Báo cáo hóa học: " Synthesis and Characterization of Magnetic Metal-encapsulated Multi-walled Carbon Nanobeads" doc

... novel, cost-effective, easy and single-step process for the synthesis of large quantities of magnetic metal-encapsulated multi-walled carbon nanobeads (MWNB) and multi-walled carbon nanotubes (MWNT) using ... (2005) Nanoscale Res Lett (2008) 3:76–81 81 123 NANO EXPRESS Synthesis and Characterization of Magnetic Metal-encapsulated Multi-walled Carbon Nanob...

Ngày tải lên: 21/06/2014, 22:20

... concentration and high optical transmit- tance in the visible region of the solar spectrum. By alloying with CdO, which has a cubic structure and a narrower direct band gap of 2.2–2.5 eV, the band gap of ZnO ... is similar like ZnO NW sample and showed Raman peaks only from ZnO and do not show any CdO-related Raman peak. The assignment of Raman mode of CdO is very difficult...

Ngày tải lên: 22/06/2014, 00:20

... results and wrote the paper. JS, HP, JWK, and KK participated in the characterization of samples and carried out experiments. VM contributed to the technical discussions. All the authors have read and ... basis of a trigonal structure of space group ¯ R3m with monoclinic C2/m phase as expected. The morphologies and electrochemical properties of the samples obtained were co...

Ngày tải lên: 20/06/2014, 23:20

... maximum of BeO is of lower energy than that of ZnO, while the conduction band minimum of BeO is of higher energy than that of ZnO [32]. In such case, a potential well for both electron and hole ... nature of BeO shell, which is composed of many island-shape grains with random orientations to the ZnO core. Accordingly, a rather rough edge of the BeO shell is observed. Magni...

Ngày tải lên: 21/06/2014, 00:20

... derivative of both curves of the hysteresis loops (heating and cooling) and considering the mean value. Results and discussion Structural characterization The crystal structure of the three sets of films ... toward the conduction band. Since intrinsic VO 2 thin film is of n-type, introduction of ion donors c ause an inevitable degradation of the transmittance (and resis...

Ngày tải lên: 21/06/2014, 04:20

... basis of a trigonal structure of space group ¯ R3m with monoclinic C2/m phase as expected. The morphologies and electrochemical properties of the samples obtained were compared as the value of x and ... results and wrote the paper. JS, HP, JWK, and KK participated in the characterization of samples and carried out experiments. VM contributed to the technical discussions....

Ngày tải lên: 21/06/2014, 17:20

... Chemistry and physics in one dimension: synthesis and properties of nanowires and nanotubes. Acc Chem Re 1999, 32:435-445. (a) (b) Figure 1 Abstract We report a successful synthesis of copper ... stabilization. An in-depth study is required, and further experiments are underway to understand and investigate the exact mechanism and the role of TG in the synthesi...

Ngày tải lên: 21/06/2014, 17:20

... Shi Department of Physics, School of Sciences, China University of Mining and Technology, 221008 Xuzhou, People’s Republic of China e-mail: yifeng@semi.ac.cn C. Xue Institute of Semiconductors, College of ... of newly developed methods, which has many advantages on synthesis of GaN nanowires such as sim- plicity for deposition of multicomponent, effective charge of spu...

Ngày tải lên: 22/06/2014, 00:20

... study, the band gap energy of the allowed direct transitions at 3.3 eV of SnS 2 nanowires with 40 nm diameter is agreeable to those obtained of Panda et al. Our band gap energy (3.3 eV) of SnS 2 nanowires ... between those sub-bands. Those bands of SnS 2 nanocrystallites may be associated with the presence of defect either interface or interior. Our band gap energies (4.4 and 5....

Ngày tải lên: 22/06/2014, 00:20

... use of polar solvent and another hydrophilic monomer would be helpful to increase the rate of polymerization and stability of emulsion [18]. However, the details in nucleation and growth of hybrid ZrO 2 nanocomposites, ... the strong characteristic signals of carbon and oxygen, as well as a weak signal of zirconium. The binding energies of 182.9, 284, and 532 eV coul...

Ngày tải lên: 22/06/2014, 01:20