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【期刊论文】Synthesis and conductivity of solid high-proton conductor H5GeW10MoVO40.21H2O
吴庆银, Qingyin Wu*, Xiaoguang Sang
Materials Research Bulletin 40(2005)405-410,-0001,():
-1年11月30日
A new solid high-proton conductor decatungstomolybdovanadogermanic heteropoly acid (HPA) H5GeW10- MoVO40 21H2O has been synthesized for the first time by stepwise acidification and stepwise addition of solutions of the component elements. The product was characterized by chemical analysis, potentiometric titration, IR, UV, XRD and TG-DTA. The IR, UVand XRD indicate that H5GeW10MoVO40 21H2O possesses the Keggin structure. The TG-DTA curve shows the sequence of water loss in the acid, the amount of the loss, as well as the thermostability. The results of AC impedance measurement show that its proton conductivity is 3.58×10-4 S cm-1 at 18℃ and the activation energy for proton conduction is 31.82kJ/mol.
A., Inorganic compounds, B., Chemical synthesis, C., Infrared spectroscopy, D., Ionic conductivity
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【期刊论文】Synthesis and Conductivity of High Proton Conductor H6GeW10V2O40.22H2O
吴庆银, Xiao-Guang Sang and Qing-Yin Wu*
Chemistry Letters Vol.33, No.11 (2004)1518-1519,-0001,():
-1年11月30日
The decatungstodivanadogermanic heteropolyacid H6GeW10V2O40.22H2O was synthesized for the first time by the stepwise acidification and the stepwise addition of solutions of the component elements. The product was characterized by means of inductively coupled plasma (ICP), IR, UV, X-ray diffraction and thermal analysis. The results of AC impedance measurement show that its proton conductivity is 1.20×10-2 S.cm-1 at room temperature (16℃).
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吴庆银, Qingyin Wu*, Xufeng Xie
Materials Chemistry and Physics 77(2002)621-624,-0001,():
-1年11月30日
Polypyrrole (PPy) hybrid material doped vanadotungstogermanic triheteropoly acid was prepared for the first time. Their SEM, IR and XRD patterns confirm the existence of Keggin anions and form the space reticular structure. The material exhibits excellent proton conduction, its proton conductivity is 1.24×10−2 S cm−1 at room temperature (18℃).
Hybrid organic-inorganic materials, Heteropoly acid, Polypyrrole, Conductivity
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【期刊论文】Preparation and performance of PVA films composited with 12-tungstogermanic heteropoly acid
吴庆银, Qingyin Wua, *, Huaibing Wang b, Chuanshi Yin b, Guangyao Meng b
Materials Letters 50(2001)61-65,-0001,():
-1年11月30日
PVA films containing 12-tungstogermanic heteropoly acid have been successfully prepared for the first time. Infrared (IR) spectra revealed that the Keggin structure characteristic of the GeW12O440y anion was present in the PVA films. The characteristic IR peaks have been identified and their change in wave number interpreted as a function of heteropoly acid (HPA) content. The film exhibited considerably high proton conductivity, which increased with the increase of the 12-tungstogermanic heteropoly acid content. At room temperature (208C), the conductivity of the PVA film containing 80 wt.% 12-tungstogermanic heteropoly acid is 2.11=10y2 S cmy1. The photochromism of the PVA film was observed. Its color changed into blue. q2001 Elsevier Science B.V. All rights reserved.
PVA, Films, 12-tungstogermanic heteropoly acid, Conductivity, Photochromism
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【期刊论文】Preparation and conductivity of vanadotungstogermanic heteropoly acid
吴庆银, Qingyin Wua, b, *, Guangyao Mengb
Solid State Ionics 136-137(2000)273-277,-0001,():
-1年11月30日
The vanadotungstogermanic heteropoly acid H3 GeW11 VO40 22H2O has been prepared for the first time by the stepwise acidification and the stepwise addition of solutions of the component elements. The suitable condition for the synthesis reaction is given. The product was characterized by means of ICP, potentiometric titration, IR, UV, V NMR, X-ray powder 23 diffraction and thermal analysis. The result of AC impedance measurement shows that its proton conductivity is 2.43×10-3 S cm-1 at 18℃.
Heteropoly acid, Vanadotungstogermanic acid, Preparation, Characterization, Protonic con
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