sol gel synthesis of supported metals
Synthesis of supported bismuth molybdate catalyst and the application in selective oxidation of propylene to acrolein
... diffraction patterns of samples synthesized by sol- gel and hydrothermal methods Fig 3.15 FT-Raman spectra of samples synthesized by sol- gel and hydrothermal methods Figure 3.16 FE-SEM images of samples ... synthesized by sol- gel and hydrothermal methods Figure 3.17 Specific surface area (SBET) of samples prepared by solo -gel and hydrothermal methods Fig 3.18 Conversion of propylene (a) and rate of acrolein ... by sol- gel and hydrothermal methods Figure 3.19 XRD patterns of zirconia supported -Bi2Mo2O9 samples (a) and silica supported -Bi2Mo2O9 samples (b) Figure 3.20 FT-Raman diagrams of zirconia supported
Ngày tải lên: 17/02/2021, 19:11
A facile approach for the synthesis of porous hematite and magnetite nanoparticles through sol-gel self-combustion
... effect of simultaneous addition of ethylene glycol and agarose on the structural and magnetic properties of CoFe2O4 nanoparticles prepared by the sol- gel auto-combustion method Journal of Magnetism ... A, Karimabadi F et al.The possibility of vanadium substitution on Co lattice sites in CoFe2O4 synthesized by sol? ? ?gel autocombustion method Journal of Sol- Gel Science and Technology 2020; 20: 167: ... typical synthesis procedure is: ferric nitrate monohydrate was dissolved cos θfollowed by the addition of a specific amount of starch (Table 1) The components of the mixture were in 50 mL? ?of? ?water
Ngày tải lên: 13/01/2022, 00:30
Báo cáo khoa học: Spectroscopic characterization of the oxyferrous complex of prostacyclin synthase in solution and in trapped sol–gel matrix doc
... access channel, active site and heme structure of PGIS in solution are preserved in the sol? ? ?gel matrix. Peroxidase reactivity of PGIS in solution and sol? ? ?gel Similarly to other P450s, PGIS possesses ... 4. Progression of ferrous–CO complex formation in sol? ? ?gel. Ferric PGIS (solid line), a ferrous–CO complex of 20 min of incuba- tion (dotted line) and a ferrous–CO complex of 2.5 h of incubation (dashed ... Cayman (Ann Arbor, MI, USA). Preparation of sol? ? ?gel- encapsulated PGIS TMOS sol was prepared by the sonication of 1.5 mL of TMOS, 0.35 mL of water and 0.01 mL of 0.1 m HCl for 30 min [10]. TMOS-derived
Ngày tải lên: 23/03/2014, 07:20
A study of au batio3 composite films prepared by sol gel processing
... diffraction profile of Au (111) of as-deposited 10% Au-BT sample on glass substrate with 11.40 keV (λ = 1.088Å) of energy Figure 5.2 shows the X-ray powder diffraction profile of Au (111) of as-deposited ... resonance of Au dielectric composite thin film 1.1.4.1 Shift of plasmon resonance 11 1.1.5 16 Futures of Au-dielectric thin film 1.2 Au-BaTiO3 composite thin film 17 1.2.1 17 Sol- gel processing of Au-BaTiO3 ... diffraction profile of 1% Au-BaTiO3 film Figure 3.2b : The real-time X-ray powder diffraction profile of 1% Au-BaTiO3 film Figure 3.3 : The real-time X-ray powder diffraction profile of % Au-BaTiO3
Ngày tải lên: 26/09/2015, 10:05
Development of organic inorganic composites by sol gel method for tooling materials
... ACKNOWLEDGEMENT i TABLE OF CONTENTS iii SUMMARY vii LIST OF TABLES ix LIST OF FIGURES x LIST OF SYMBOLS xiv CHAPTER INTRODUCTION CHAPTER LITERATURE REVIEW 2.1 Sol Gel Synthesis 2.1.1 Sol Gel Chemistry ... materials produced by the sol gel method, J Sol- Gel Sci Technol., 20, pp.187-195 2001 Rabinovich, E M Particulate Silica Gels and Glasses from the Sol- Gel Process In Sol- Gel Technology for Thin ... and crack-free sol gel matrix system can be prepared by combined precursor of MTMS and DMDS The optimized molar ratio of DMDS/MTMS in the sol gel matrix is 0.175 The cracking of gels occurs when
