solvent-controlled synthesis of tio2 1d nanostructures growth mechanism and characterization

... Solvent-controlled synthesis of TiO 2 1D nanostructures: Growth mechanism and characterization Kajari Das à , Subhendu K. Panda, Subhadra Chaudhuri Department of Materials Science and DST ... to investigate the effect of the co-solvent on the morphology and the properties of TiO 2 nanostructures, 19.2 g of NaOH was dissolved in 48 ml mixed solvent of water and...

Ngày tải lên: 20/03/2014, 13:08

... the band–band indirect transition of WO 3 . And a new growth mechanism for the as-synthesized WO 3 nanosheets was proposed. 2. Experimental procedure The precursor was prepared by oxidation of ... (H 2 O 2 ) [35,36]. In a typical synthesis, 6.5 g of W powder was dissolved into a mixed solution of 40.0 mL of H 2 O 2 and 4.0 mL of H 2 O with an ice-water bath and stirring...

Ngày tải lên: 20/03/2014, 13:08

... 2006 Abstract TiO 2 nanofibres were synthesized by the hydrothermal method. The result shows that the growth of TiO 2 nanofibres is sensitive to the concentration of NaOH and the heating temperature. © ... Hydrothermal synthesis of TiO 2 nanofibres Fei-Bao Zhang, Hu-Lin Li ⁎ College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, ... nthesize the low...

Ngày tải lên: 20/03/2014, 13:04

... results of Pd/titanate nanotubes. Red dots are of Ti and green dots are of Pd. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of the ... response of composition (a) is almost twice larger than those of the sensors of compositions (b), (c) and (d). The sensor response of composition (a) at 118 ◦ C is almost e...

Ngày tải lên: 20/03/2014, 13:08

... huang 5 ting yu 1,✉ Ultra-sharp α-Fe 2 O 3 nanoflakes: growth mechanism and field-emission 1 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological ... have been developed for the fabrication of 1D nanostructure arrays, including template methods [4] and catalytic growth [5]. Since the sharp tips of 1D nanostructur...

Ngày tải lên: 20/03/2014, 13:11

... carboxypeptidase-like acyltransferase and characterization of the kinetic mechanism Felix Stehle 1 , Milton T. Stubbs 2 , Dieter Strack 1 and Carsten Milkowski 1 1 Department of Secondary Metabolism, Leibniz Institute of Plant ... 1598–1604. 3 Kowalczyk S & Bandurski RS (1991) Enzymic synthesis of 1-O-(indol-3-ylacetyl)-beta-d-glucose. Purification of the enzyme from Ze...

Ngày tải lên: 23/03/2014, 07:20

... the morphology and growth temperature. We show that the formation of SiNWs is indeed closely re- lated to the amorphous SiO particles, and the growth and self-assembling process of SiNWs on the surface of ... Si core and a SiO 2 sheath. The one-dimensional growth of SiNWs is facili- tated by the SiO 2 sheath that con®nes the lateral growth of SiNWs, and the high ab...

Ngày tải lên: 16/03/2014, 15:06

... JEM2100F). 3. Results and discussion 3.1. Metal-assisted growth of SiNWs A basic aspect of the VLS mechanism is the metal particle acting as a catalyst for the anisotropic growth of SiNW with a crystalline structure. ... low-crystal quality of as-received SiNWs even amorphous SiO 2 nanowires. 3.3. Advantage and disadvantage of with and without metal growth The mentione...

Ngày tải lên: 16/03/2014, 15:09

... center (red band), and hydrogen-related species in the structure of SiO x (green band). The study on chemical reactions and growth of the SiO x nanowires revealed the formation process of silica ... [1]. The synthesis of 1D nanostructures is of fundamental importance to nanotechnology. Nanowires are particularly interesting as they offer the opportunity to investigate el...

Ngày tải lên: 16/03/2014, 15:19

... zhong.wang@mse.gatech.edu (ZLW), and APANNALE@cityu.edu.hk (STL). † Georgia Institute of Technology. ‡ City University of Hong Kong. § School of Materials Science and Engineering and School of Chemistry and Biochemistry, ... with different colors and appearances were formed on the surfaces of the Si wafers over a wide temperature range of 890-1320 °C and a long distanc...

Ngày tải lên: 16/03/2014, 15:30