experimental results preparation of supported tio2 nanoparticle arrays

... http://www.nanoscalereslett.com/content/9/1/190 Page of Figure FE-SEM images of TiO2 films over Ti plates (A, B) TiO2- 1, (C, D) TiO2- 2, and (E, F) NP -TiO2 (the inset in (F) shows the digital picture of the NP -TiO2 film) 100 nm ... spectra of various films (B) anatase TiO2 However, the absorption is relatively low, indicating that only few of TiO2 nanoparticles deposit over the surface of TiO2- 2 film The strong optical absorption ... appearance of NP -TiO2 film is red color (as inset in Figure 1F), which is different from the normal appearance of most anodic TiO2 nanorod or nanotube films [22] The pores are in the sizes of 50 to...

Ngày tải lên: 06/05/2014, 08:55

... started to explore the use of ordinal TiO2 in DSSCs; this includes TiO2 nanowires, nanorods, and TiO2 nanotubes [TNTs] The preparation of TNTs by a hydrothermal treatment of TiO2 powder in a 10-M ... DSSC can be further improved Experimental details Preparation of TiO2 nanoparticles and nanotubes The TiO2 main layer was prepared using the sol-gel method Nano -TiO2 was synthesized using titanium(IV) ... (b) FE-SEM images of the TiO2 nanoparticle/ TNT composite layer Figure Absorption spectra of dye from TiO2 films containing different ratios of TNTs Figure IPCE action spectra of solar cells IPCE...

Ngày tải lên: 21/06/2014, 17:20

... 550 °C, the performance of the electrode degrades due to the decreasing of the specific surface area of TiO2 nanotubes which results from the structural damage and collapse of the nanotubes (not ... potentials and low viscosity of the aqueous HF/H3PO4 electrolyte However, this phenomenon does not appear in the FESEM images of TiO2 nanotube arrays via anodization of titanium films deposited ... voltage of 30 V At the initial stage of anodization (Fig.4(a, b)), the surface of nanotubes is almost covered with a porous oxide layer After anodization for h, the pore diameter of TiO2 nanotubes...

Ngày tải lên: 02/09/2015, 13:33

... constituting of a majority of TiO2 and a small amount of SnO2 located on the TiO2 grain surfaces, which decreased potential barriers, made photocurrent appear in the system under irradiation of UV light ... characteristic of SnO2 /TiO2: SnO2 /SnO2 system The dark resistance (RD) and the light resistance (RL) under the irradiation of 7W Hg lamp at the distance of 10cm were measured The calculated ratio of RD/RL ... structure The evaporation of solvents and volatile products, took place simultaneously with the deposition process, caused the porosity of the TiO2 films Prepareation of TiO2/ SnO2: After the material...

Ngày tải lên: 13/02/2014, 04:20

... distribution of TiO2 nanorods grown on PT-substrate at an annealing temperature of 700 8C and at a hydrothermal growth temperature of 160 8C and with growth time of h Fig SEM image of TiO2 nanorod arrays ... the diffraction peaks of TiO2 appear and can be indexed as the rutile phase (JCPDS No 04-0551) and the anatase phase (JCPDS No 01-0562) of TiO2, suggesting that most of TiO2 nanoparticles transform ... The TiO2 nanoparticles have a diameter of approximately 11 nm, and the specific surface area is about 40.74 m2/g In the contrast experiments, the mass of TiO2 nanoparticles and three kinds of TNAs...

Ngày tải lên: 19/03/2014, 16:48

... purification process of CNTs Fig shows TEM image of CNTs– TiO2 composites in which the black materials of different size absorbed onto (a) (×20k) (b) (×50k) Fig TEM image of as produced TiO2 – CNTs composites ... However, the high specific surface area of CNTs was also the basis for formation of the composites Though the density of TiO2 is larger than that of CNTs, the TiO2 – CNTs composites could form a ... addition of TiO2 was supposed to increase the space among CNTs and improve the dispersion of CNTs in matrix In addition to that, due to the semiconducting properties of TiO2, the CNTs TiO2 composites...