Ngày tải lên: 04/10/2015, 15:57
Summary of the thesis: Study the fabrication and photocatalytic, hydrophilic properties of TiO2/SiO2 and TiO2/PEG thin films by sol-gel method
... models of solid surface under the presence of the stimulus The practical and theoretical significance of the thesis The technology of fabrication of nanostructured TiO2 material is controlled by sol- gel ... contributing to consolidate the hypothesis of the origin of the mechanism of super-hydrophilic effect of the TiO2 material system Layout of the thesis: The thesis consists of the introduction, ... properties of TiO2/SiO2 and TiO2/PEG thin films by sol- gel method Major: Solid State Physics Code: 44 01 04 SUMMARY OF THE THESIS Hà Nội – 2018 The thesis is completed at: Graduate University of Sciences
Ngày tải lên: 09/01/2020, 15:45
Summary of the thesis: Study the fabrication and photocatalytic, hydrophilic properties of TiO2/SiO2 and TiO2/PEG thin films by sol-gel method
... models of solid surface under the presence of the stimulus The practical and theoretical significance of the thesis The technology of fabrication of nanostructured TiO2 material is controlled by sol- gel ... contributing to consolidate the hypothesis of the origin of the mechanism of super-hydrophilic effect of the TiO2 material system Layout of the thesis: The thesis consists of the introduction, ... properties of TiO2/SiO2 and TiO2/PEG thin films by sol- gel method Major: Solid State Physics Code: 44 01 04 SUMMARY OF THE THESIS Hà Nội – 2018 The thesis is completed at: Graduate University of Sciences
Ngày tải lên: 15/01/2020, 08:31
Sunlight photocatalytic performa nce of Mg-dope d nickel ferrite synthesiz ed by a green sol-gel route
... reported the potential application of Euphorbia tirucalli phyto-mediated route for the synthesis of Eu3ỵ doped Gd2O3 NPs and A vera gel biomediated route for the synthesis of Eu doped Y2O3 nanostructures ... extracted solution can be prepared from a g section of A vera leaves which were carefully chopped to obtain the gel, then dissolved in 20 mL of de-ionized water and stirred for 30 till a clear solution ... this modified green sol- gel route, stoichiometric quantities of the nickel nitrate and the ferric nitrate were mixed with a M3ỵ/M2ỵ molar ratio of 2:1 and dissolved in 30 mL of the double distilled
Ngày tải lên: 24/09/2020, 04:42
Electrochromic properties of sol–gel prepared hybrid transition metal oxides – a short review
... pp 1e38 [16] J Livage, Sol- gel chemistry and electrochemical properties of vanadium oxide gels, Solid State Ion 86e88 (1996) 935e942 [17] S Sakka (Ed.), Handbook of Sol- Gel Science and Technology, ... fabrication of optical fibers for optical telecommunication, ceramic superconductors, protection of metals, etc A fascinating new field of research in materials science is the solegel fabrication of hybrid ... Journal of Science: Advanced Materials and Devices (2017) 286e300 Fig Possible end products of the solegel processes (Reproduced with permission from Ref [16]) Fig Applications of solegel method
Ngày tải lên: 17/03/2021, 20:14
Efficient multicomponent synthesis of 1,2,3-triazoles catalyzed by Cu(II) supported on PEI@Fe3O4 MNPs in a water/PEG300 system
... some of them suffer from disadvantages such as the necessity to apply azide derivatives instead of in situ formation of counterparts and the inability of the catalyst to catalyze the reaction of ... Department of Chemistry, University of Zanjan, Zanjan, Iran Zanjan Pharmaceutical Nanotechnology Research Center (ZPNRC), Zanjan University of Medical Sciences, Zanjan, Iran Department of Life Science ... Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran Department of Biology, Faculty of Science, Payame Noor University, Iran Pharmaceutical
