Báo cáo hóa học: " Facile template-free synthesis of pine needle-like Pd micro/nano-leaves and their associated electro-catalytic activities toward oxidation of formic acid" pot

... 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 deta...

Ngày tải lên: 21/06/2014, 03:20

... ratios of the MPA stabilizer to Figure 2 Optical performance of CdTe cores and corresponding CdTe/CdSe type II QDs by means of microwave-assisted synthesis. The optical performance of a series of ... treatment of the samples was done with three UV lamps, and the inten- sity of the illuminated light was 16 W. Results and discussion The typical band structure alignment of...

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

... 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 composite materials ... 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 technique from t...

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 bandwidth...

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

... room t empera- ture, and 19 mg of Se powder was added. Finally, the mixture was heated to 240°C and kept for a certain period of time such as 1, 5, 60, and 120 min. Synthesis of CdSe/CdS QDs As ... absorption and photolumi- nescence (PL) emission spectra of the PAA-capped CdSe QDs as a function of reaction time. With the extension of the reaction time, the CdSe QDs gradu...

Ngày tải lên: 21/06/2014, 08:20

... 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 ... mixture of single crystal and twinned crystals. HR-TEM analysis of the green sols shows the presence of only nanorods of different aspect ratios; on the other hand,...

Ngày tải lên: 21/06/2014, 17:20

... spectroscopy of the NE sample further confirm the absence of the template and the presence of the organic groups. The sample has a type- IV isotherm with a BET surface area of 815 m 2 g -1 and pore ... around -17 and -24 ppm represent the D 1 and the D 2 sites, respectively. The signals at -51, -56, and -64 ppm are from the T 1 ,T 2 , and T 3 sites, respectively. The presen...

Ngày tải lên: 22/06/2014, 00:20

... of nanoparticles, nanorods, and nanotubes were electro- chemically synthesized. The morphology of CeO 2 was modulated by changing electrode potential and potential direction. CeO 2 nanorods and ... (CNTs) in 1952 [1] and has offered great potential for applications in the electric devices, sensors, and others uses [2]. Con- trolled synthesis of inorganic nanoparticles now is...

Ngày tải lên: 22/06/2014, 01:20