Ngày tải lên: 20/03/2014, 13:06

... and a decreases with the increase of the resistance The time dependence of the resistance can be expressed by the formula as Fig Scheme of the fabrication of TiO2 nanowire DR ¼ rs d  L L À rs ... characteristic of TiO2 nanowire to hydrogen is investigated, as shown in Fig The TiO2 nanowire is linearly sensitive to hydrogen at low temperature Our results indicate that AFM fabricated TiO2 nanowire ... sensitive characteristic of TiO2 nanowire to hydrogen gas the resistance feedback, the width of AFM fabricated nanowire can be precisely controlled The semiconductor TiO2 nanowire displays high...

Ngày tải lên: 20/03/2014, 13:06

... drift-gillnet fisheries in the offshore waters of Central Vietnam The experimental model of fishing ground forecast for purse-seine and drift-gillnet fisheries in the off-shore waters of Central Vietnam ... for the grid of 0.5 degree By regression equations (2), some of the experimental results on fishing ground forecast for purse-seine and drift-gillnet fisheries in the off-shore waters of Central ... sustainable development of fish resources) Results With the objective to establish scientific basis for application of model on fishing ground forecast in the offshore waters of Central Vietnam,...

Ngày tải lên: 22/03/2014, 12:20

... characteristics of TiO2 film with different amounts of TN Figure Photocurrent-voltage characteristics of TiO2 film with different amounts of ATN Figure Photocurrent density and η of pure TiO2 films ... synthesis of the wide bandgap of TiO2, the small particle size of 10 to approximately 20 nm, the wide surface area of TiO2, and the porosity As stated above, these can increase the adsorption of dye, ... nm TiO2 nanoparticles and thin film porosity TN and ATN nanofibers can be observed at the surface of the film, so the nanofiber-added TiO2 film has an advantage to having higher adsorption of...

Ngày tải lên: 20/06/2014, 20:20

... regardless of the composition of the template, where the amount of deposited Au atoms is constant but the shape of the GNSs is different Conclusion We have demonstrated the preparation of TiO2 nanocrystal-containing ... formation of 1-D GNSs because the growth of Au occurs in the tubular mesopores Thermally excited electrons of TiO accelerate the reduction rate of the Au ions; thus, a large content of TiO2 in ... and rutile TiO2, as well as amorphous SiO2 (Figure 1A) The peaks of the TiO2 crystals appeared stronger in the pattern of the 50SiO2·5 0TiO2 template [50Ti] in comparison with those of 20Ti A TEM...

Ngày tải lên: 20/06/2014, 21:20

... images of the top view and cross-section of its typical tubes, respectively; (b) TEM image of the individual TiO2 nanotube, insets are its HRTEM and SAED images of the marked areas, respectively of ... probable cause of crystal nucleus formed And then the nucleus gradually grew up and became increasing TiO2 nanorods along the backbones of the TiO2 tubes, along with a small quantity of free-grown ... the work CC and XL participated in the preparation of the samples JJ and RM participated in the revision of the manuscript and the statistical analysis of experimental data Hu et al Nanoscale...

Ngày tải lên: 21/06/2014, 06:20

... content of the rutile phase Figure presents the TEM and SAED results of the TiO2 nanostructures The morphologies of TiO2 samples changed dramatically with changing the concentrations of the HCl ... content of anatase decreased and the content of rutile increased in the range of 1–5 M HCl solutions A maximum of content of rutile can be obtained in the M HCl solutions Then the content of anatase ... 1831 Fig TEM images of HexncTiO2/CTAB Nanoskeleton a Top view b side view Fig Low-angle (a) and wideangle (b) XRD pattern of HexncTiO2/CTAB Nanoskeleton pattern of Hex-ncTiO2/CTAB nanoskeleton...