Ngày tải lên: 13/01/2022, 00:21
Determination of characterization, antibacterial and drug release properties of POSSbased film synthesized with sol-gel technique
... on the properties of sol- gel silica films Optica Applicata 2005; 35 (1): 117-128 21 Brinker CJ, Frye GC, Hurd AJ, Ashley CS Fundamentals of sol- gel dip coating Thin Solid Films 1991; 201 (1): 97-108 ... of POSSbased film synthesized with sol- gel technique 1, 2 2 İdil KARACA AÇARI *, Süleyman KÖYTEPE , Burhan ATEŞ , İsmet YILMAZ , Turgay SEÇKİN Department of Bioengineering, Faculty of Engineering ... SEM images of the POSS-MET-GS coated glass surface EDX analysis was performed to determine the change of elemental title on the surface of the coatings and EDX spectrum of the GS (a), and POSS-MET-GS
Ngày tải lên: 13/01/2022, 00:27
Development of sol-gel silica-based mixed-mode zwitterionic sorbents for determining drugs in environmental water samples
... 2.2 Synthesis of sol- gel mixed-mode zwitterionic sorbents Sol solutions to create the sol- gel mixed-mode zwitterionic sorbents were obtained by sequential addition and subsequent vortexing of ... the sol solution under continuous stirring in a magnetic stirrer The solution slowly became viscous before turning into solid gel To produce activated carbon impregnated sol- gel sorbent, 0.5 g of ... carbon was added to the sol solution before ammonium hydroxide solution was added The solid gel was thermally conditioned and aged at 60 °C for 48 h The monolithic bed of the sol- gel network was then
Ngày tải lên: 20/12/2022, 21:29
Application of sol-gel methods to obtain silica materials decorated with ferrocenyl-ureidopyrimidine moieties. Preparation of hollow spheres and modification of a carbon electrode
... absence of CTAB in case of Sil5 and in the absence of TEOS in case of Sil6, resulting in the isolation of 114.4 mg (Sil5) and 5.9 mg (Sil6) solid material 2.4.5 Modification of a spectral graphite ... structure-directing agent Sol- gel electrodeposition is a special case of direct synthesis for creating thin silica films on the surface of an electrode The main point of this method is to apply ... Preparation of Sil1 A mixture of 0.1 mmol of 4, ml ethanol and mg NaOH was transferred to a Schlenk tube and 150 μl of distilled water was added It was stirred at a temperature of 50 ◦ C for h and the solid
Ngày tải lên: 20/12/2022, 22:01
Sol-gel derived silica: A review of polymer-tailored properties for energy and environmental applications
... metacrylate-co-butyl acrylate) core] polymer nanoparticle) (vinyltrimethoxysilane) Sol- gel synthesis Sol- gel synthesis methods are often used to produce high-SSA silica due to the ease with which chemical ... typically dis solved in an organic solvent, is mixed with an aqueous solution of a catalyst, hydrolysis and condensation reactions will occur to form the silica network of the gel General hydrolysis ... explored to mitigate the envi ronmental impacts of these technologies In both cases, sol- gel derived silica-based materials, such as aerogels and xerogels, have been receiving increasing attention
Ngày tải lên: 20/12/2022, 23:17
Luận văn high yield synthesis of multi walled carbon nanotubed from caco3 supported iron iii nitrate catalyst
... Mixture of CaCO3 and Fe(NO3)3.9H2O Ǥгiпdiпǥ 3.1 grams of CaCO3 + Fe(NO3)3.9H2O mixture containing 5% wt Fe z oc c ận Lu n vă ạc th ận v ăn o ca họ n uậ n vă d 23 8000ເ, П2/ Һ2 l Formation of Fe ... ເ2Һ2/Һ2/П2 f0г 30 miпuƚes CNTs growing over supported Fe nanoparticles Seρaгaƚi0п 0f ເПTs ьɣ usiпǥ 10% Һເl, filƚeг, disƚilled waƚeг 1.2 gram CNTs with purity of 97.9% Fiǥ 3.15: SເҺemaƚiເ ρг0ເeduгe
