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 Pavasupreea,b, Supachai Ngamsinlapasathiana,Yoshikazu ... The BET surface area and pore volume of the sample are about 642 m2/g and 0.774 cm3/g, respectively.© 2006 Published by Elsevier B.V.Keywords: Nanosheet; Mesoporous; High surface area; TiO21. ... and so on [11–22].Functional properties of TiO2are influenced by many factorssuch as crystallinity, particle size, surface area, and preparation [11]. In the view point of surface area, nanosheet...

Preparation and characterization of the PVDF-based composite membrane for direct methanol fuel cells

... 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 Wwet is the weight of the sample membrane saturated with deionized water for 48 h and weighed immediately after removing surface water with filtration paper. International Journal of ... (DMAc) firstly, and then styrene, divinylbenzene (DVB) and benzoyl peroxide (BPO) were added to the solution and stirred with water bath at 343 K. The dosage of PVDF, styrene, DVB and BPO was that...

Tài liệu Báo cáo "Preparation and characterization of nanocomposite TiO2/SnO2 films " pdf

... TiO2 photosensitivity and SnO2 conductivity. 2. Experimentals Preparation of TiO2 films: The principle of TiO2 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 the formation of TiO2 ... RD/RL spectra of TiO2 prepared at 400oC impregnated and annealed at 325, 375 and 425oC. 3. Discussion TiO2 belongs to dielectric materials. With a wide band gap of 3.2 eV, at room...

Báo cáo khoa học: Engineering and characterization of human manganese superoxide dismutase mutants with high activity and low product inhibition potx

... amide of Asn73 is near to (3.1 A˚) and possibly hydrogenbonded with the side chain carbonyl of Gln143. With the substitution of Gln143 with Ala, this favorableinteraction between Gln143 and ... the crystal structure. However, thebackbone amide and carbonyl of Cys140 form hydro-gen bonds with the backbone carbonyl and amide of Trp123, the side chain of which forms one wall of theactive ... cloning site of the vector by digestion with NcoI and PstI. This vectorbackbone was excised from an agarose gel and puriﬁed. Forboth standard and error-prone PCR ampliﬁcation of hMnSOD genes,...

Preparation and photoluminescence of high density siox nanowires with fe3o4 nanoparticles catalyst

... Preparation and photoluminescence of high density SiOx nanowires with Fe3O4nanoparticles catalystX.J. Wanga,⁎, B. Dongb, Z. ZhouaaSchool of Electronics Engineering and Computer ... nm weresynthesized 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 SiOx nanowires was ... devoted to preparation of Fe3O4nanoparticles, nanowires and nanotubes. In2002, Sun and Zeng [10] prepared the size-controlled monodisperseFe3O4nanoparticles with 4–16 nm by high- temperature...

preparation and characterization of cnts tio2 composites

... C–O, C=O and O – C=O which might stimulate formation of the composites, and enhance the interfacial combination of TiO2 with carbon nanotubes. The formation of TiO2 and its compounding with CNTs ... combination with TiO2then. From the above results, the total area of the C1s peak region of the MWNTs sample consists of 68.37% C–C, 22.25% C–O, 6.80% C=O and 2.58% O–C=O. These surface polar ... mixing or filmcasting of suspensions of CNTs in dissolved polymer [7],(2) in situ polymerization of CNT–polymer monomermixture [8], and (3)mechanically melt mixing of CNTs with polymers [9].Besides...

preparation and characterization of monodispersed wo3 nanoclusters on tio2(110)

... On the other hand, the surface density of quite bright spots is about the same before and afterannealing.The areal density of the spots of intermediate brightnessvaries linearly with the mass ... WO3nmÀ2 and metallic W.Fig. 2. Linear correlation of WNVV/TiLMMAES ratio and W4fintensity with amount of deposited WO3, the latter is plotted in units of WO3nmÀ2basedQCM measurement of ... IntroductionThe preparation and characterization of nanoclusters onsupporting surfaces remain signiﬁcant challenges fornanoscience in general and especially for systems used in surface science...

Báo cáo khoa học: Preparation and characterization of geodin A bc-crystallin-type protein from a sponge pot

... 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, henceforthtermed IB preparation, as presumably it consists of proteinssequestered in inclusion bodies.Both preparations S and ... near- and far-UV CD and calorimetry, shows that geodinunfolds with a typical cooperative transition in agree-ment with a two-state model, with a simultaneous col-lapse of secondary and tertiary...

Preparation and characterization of bimodal magnetofluorescent nanoprobes for biomedical application

... coating of amorphous mesoporous silica on the surface of Fe3O4nanoparticles. All of the diffraction peaks of CdTeSQDs in Fig. 2(c) are between the diffraction peaks of the cubic CdTe and CdS structures, ... CTAB;[16] and 0.5 mL of the resultingFe3O4/CTAB aqueous solution were diluted with 10 mL of water. Then 0.3 mL of NH4OH aqueoussolution, 0.03 mL of tetraethylorthosilicate (TEOS), and 0.5 mL of ... through the thermal decomposition of Fe oleate precursors and coated with a mesoporous silica shell using the Stöber method, and the silica surface is then modified with positively chargedamino groups...

INFLUENCE OF STREAMSIDE SURFACE AREA ON AQUATIC BIOTA AND BIOFILM ACTIVITY

... (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 riverbed creates new supermicrohabitats, ... the influence of an increase in surface area and porosity of streamside on the amount and succession along with the downstream distance of aquatic biota in each trophic level, and (2) a separate...

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