已为您找到该学者10条结果 成果回收站
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
-
52浏览
-
0点赞
-
0收藏
-
0分享
-
69下载
-
0
-
引用
吴庆银, Qingyin Wu
Materials Chemistry and Physics 77(2002)204-208,-0001,():
-1年11月30日
Silica gels composited with undecatungstochromoferrous acid have been prepared by the sol-gel method. FT-IR spectra and SEM declared that theKeggin structure characteristic of the Fe(H2O)CrW11O39 6−anionwas found in the silica gel skeleton. The change of characteristic peaks in IR spectra was analyzed. XRD pattern showed that the gel was amorphous. The gel exhibited considerably high-proton conductivity, which increased from 1.88×10−3 to 1.11×10−2 S cm−1 with the increase of the content of undecatungstochromoferrous acid at 20℃.
Composite materials, Sol-gel growth, Fourier transform infrared spectroscopy, Electrical conductivity
-
40浏览
-
0点赞
-
0收藏
-
0分享
-
115下载
-
0
-
引用
吴庆银, Qingyin Wu a, *, Shukun Wang b, Danni Li a, Xufeng Xie a
Inorganic Chemistry Communications 5(2002)308-311,-0001,():
-1年11月30日
The decatungstomolybdoniobogermanic heteropoly acid H5 [GeW10MoNbO40] 20H2O has been prepared for the first time. The optimal proportion of the solutions of the component and the pH of the synthesis reaction are given. The product was characterized by chemical analysis, conductometric and potentiometric titration, IR, UV, XRD, 183W NMR and TG-DTA. The IR, UV, XRD and 183WNMR indicate that H5 [GeW10MoNbO40] 20H2O 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 of the acid.
Heteropoly acid, Deca-tungstomolybdoniobogermanic acid, Preparation, Characterization
-
117浏览
-
0点赞
-
0收藏
-
0分享
-
145下载
-
0
-
引用
【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
-
29浏览
-
0点赞
-
0收藏
-
0分享
-
100下载
-
0
-
引用
【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
-
48浏览
-
0点赞
-
0收藏
-
0分享
-
71下载
-
0
-
引用