Ngày tải lên: 21/06/2014, 08:20

... of anodic TiO2 nanotube arrays formation Acknowledgements Project supported by the National Natural Science Foundation of China (50872001), the Higher Educational Natural Science Foundation of ... the Open Foundation of Anhui Key Laboratory of Information Materials and Devices, China Figure a Current–time curve of sample 4; b TEM image of sample (inset showing the bottom of a tube), and c ... present a layered growth model of TiO2 nanotube arrays, in which the key processes can be described as follows (1) The first oxide layer is formed in the initial stage of anodization, and the reaction...

Ngày tải lên: 21/06/2014, 11:20

... using the same preparation technique The differences between the results of Au and Fe–Pt nanoparticle colloids by this method are discussed in this article Experimental The employed experimental ... by the repulsive force of nanoparticle charges but by the steric hinderance of dispersing agent of PVP PVP concentrations less than two times concentrations of the sum of Fe and Pt complex ones ... mJ, 50 Hz) for 30 From the appearance of peaks attributed to iron and platinum elements on several points of the nanoparticles, alloying of Fe–Pt alloy in the nanoparticles can be confirmed Except...

Ngày tải lên: 22/06/2014, 00:20

... successful coupling of the RGD to the surface of the liposomes Assay of particle sizes and morphological observation of RGD-M-LCL The average size of liposomes processed by the microfluidizer was ... of RGD-M-LCL and measurement of its particle size RGD-M-LCL was freeze-dried by a cryoprotectant of sugar in a sugar-lipid quality ratio of 2.0 (22), then was redissolved with DMEM The size of ... induction of apoptosis in cancer cells compared to free matrine, supporting the further development of this novel delivery system for cancer therapy Materials and Methods Preparation of RGD-modified...

Ngày tải lên: 26/10/2012, 08:57

... calculate for yourself some of the amounts of needed reagents After you have calculated them, confirm your results with the instructor before proceeding Dissolve 0.010 mole of sulfanilic acid (anhydride) ... excess of a reagent that could decompose or cause decomposition and produce tar to contaminate our dye, you need to weigh the quantities of solid reagent very carefully to the accuracy of 0.05 ... Dissolve 0.010 mole of sulfanilic acid (anhydride) in about 50 ml of a solution of sodium carbonate containing 0.010 to 0.0125 moles of sodium carbonate in a 125 ml Erlenmeyer flask The solution...

Ngày tải lên: 12/12/2013, 21:16

... is ning of the first interval This case is presented in Fig 15(b) VI EXPERIMENTAL RESULTS In this section, some experimental results are presented These results are recorded on the real experimental ... which are related to a previously presented model of the conveying drive, results the final form of dynamical equations of the VCS Fig 10 Influences of the conveying mass change to amplitude oscillation ... records of resonant frequency seeking process is described in this paper Simulation and experimental results refer to the case of SCR and switching drive It can be concluded, in scope of simulation...

Ngày tải lên: 03/01/2014, 19:16

... has been prepared by Institute of Energy Institute of Energy Main Contents of RE Master Plan and Some Preliminary results 2.1 Organization of RE MP Present status of RE development 1.1 Existing ... 10 million tons of oil) Types of biomass can be exploited at the industrial scale: rice husks; leaves, top of sugar canes & baggage; coffee husks and wood residues Institute of Energy Biogas ... Contents of Presentation Introduction Main Contents of RE Master Plan and Some Preliminary results Experience Institute of Energy Introduction VN is relatively...

Ngày tải lên: 24/01/2014, 03:20

... top of the milk and form a layer of cream Buffalo milk also forms some cream on top, but other kinds of milk, such as that of sheep and goats, hardly form a layer of fat at all For these types of ... making cheese The quality of milk used to make cheese Coagulation of the milk Separating curd and whey The use of cheese whey Collection and preservation of the curd Maturation of the cheese Cheese ... 5.5 Starter cultures The development of lactic acid bacteria Cultivation of starter cultures of lactic acid bacteria Growth of starter cultures Maintenance of starter cultures Preparing your own...

Ngày tải lên: 08/03/2014, 22:20