Báo cáo hóa học: " Ultra-fast Microwave Synthesis of ZnO Nanowires and their Dynamic Response Toward Hydrogen Gas" docx

... Nanoscale Res Lett (2009) 4:948–954 123 NANO PERSPECTIVES Ultra-fast Microwave Synthesis of ZnO Nanowires and their Dynamic Response Toward Hydrogen Gas Ahsanulhaq Qurashi Æ N. Tabet Æ M. Faiz Æ Toshinari ... direction and the ZnO [0001] has the highest energy of the low-index surface which results in the formation of 1D ZnO nanowires. Gas Sensing Performan...

Ngày tải lên: 22/06/2014, 00:20

... dependence of nanorod absorption and scattering on their aspect ratio, size, and medium refractive index using DDA simulation method. This article focuses on the synthesis of silver nano- structures of ... *420, and *330 nm. The band at *330 nm is attributed to the out -of- plane quad- rupole resonance. The band at *800 and *420 nm are due to in-plane dipole resonance (longi...

Ngày tải lên: 21/06/2014, 17:20

... reports of the responsiveness to change of the PPME were identified. Acceptability and feasibility MacKnight et al. [41] reported the acceptability and feasi- bility of the PPME in a sample of 19 ... measurement error and MCID for the EMS, HABAM and PPME scores. The limit of agreement is a more conservative estimate of measure- ment error than the MDC 90 . The MDC 90 and...

Ngày tải lên: 18/06/2014, 22:20

... high-yield synthesis of 2-dimensional cupric oxide (CuO) nanodiscs through dehydrogenation of 1-dimensional Cu(OH) 2 nanowires at 60°C. Most of the nanodiscs had a diameter of approximately 500 nm and ... low-temperature synthesis of phase-pure 2-D CuO-interlaced nanodiscs was demon- strated using simple dehydrogenation of 1-D Cu(OH) 2 nanowires at 60°C in solution. The...

Ngày tải lên: 21/06/2014, 03:20

... author and conceived of the study, carried out the conception and design, synthesis and experiments, characterization, acquisition of data, analysis and interpretation of data, and drafting of the ... between 20 and 22°C and a pressure of 1 atm. The pH of the solution varies as a function of HAuCl 4 concentration. Nernst equation describes potential of electroc...

Ngày tải lên: 21/06/2014, 03:20

... G-band and D- band of MWCNT clearly change with PPy coating, demonstrating the interfacial interactions between the MWCNT and PPy [31]. Interestingly, polaron mode shifted from in 1,048 cm -1 of ... surface of MWCNT core. The MWCNT diameter and PPy thickness are estimated to be around 31.7 nm and 6 nm, respectively. When the ratios of PPy/MWCNT were changed to 4:6 and 5:5, t...

Ngày tải lên: 21/06/2014, 03:20

... semiconductor ZnO is also investigated, since the band gap and the energetic position of the valence band maximum and conductio n band minimum of ZnO are very close to that of TiO 2 [8]. Most of these ... contamination of the fed gas and high-energy bombardment of the film surface. Thermal evaporation in a high-vacuum atmosphere seems to be better as a preparation techni...

Ngày tải lên: 21/06/2014, 04:20

... squared frequency response a: Critical band 1 b: Critical band 2 c: Critical band 3 d: Critical band 4 e: Critical band 5 f: Critical band 6 g: Critical band 7 h: Critical band 8 a b c d e f g h (a) 0 0.1 ... critical band structure: (a) critical bandwidth as a function of center frequency, (b) critical band rate as a function of center frequency. the index of sets having same bandwid...

Ngày tải lên: 21/06/2014, 05:20

... C 2 H 2 and NH 3 feed- stocks in a dc PECVD reactor. The partial dissociation of C 2 H 2 and NH 3 led to the formation of H 2 , HCN, H 2 O and N 2 species. The presence of excited neutral and ionized species ... temperature synthesis of VA-CNTs. Large-scale Monte Carlo simulations [37] of SWNT synthesis showed that PECVD methods were more suitable for low temperature sy...

Ngày tải lên: 21/06/2014, 07:20

... ALD of ZnO. Inset: Raman spectrum in the range of 150–650 cm -1 of ZnO- coated CNTs Fig. 1 a TEM image of PECVD-grown CNTs. b TEM image of ALD ZnO- coated CNTs. c and d SEM images of ALD ZnO- coated ... sp 2 -hybridized carbon and a D band at *1346 cm -1 originating from disordered carbon [17, 18]. In addition to the D band, the D 0 band as a shoulder of the Fig. 2 Rama...

Ngày tải lên: 21/06/2014, 08:20