Báo cáo hóa học: " Solvothermal synthesis of uniform bismuth nanospheres using poly(N-vinyl-2-pyrrolidone) as a reducing agent" pptx

... Nikolopoulou A, Papoulis D, Komarneni S, Tsolis-Katagas P, Panagiotaras D, Kacandes GH, Zhang P, Yin S, Sato T: Solvothermal preparation of TiO 2 / saponite nanocomposites and photocatalytic activity. Appl ... participated in the acquisition of data and drafted the manuscript. FQ carried out the SEM characterization and participated the analysis and interpretation of data. ZL and HJY...

Ngày tải lên: 21/06/2014, 06:20

... reaction times, all together 2 to 7 days, to yield a crystalline particle [1-4]. Some researchers reported an approach using fatty acids and a mixture of fatty acids and amines and applying a ... experiments and analyzed the data. YK, and SJ analyzed the data and discussed the analysis. YK, and SJ designed the experiments. YK and SJ wrote the manuscript. All authors read and app...

Ngày tải lên: 21/06/2014, 17:20

... was added. The autoclave was sealed and maintained at 180 °C for 12 h; then it was allowed to cool to room temperature naturally. The as- formed black precipitates were separated by centrifugation, washed ... Bohr radius of most materials, the method is often far from effective. As an alternative, the band gap can also be tailored by adjusting the composition of materials. It is well...

Ngày tải lên: 22/06/2014, 00:20

... mixture was continuously stirred for 2 h and then was loaded into a Teflon-lined stainless steel autoclave of 55 mL capacity. The autoclave was sealed and maintained at 200 °C for 24 h in an electric ... carried out in details by changing the reaction time, temperature, and concentrations of starting materials. The phase and crystallinity of the as- prepared samples were characterized...

Ngày tải lên: 22/06/2014, 00:20

... reaction times, all together 2 to 7 days, to yield a crystalline particle [1-4]. Some researchers reported an approach using fatty acids and a mixture of fatty acids and amines and applying a ... nm, exhibiting a quantum yield of approximately 28%. The diameters of at least 100 nanocrystals were counted for each sample from TEM images, and the average size and standard dev...

Ngày tải lên: 20/06/2014, 20:20

... cross-sectional FE-SEM images of AZO nanostructure arrays fabricated on FTO substrates in an Al concentration of 4 mM solution. Scale bar, 300 nm. (c) The EDS spectrum of AZO nanostructure array sample fabricated ... demonstrate the performance enhancement of the IOSCs based on the flake-l ike AZO nanostructures acting as an ETL and a possible electron acceptor. By doping and vary...

Ngày tải lên: 20/06/2014, 22:20

... g −1 , as confirmed by BET surface area measurements. In addition, the electron diffraction (selected area electron diffraction [SAED]) pattern of the selected area coincided with that of anatase ... long-term cyclability as well as superior rate capabilities than those calcined at 800°C (Figure 5), possibly a result of the nanosize effect of the small particle size and la...

Ngày tải lên: 20/06/2014, 23:20

... a specific capacitance of 944 F/g at a scan rate of 1 mV/s based on the mass of MnO 2 alone or 141 F/g based on the total mass of the composite. From works reported in the literature so far, ... 5. Wang LZ, Sakai N, Ebina Y, Takada K, Sasaki T: Inorganic multilayer films of manganese oxide nanosheets and aluminum polyoxocations: fabrication, structure, and electrochemical be...

Ngày tải lên: 20/06/2014, 23:20

... Wen Nan 3 and Helen Lai Wah Chan 2 Abstract A large quantity of ultrafine tetragonal barium titanate (BaTiO 3 ) nanoparticles is directly synthesized at room temperature. The crystalline form and ... phases of BaTiO 3 [21]. The sharp peak at 186 cm -1 (E(2TO) + E(1LO) + A1 (1TO) + A1 (1LO)) whichvanishesabove5°Crevealsthatitisafeatureof orthorhombic phase. A sharp peak 169 cm -1 whi...

Ngày tải lên: 21/06/2014, 01:20

... 44:687. 24. Srivastava A, Srivastava A, Talapatra S, Vajtai R, Ajayan PM: Carbon nanotube filters. Nat Mater 2004, 3:610. 25. Xie SS, Li WZ, Pan ZW, Chang BH, Sun LF: Carbon nanotube arrays. Eur Phys ... synthesis of aligned carbon nanotubes bundles using green natural precursor: neem oil Rajesh Kumar, Radhey Shyam Tiwari * , Onkar Nath Srivastava Abstract Practical application of a...

Ngày tải lên: 21/06/2014, 06:20