Ngày tải lên: 12/07/2023, 13:25
Immobilization of heavy metals in sediment dredged from a seaport by iron bearing materials
... by using one of the latest technologies – Biofast – a kind of machine for filtering liquid wastes. Biofast are outstanding because of its effectiveness and efficiency. Biofast operates ... possibility of occupational accidents and promote the transparency and effectiveness of the whole system. As Biofast uses solar energy for its operations, it reduces the expenses of energy. Biofast ... the research and testing of biological products. 1.1.2. Definition according to the Ministry of Public Health of Vietnam Medical wastes are material in form of solid, liquid or gases which
Ngày tải lên: 23/09/2012, 15:38
Tổng hợp perovskite la1 x cax mno3 cấp hạt nano bằng phương pháp sol gel, nghiên cứu cấu trúc và tính chất từ
... mà phụ thuộc nhiều vào phơng pháp tổng hợp Trong năm gần đây, phơng pháp sol- gel đợc ý nhiều u điểm bật Phơng pháp solgel cho phép tổng hợp đợc vật liệu oxit phức hợp siêu mịn, có tính đồng độ ... học vinh === === PHAN THị MINH HUYềN tổng hợp perovskite La1-xCaxMnO3 cấp hạt nano phơng pháp sol- gel, nghiên cứu cấu trúc tính chất từ Chuyên ngành: Hóa vô MÃ số: 60.44.25 luận văn thạc sĩ hóa ... học vinh === === PHAN THị MINH HUYềN tổng hợp perovskite La1-xCaxMnO3 cấp hạt nano phơng pháp sol- gel, nghiên cứu cấu trúc tính chất từ luận văn thạc sĩ hóa học vinh - 2006 giáo dục đào tạo Trờng
Ngày tải lên: 18/12/2013, 21:01
Tổng hợp perovskite la1 x srxmno3 cấp hạt nano bằng phương pháp sol gel, nghiên cứu cấu trúc và tính chất từ
... cấp hạt nano phơng pháp sol- gel nghiên cứu cấu trúc, từ tính chúng Các nhiệm vụ đặt đề tài: + Tổng hợp thành công perovskit La 1-xSrxMnO3 cấp hạt nano phơng pháp sol- gel + Nghiên cứu cấu trúc ... liệu nano nh phơng pháp đồng kết tủa phân huỷ nhiệt, phơng pháp sử dụng tiền chất, phơng pháp dsol -gel Các tính chất từ mở Do có u ®iĨm: Cho s¶n phÈm cã ®é tinh khiÕt cao, tÝnh ®ång nhÊt lín, nhiƯt ... khiển thông số vật liệu thông qua điều khiển yếu tố phản ứng Các tính chất từ mở nên ph ơng pháp sol- gel phơng pháp đợc sử dụng thành công tổng hợp vật liệu nano đặc biệt vật liệu từ Các hợp chất
Ngày tải lên: 19/12/2013, 11:14
Luận văn nghiên cứu tổng hợp perovskite la1 x caxmno3 cấp hạt nano trên nền sio2 bằng phương pháp SOL GEL, khảo sát tính chất từ của chúng
... nano SiO2 phơng pháp sol- gel, khảo sát tính chất tõ cđa chóng ” NhiƯm vơ chÝnh cđa ®Ị tài : - Tổng hợp mẫu vật liệu Perovskite La 1-xCaxMnO3 cấp hạt nano SiO2 phơng pháp sol- gel - Nghiên cứu cấu ... pháp đồng kết tủa Phơng pháp precursor-hợp chất Phơng pháp precursor- dung dịch rắn Phơng pháp sol- gel Phơng pháp nhiễu xạ tia X Bản ch¸t tia X Trang 4 9 10 11 11 12 16 16 17 18 18 19 22 23 1.4.2 ... pháp nhiễu xạ tia X Tính chất vật liệu phụ thuộc nhiều vào phơng pháp tổng hợp chúng Phơng pháp sol- gel xuất nhng tỏ u việt cả, cho phép tổng hợp vật liệu siêu mịn, có tính đồng độ tinh khiết hoá
Ngày tải lên: 20/12/2013, 17:57
Nghiên cứu chế tạo vật liệu ormosil phủ lên bề mặt thủy tinh bằng phương pháp sol gel
... phẩm từ phương pháp sol – gel bao gồm: Màng mỏng, gel khối, gel khí, hạt nano, sợi ceramic v.v… 1.2 SỬ DỤNG PHƯƠNG PHÁP SOL – GEL ĐỂ CHẾ TẠO LỚP PHỦ SILICA Về chất, chế tạo sol silica thực trình ... Sự phát triển cấu trúc tinh thể q trình gel hóa 1.1.5 Ưu điểm nhược điểm trình sol – gel - Ưu điểm - Nhược điểm 1.1.6 Một số ứng dụng phương pháp sol – gel Được sử dụng rộng rãi để chế tạo nghiên ... liệu tham khảo CHƯƠNG 1: TỔNG QUAN LÝ THUYẾT 1.1 TỔNG QUAN VỀ PHƯƠNG PHÁP SOL - GEL 1.1.1 Giới thiệu Phương pháp sol – gel kỹ thuật tổng hợp hóa keo để tạo vật liệu nhiệt độ không cao Nó hình
Ngày tải lên: 30/12/2013, 13:35