Keggin型铜取代杂多酸盐的合成、表征及电化学性能

Synthesis, Characterization and Electrochemistry Property of Keggin-type Cu-substituted Heteropoly Compound

在中性水溶液中合成了Keggin型铜取代磷钨杂多阴离子PW11O39Cu（II）（H2O）5-（PW11Cu）,并对其进行IR、UV-Vis和循环伏安表征.实验结果表明,PW11Cu在700～1100 cm^-1的指纹区内有四个特征振动吸收峰,分别对应于P-Oa、W=Od、W-Ob-W和W-Oc-W的反对称伸缩振动吸收.在200nm和249 nm处有两个很强的紫外吸收,在650-800 nm的可见光区有一个较强的连续吸收带.循环伏安显示W-O骨架波和一对Cu的氧化-还原波.

Keggin-type Cu（II）-substituted heteropolyanion PW11O39Cu（II）（H2O）^5-（PWI1Cu） was synthesized in neutral aqueous solution and characterized by IRI UV-Vis and cyclic vohammetry. Experimental results showed that in the 700-1100 cm^-1 fingerprint area PWHCu exhibits five characteristic absorption peaks, corresponding to the anti-symmetric stretching vibration of P-Oa, W=Od, W-Ob-W and W-Oo-W, respectively. There are two strong UV absorptions at near 200 nm and 249 nm and a continuous visible absorption band in the district of 650-800 nm for PW11CU. In addition to W-O skele- ton-waves a pair of Cu（II）/Cu（I） redox wave appears in the cyclic vohammograms.