| Waugh结构（NH4）6[NiMo9O32]·8H2O杂多酸盐的合成、表征及电化学性质研究 |
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| 引用本文： | 刘伟,袁华,王立霞,杨慧芳,谢德银.Waugh结构（NH4）6[NiMo9O32]·8H2O杂多酸盐的合成、表征及电化学性质研究[J].沧州师专学报,2008,24(1):27-29. |
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| 作者姓名： | 刘伟 袁华 王立霞 杨慧芳 谢德银 |
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| 作者单位： | 沧州师专化学与环境科学系 河北沧州061001 |
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| 基金项目： | 河北省教育学会科研基金 |
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| 摘 要： | 以（NH4）6Mo7O24.4H2 O,NiSO4和（NH4）2S2O8为原料合成了（NH4）6NiMo9O32]·8H2O杂多酸盐,并利用化学分析、差热热重、红外光谱、紫外光谱、循环伏安等方法对其进行了元素分析、结构及性质的研究。样品的红外光谱分析显示：在1000-400cm^-1处由两组突出的峰组成,显示出Waugh结构单元的特征谱带;紫外可见光谱分析显示：紫外区吸收峰位置为207nm处,可见区吸收峰位置为563.2nm;差热-热重分析显示：该化合物在1067.9-1103.5K分解,说明具有较高热稳定性;循环伏安曲线显示：该电极反应为半可逆过程,是以扩散控制的表面氧化还原过程,且伴随质子化。
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| 关 键 词： | Waugh结构 九钼镍杂多酸铵 合成 表征 |
| 文章编号： | 1008-4762(2008)01-0027-03 |
| 修稿时间： | 2006年10月21 |
Synthesis and Characterization of Ammonium 9-molybdate Nickel Heteropoly Salt with Waugh Sructure. |
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| LIU Wei,YUAN Hua,WANG Li-xia,YANG Hui-fang,XIE De-yin.Synthesis and Characterization of Ammonium 9-molybdate Nickel Heteropoly Salt with Waugh Sructure.[J].Journal of Cangzhou Teachers‘College,2008,24(1):27-29. |
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| Authors: | LIU Wei YUAN Hua WANG Li-xia YANG Hui-fang XIE De-yin |
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| Institution: | (Department of Chemistry ,Cangzhou Teachers College, Hebei Cangzhou 061001 China ) |
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| Abstract: | Ammonium 9-molybdate nickel heteropoly salt with Waugh structure was synthesized by the reaction of nickel sulfate and ammonium heptamolybdate by oxidation of ammonium peroxydisulfate at acetic acid pH4-6.The title compound was characterized by IR,UV-Vis,TG-DT thermal analysis and CV.The fomula was determined by chemical analysis to be(NH4)6NiMo9O32].8H2O.It can be seen from IR spectrum that there are characteristic band of Waugh-type heteropolyacidic salt in the range of 1000-400cm-1.From UV spectrum,in Ultraviolet region there is a band at 207nm assigned to electronic transition from double bonds of oxygen to Mo atom and there is a bond at 563.2nm in visible range.We can see from the TG-DTA curves that ammonium 9-molybdate nickel heteropoly salt can be decomposed at 1067.9-1103.5K..It indicated from the cyclic voltammetry(CV) curve there was a good linear relationship between ip and v1/2,suggesting the electrode reaction being controlled by diffusion oxido-reduction process.The voltage of cathodic and anodic peak was becoming progressively more positive with decreasing pH,the variation presumably related to variation in protonation.of the cluster. |
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| Keywords: | ammonium 9-molybdate nickel heteropoly salt synthesis characterization Waugh structure cyclic voltammetry(CV) IR UV-Vis TG-DTA |
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