preparation and characterization of high surface area nanosheet titania with mesoporous structure

... Preparation and characterization of high surface area nanosheet titania with mesoporous structure Sorapong Pavasupree a,b , Supachai Ngamsinlapasathian a , Yoshikazu ... The BET surface area and pore volume of the sample are about 642 m 2 /g and 0.774 cm 3 /g, respectively. © 2006 Published by Elsevier B.V. Keywords: Nanosheet; Mesoporous; High surface...

Ngày tải lên: 20/03/2014, 13:06

... the polymerization of styrene and the blending of PS and SPS polymers have affected the surface structure of the PVDF membrane obviously. The cross-section morphologies of the PVDF membrane, ... h and W wet is the weight of the sample membrane saturated with deionized water for 48 h and weighed immediately after removing surface water with filtration paper. In...

Ngày tải lên: 05/09/2013, 16:11

... TiO 2 photosensitivity and SnO 2 conductivity. 2. Experimentals Preparation of TiO 2 films: The principle of TiO 2 preparation in this work was based on pyrolysis of chloride salts. The ... constant with the help of an electronic digital controller. Under an open-air environment and at high temperature, hydrolysis of Ti salt solutions takes place, resulting in t...

Ngày tải lên: 13/02/2014, 04:20

... amide of Asn73 is near to (3.1 A ˚ ) and possibly hydrogen bonded with the side chain carbonyl of Gln143. With the substitution of Gln143 with Ala, this favorable interaction between Gln143 and ... the crystal structure. However, the backbone amide and carbonyl of Cys140 form hydro- gen bonds with the backbone carbonyl and amide of Trp123, the side chain of which...

Ngày tải lên: 07/03/2014, 11:20

... Preparation and photoluminescence of high density SiOx nanowires with Fe 3 O 4 nanoparticles catalyst X.J. Wang a, ⁎ , B. Dong b , Z. Zhou a a School of Electronics Engineering and Computer ... nm were synthesized by high temperature solution phase reaction of iron (III) acetylacetonate with 1,2-dodecandiol in the presence of oleic acid and oleylamine. The growth of...

Ngày tải lên: 16/03/2014, 15:11

... C–O, C=O and O – C=O which might stimulate formation of the composites, and enhance the interfacial combination of TiO 2 with carbon nanotubes. The formation of TiO 2 and its compounding with CNTs ... combination with TiO 2 then. From the above results, the total area of the C 1s peak region of the MWNTs sample consists of 68.37% C– C, 22.25% C–O, 6.80% C=O and 2.5...

Ngày tải lên: 20/03/2014, 13:06

... On the other hand, the surface density of quite bright spots is about the same before and after annealing. The areal density of the spots of intermediate brightness varies linearly with the mass ... WO 3 nm À2 and metallic W. Fig. 2. Linear correlation of W NVV /Ti LMM AES ratio and W 4f intensity with amount of deposited WO 3 , the latter is plotted in units of WO 3 n...

Ngày tải lên: 20/03/2014, 13:06

... evolution of bacteria and moulds, and then very early recruited in the metazo- ans. Here we report the expression and purification of recombinant geodin and its thermodynamic and spect- roscopic characterization, ... another preparation containing a protein with the mobility of geodin, henceforth termed IB preparation, as presumably it consists of proteins sequestered i...

Ngày tải lên: 30/03/2014, 15:20

... coating of amorphous mesoporous silica on the surface of Fe 3 O 4 nanoparticles. All of the diffraction peaks of CdTeS QDs in Fig. 2(c) are between the diffraction peaks of the cubic CdTe and CdS structures, ... CTAB; [16] and 0.5 mL of the resulting Fe 3 O 4 /CTAB aqueous solution were diluted with 10 mL of water. Then 0.3 mL of NH 4 OH aqueous solution, 0.03 mL of...

Ngày tải lên: 14/05/2014, 15:49

... (gravel and brick) of different surface areas were installed on both banks of two test channels so as to have the same capacity, and effects of differences in surface area and porosity of the ... restoration is an increase in the surface area and porosity of riverbanks and riverbed. An increase in the surface area and porosity of riverbanks and riverb...

Ngày tải lên: 05/09/2013, 08:40