2O4 (T = Mn, Fe, Co, Ni, Cu, and Zn) Nano-Hollow Spheres: Effect of cation substitution,” Journal of Alloys and Compounds, vol 851 2021, doi: 10.1016/j.jallcom.2020.156898 P Laokul, V Amornkitbamrung, S Seraphin, and S Maensiri, “Characterization and magnetic properties of nanocrystalline CuFe 2O4, NiFe2O4, ZnFe2O powders prepared by the Aloe vera extract solution,” Current Applied Physics, vol 11, no pp 101–108, 2011, doi: 10.1016/j.cap.2010.06.027 N T Vinh et al., “Dual-functional sensing properties of ZnFe2O4 nanoparticles for detection of the chloramphenicol antibiotic and sulphur dioxide gas,” Sensors Actuators A Phys., vol 332, p 113093, Dec 2021, doi: 10.1016/j.sna.2021.113093 S Zhang et al., “Highly-sensitivity acetone sensors based on spinel-type oxide (NiFe2O4) through optimization of porous structure,” Sensors Actuators B Chem., vol 291, pp 266–274, Jul 2019, doi: 10.1016/j.snb.2019.04.090 P Annie Vinosha, B Xavier, A Ashwini, L Ansel Mely, and S Jerome Das, “Tailoring the photo-Fenton activity of nickel ferrite nanoparticles synthesized by low-temperature coprecipitation technique,” Optik (Stuttg)., vol 137, pp 244–253, 2017, doi: 10.1016/j.ijleo.2017.02.089 N Thanh Vinh et al., “Effect of ferric ion [Fe3+] and [Fe2+] on SO2 adsorption ability of γ-Fe2O3 nanoparticles for mass-type gas sensors,” Sensors Actuators A Phys., vol 331, p 112981, Nov 2021, doi: 10.1016/j.sna.2021.112981 60 [76] M Matsuguchi, K Tamai, and Y Sakai, “SO2 gas sensors using polymers with different amino groups,” Sensors and Actuators, B: Chemical, vol 77, no 1–2 pp 363–367, 2001, doi: 10.1016/S0925-4005(01)00735-3 [77] N Thanh, L Anh, L Khanh, and N Van Quy, “Materials Science in Semiconductor Processing Synthesis , characterization , and gas sensing properties of Fe O / FeOOH nanocomposites for a mass-type gas sensor,” Materials Science in Semiconductor Processing, vol 118, no April p 105211, 2020, [Online] Available: https://doi.org/10.1016/j.mssp.2020.105211 [78] T V Nguyen et al., “Effect of the phase composition of iron oxide nanorods on SO2 gas sensing performance,” Mater Res Bull., vol 134, p 111087, Feb 2021, doi: 10.1016/j.materresbull.2020.111087 [79] X Hu, Y Gui, Y Liu, L Xu, L Ran, and X Chen, “Adsorption characteristics of H2S, SO2, SO2F2, SOF2, and N2 on NiO –MoSe2 monolayer for gas-sensing applications,” Vacuum, vol 193 2021, doi: 10.1016/j.vacuum.2021.110506 61 LIST OF PUBLICATION Cao Xuân Trường, Nguyễn Thành Vinh, Trần Văn Đáng, Bùi Thị Hằng, Lương Ngọc Anh, Nguyễn Văn Quy*, “Tổng hợp hạt nano ZnCo2 O4 khảo sát tính nhạy khí NH3 vi cân tinh thể thạch anh (QCM)” Hội nghị Vật lý Chất rắn Khoa học Vật liệu Toàn quốc lần thứ 12 (SPMS 2021) Vinh Nguyen Thanh, Tran Quoc Tuan, Nguyen Van Cuong, Cao Xuan Truong, and Nguyen Van Quy, “Application of an artificial neural network and QCM sensor coated with γ-Fe2O3 nanoparticles for estimation of SO2 gas sensing characteristics,” J Sci Transp Technol., vol 2, no 1, pp 22–31, Mar 2022, doi: 10.58845/jstt.utt.2022.en59 62