异烟酸氮氧化物/磷钼酸镍络合物掺杂硅胶复合物的制备及其质子导电性(英文)

Preparation and proton conductivity of silicate gel doped with isonicotinic acid N-oxide and nickel phosphomolybdate

制备了异烟酸氮氧化物（简计为HINO）／磷钼酸镍有机-无机络合物（{[-Ni（H2O）8][H（H2O）2.5]（HINO）4（PMo12O40）}n；简计为1）掺杂硅胶复合物（简计为1-SG1）；采用红外光谱仪和X射线衍射仪证实了合成产物的结构．结果表明，化合物1的结构特征在1-SG1硅胶复合物中得以保留．与此同时，在约98％的相对湿度下，1-SG1在温度55～100℃范围内显示良好的导电性，其质子导电率达到8．98×10^-3～1．03×10^-2·cm^-1；并且，在同等条件下，1-SG1的质子导电性优于化合物1．

A silica gel composite （denoted as 1-SG1） doped with {[-Ni（H2O）8][H（H2O）2.5]（HINO）4（PMo12O40）}n （1）, a proton-conductive organic/inorganic complex of isonicotinic acid N-oxide （denoted as HINO） and nickel phosphomolybdate, was prepared by sol-gel method. The structure of as-synthesized 1-SG1 was confirmed by infrared spectrometry and X-ray diffraction, and its electric conductivity was calculated based on electrochemical impedance spectroscopic measurement. It was found that the structural characteristics of complex 1 are retained successfully in the silica gel skeleton of as-prepared 1-SG1 composite. Besides, 1-SG1 exhibits good proton conductivities of as much as 8.98×10-3～1.03×10-2·cm-1 in the tem- perature range of 55--100℃ under a relative humidity of 98% ; and in particular, it shows bet- ter proton conductivity than complex 1 at the same conditions, due to the presence of a large number of micropores and mesopores filled with ＂liquid＂.