Báo cáo hóa học: " Microwave-Assisted Synthesis of Titania Nanocubes, Nanospheres and Nanorods for Photocatalytic Dye Degradation" pptx

... maximum of methylene blue at 661 nm at 30 min intervals of reaction. Nanoscale Res Lett (2009) 4:144–152 145 123 NANO EXPRESS Microwave-Assisted Synthesis of Titania Nanocubes, Nanospheres and Nanorods ... eV (αhν) 2 x10 -36 Bandgap (Eg) (eV) Fig. 8 A plot of (aht) 2 versus photon energy (ht) of the synthesized nanotitania Table 2 Summary of band gap and absorption...

Ngày tải lên: 22/06/2014, 01:20

... an importantroleintheformationofuniformbismuth nanospheres. Bismuth nanoparticles and nanotubes were formed w hen DMF w as used as a solvent instead of EG. The possible formation mechanism of the bis- muth ... the protection of ni trogen. The use of protection of inactive gas and organic metal precursor, however, made it com- plicated and costly. Hence, a simple, low-cost app...

Ngày tải lên: 21/06/2014, 06:20

... find that CdO and Cd(OH) 2 can be selectively obtained Fig. 4 Schematic of the formation of nanowire bundles Fig. 5 PL spectra of bundles of nanowires collected after a 10 h and b 24 h of hydrothermal ... images of the as-fabricated CdO wires at a low and b high magnifications; c TEM image of a bundle of CdO nanowires; d HRTEM image of nanowires that make up the bundle;...

Ngày tải lên: 21/06/2014, 18:20

... Views used for training and registr ation. 13 representative quasiviews are selected and used for training, and hence for registration. The number of used features (especially, the features for subregions) ... take a systematic extension to build 3D information us- ing multiviews and perform optimization of the descriptor in respect of the number and the choice of vi...

Ngày tải lên: 22/06/2014, 19:20

... gjfang@whu.edu.cn Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Department of Electronic Science and Technology, School of Physics and Technology, Wuhan University, ... electrical conductivity (s) and morphology of the AZO nanostructures can be readily controlled. The effect of s and morphology of the AZO nanostructures on the perf...

Ngày tải lên: 20/06/2014, 22:20

... FESEM and HRTEM images of the Li 4 Ti 5 O 12 powders prepared through the solid-state process. Small and uniformly sized Figure 4 Figure 2 1 Facile synthesis of nano-Li 4 Ti 5 O 12 for high-rate ... process, for up to 20 C. The cells were charged and discharged at 1 C for the first 10 cycles, and then, the rate was increased in stages to 20 C. At a rate of 20 C, t...

Ngày tải lên: 20/06/2014, 23:20

... synthesis of beta-MnO 2 nanorods and their rapid and efficient catalytic oxidation of methylene blue dye. Catal Commun 2006, 7:408-412. 22. Zhang WX, Wang H, Yang ZH, Wang F: Promotion of ... features of the birnessite-type MnO 2 compounds previously reported at 500 to 510, 575 to 585, and 625 to 650 cm −1 [40]. Three Raman bands for the birnessite-type MnO 2 and...

Ngày tải lên: 20/06/2014, 23:20

... resistors, dynamic random access memories, electromechanics, and nonlinear optics [2,3]. For the existence of the size effect of ferroelectricity and the potential application of bottom-up assembled ... as a means of blending, the solubility of barium hydroxide is not a limit during synthesis and thus the synthesis efficiency is improved distinctly. For exam- ple, a la...

Ngày tải lên: 21/06/2014, 01:20

... authors are grateful to Prof. C. N. R. Rao, Prof. A. K. Raychaudhary, Prof. A. K. Sood, Prof. P. M. Ajayan, and Prof. D. P. Singh (Vice-Chancellor B.H.U) for their encouragement and support. The authors ... amount of black soot-like materials in ethanol with sonication for 10 min. Drops of the disper- sion were placed onto a holey carbon grid and dried. Results and discussion...

Ngày tải lên: 21/06/2014, 06:20

... precipitated and washed with methanol and 1-butanol and re- dispersed in hexane. Synthesis of InP/ZnS For in situ fabrication of InP/ZnS core-shell NQDs, the temperature of the growth solution of InP ... molecular peak of compound 2 at m/z = 376, and the elemental analysis of 2 contained 57.25 wt.% C and 12.16 wt.% H, corresponding to a molecular formula of C 1...

Ngày tải lên: 21/06/2014, 17:20