characterization and optical property of zno nano-,

... of ZnO powder with hexagonal (wurtzite-type) crystal structure and the formation of well-dispersed ZnO nano-, submicro- and microrods with diameters of about 50, 200 and 500 nm, and lengths of ... Characterization and optical property of ZnO nano-, submicro- and microrods synthesized by hydrothermal method on a large-scale Narges Kiomarsipour ⇑ , Reza Sho...

Ngày tải lên: 06/05/2014, 13:22

... In(III) ZnO- In(OH) 3 5 at. % In(III) ZnO d (100) ZnO d (201) ZnO d (112) ZnO d (200) ZnO d (103) ZnO d (110) ZnO d (102) ZnO d (101) ZnO d (002) ZnO d (202) ZnO d (004) 200 cps In(OH) 3 d (200) In(OH) 3 d (220) In(OH) 3 d (420) In(OH) 3 d (400) Fig. ... concentration of indium ions owing to the forma- tion of rising amount of In(OH) 3 nanoparticles (Table 4). 3...

Ngày tải lên: 06/05/2014, 13:24

... effects of size and shape of Si-nc on the incorporation of group-III (B and Al), group-IV (C and Ge) and group-V (N and P) impurities. Single-doping has been investigated both in spherical and faceted-like ... found that the band-gap of the codoped Si-nc is reduced with respect to the gap of the pure ones showing the possibility of an impurity-based engineering of th...

Ngày tải lên: 16/03/2014, 15:15

... substrate. The structure and photo- luminescence (PL) property of the as-deposited material has been investigated and the growth of SiO 2 nanowires is discussed on the basis of tiny SiO 2 cluster ... the metal particles, (ii) formation of liquid droplet of metal and Si/SiO x and (iii) the precipitation in the form of solid nanowires after super-saturation of liquid met...

Ngày tải lên: 16/03/2014, 15:18

... results [5] show that the elasticity and strength of SiC nanowires are considerably greater than those of SiC whiskers and bulk SiC. A variety of methods on the synthesis of SiC nanowires have been developed, ... ratio of Si/C/O of the nanowires is about 3:2:2, which corresponds well to the standard SiC and SiO 2 . The small quantity of oxygen may come from the resident ox...

Ngày tải lên: 16/03/2014, 15:21

... Synthesis and Optical Properties of Colloidal Tungsten Oxide Nanorods Kwangyeol Lee, Won Seok Seo, and Joon T. Park* National Research Laboratory, Department of Chemistry and School of Molecular ... preparation of soluble and highly crystalline tungsten oxide nanorods of varying sizes by a mild, solution-based colloidal approach. A stirred slurry of 0.70 g of W(CO) 6 (...

Ngày tải lên: 20/03/2014, 13:08

... and thicknesses of 50 nm. In Fig. 2(c) and (d), FE-SEM images of the submicrorods ZnO is shown. The diameters of ZnO rods are about 100 nm and their ... of nanorod and microrod ZnO pigments are lower than the others. Because of the particle sizes of nanorod and microrod ZnO pig- ments are smalle...

Ngày tải lên: 06/05/2014, 13:23

... well-crystallized particles of prepared ZnO. Fig. 1bshowstheUV–visible optical absorption characteristics of the sea urchin-like ZnO. Excitonic absorption peak of the ZnO sample is at about 360 ... low efficiency of power conversion of DSSCs and limits their industry application. Recently, many efforts have focused on the prepara- tion of 3D ZnO nanostructures to improve...

Ngày tải lên: 06/05/2014, 13:23

... 8179–8190 ARTICLE pubs.acs.org/JACS Spectroscopic and Microscopic Investigation of Gold Nanoparticle Formation: Ligand and Temperature Effects on Rate and Particle Size Rajesh Sardar † and Jennifer S. Shumaker-Parry* Department of Chemistry, ... ex- change reactions, and migration of thiolated ligands would lead to less particle organization. Correlation of Particle Size an...

Ngày tải lên: 18/09/2013, 21:27

... expressed, and purified in Escherichia coli system. The enzymatic characterization of HpSDH demonstrates its activity with k cat of 7.7 s )1 and K m of 0.148 mm toward shikimate, k cat of 7.1 s )1 and ... catalytic proper- ties of HpSDH and the effects of pH and temperature on HpSDH. The results show that HpSDH has a k cat of 7.7 ± 0.9 s )1 , K m of 0.148 ± 0.028 mm...

Ngày tải lên: 19/02/2014, 05:20