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synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods
synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods
... Physica B 392 (2007) 154–158 Synthesis, structure and magnetic properties of iron-doped tungsten oxide nanorods P.Z. Sia,b,c,Ã, C.J. Choib, E. Bru¨ckc, J.C.P. ... magnetometer. The nanorods were mainly composed of tungsten, iron and their oxides. The iron-rich phase in the nanorods exhibits soft ferromagnetic behaviors with zero coercivity and zeroremanence and a ... 81.07.WxKeywords: Iron; Nanorods; Magnetic properties; Tungsten oxide 1. IntroductionNanomaterials have been the subject of intense researchin recent years because of their unique properties incomparison...
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synthesis and optical properties of colloidal tungsten oxide nanorods
... Synthesis and Optical Properties of Colloidal Tungsten Oxide Nanorods Kwangyeol Lee, Won Seok Seo, and Joon T. Park*National Research Laboratory, Department of Chemistry and School of Molecular ... size-depend-ent properties of the oxide nanorod itself as well as of inorganicderivatives prepared from the oxide. Herein we report a simplelarge-scale preparation of soluble and highly crystalline tungsten oxide ... tungsten oxide nanorods of varying sizes by a mild, solution-based colloidalapproach.A stirred slurry of 0.70 g of W(CO)6(Strem, 99%), 1.33 g of Me3NO‚2H2O (6 equiv, Aldrich, 98%), and 8.5 g of...
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Tài liệu Báo cáo " The effect of cobalt substitution on structure and magnetic properties of nickel ferrite " pptx
... VNU Journal of Science, Mathematics - Physics 25 (2009) 153-159 153 The effect of cobalt substitution on structure and magnetic properties of nickel ferrite Nguyen Khanh ... magnetization and low coercivity. To our knowledge, the systematic investigation of the magnetic and electrical properties of Ni1-XCoX Fe2O4 with x varied from 0 to 0.8 in steps of 0.2 has ... influence of the Co content on the crystal lattice parameter, the stretching vibration and the magnetization of specimens were subsequently studied. XRD and FTIR were used to investigate structure and...
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Báo cáo khoa học: H NMR study of the molecular structure and magnetic properties of the active site for the cyanomet complex of O2-avid hemoglobin from the trematode Paramphistomum epiclitum pdf
... 10)8m3Æmol)1, and numerous of its point mutants [26,30], and confirm the strong conserva-tion of the magnetic anisotropies of low-spin hemin withHis/cyanide ligation. The 10° tilt of the major magnetic ... R.J.P.(1985) Comparison of the solution and crystal structures of mitochondrial cytochrome c. Analysis of paramagnetic shifts inthe nuclear magnetic resonance spectrum of ferricytochrome c.J. ... al.(Eur. J. Biochem. 270) Ó FEBS 20031H NMR study of the molecular structure and magnetic properties of the active site for the cyanomet complex of O2-avid hemoglobinfrom the trematodeParamphistomum...
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Báo cáo khoa học: Crystal structure and enzymatic properties of a bacterial family 19 chitinase reveal differences from plant enzymes pdf
... present analysis of enzymatic properties of ChiG, or by our analysis of the ChiG and ChiCstructures.Despite the deletion of the B-loop, the two putativecatalytic residues Glu68 and Glu77 are ... enzymewith respect to its catalytic properties and crystal structure. The crystal structures of ChiG and ChiC[18] permitted structural comparison between bacterial and plant enzymes, which provided ... violet) and a small, presumablyamorphous, subfraction of a-chitin and b-chitin, but was not capable of degrading crystalline chitin completely. The crystal structures of chitinaseG and a related...
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Large scale synthesis, characterization and photoluminescence properties of amorphous silica nanowires by thermal evaporation of silicon monoxide
... kind of structure asseen by Park and Yong [13] and Zhang et al. [23] was observed.This reveals that the nanowires have uniform amorphous structure across the length and diameter. EDAX spectra of ... diffusion of Si/SiOxvapors into the metalparticles, (ii) formation of liquid droplet of metal and Si/SiOx and (iii) the precipitation in the form of solid nanowires aftersuper-saturation of liquid ... a substrate. The structure and photo-luminescence (PL) property of the as-deposited material has beeninvestigated and the growth of SiO2nanowires is discussed on thebasis of tiny SiO2cluster...
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Báo cáo khoa học: Quaternary structure and functional properties of Penaeus monodon hemocyanin docx
... widerdistribution of Hc as an oxygen carrier [4–6].The basic structure of all arthropod Hc oligomersis a hexamer of subunits [7]. This structure has beensolved by crystallography [8,9] and by electron and cryoelectron ... allosteric properties of the protein and to trace the evolutionary pathway of the allostericbehaviour.ResultsCharacterization of the oligomeric state of P. monodon HcIn gel-filtration experiments of ... Beltramini et al. P. monodon hemocyanin structure and functionFEBS Journal 272 (2005) 2060–2075 ª 2005 FEBS 2075Quaternary structure and functional properties of Penaeusmonodon hemocyaninMariano...
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gas sensing properties of nanocrystalline tungsten oxide synthesized by acid
... calcinations are in the range of 30–150 nm.The gas sensing properties of these powders in the form of thick film were investigated with and withoutplatinum doping. Gas response of thick films sintered ... detection of toxic environmentalpollutants, and for the prevention of hazardous gas leaks. Different oxide semiconductors such as SnO2,WO3, ZnO, MoO3, TiO2,In2O3 and mixed oxides have ... ammonia gas sensing prop-erties of nanocrystalline tungsten oxide with and withoutplatinumdoping under different processing conditions.2. Experimental Tungsten trioxide powder was prepared by...
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facile synthesis and no2 gas sensing of tungsten oxide nanorods assembled microspheres
... attentions [2,3].Nanostructures of well-established gas sensing materials like tin oxide [4–6], zinc oxide [7], tungsten oxide [8–10], titanium oxide [11,12], and indium oxide [13,14] have shown ... asNO2,O3,H2,H2S, andNH3[21]. In particular, tungsten oxide showedsuperior sensitivity and selectivity in detecting NO2gas [22,23].Onthe other hand, nanostructural tungsten oxide such as nanorods [24], ... synthesisof tungsten oxide nanorods assembled microspheres by a facile hydrothermal method. To ourknowledge, there isno report on thegas sensing of the microsphere-like tungsten oxide nanostructures....
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structural and electrochromic properties of tungsten oxide prepared by surfactant-assisted process
... excess and resulted in partial reduction of the oxide. Sample D could becomposed of tungsten oxides, in which the oxidation state of tungsten ranges from +6 like in WO3with a small amount of WOx.3.5. ... nanosize in the continuity of tungsten oxide frameworks.According to the previous study of electrochromic oxides [31],such type of nanostructure containing mesopores in tungsten oxides thin films may ... microscopy images were used.Figs. 4a, b and c show the TEMimages of nanostructured tungsten oxides of as-synthesizedsample B and sample C calcined at 300 1C and sample D calcinedat 400 1. Significant...
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