Electrochemical behavior of Bis(2: 17-arsenotungstate) lanthanates and their electrocatalytic reduction for Nitrite
作者： Xi Xiaodan , Wang Guang , Liu Baifeng , Shaojun Dong
DOI: 10.1016/0013-4686(94)00327-W
关键词: Electrocatalyst 、 Nitrite 、 Inorganic chemistry 、 Electrochemistry 、 Sodium perchlorate 、 Aqueous solution 、 Lanthanide 、 Chemistry 、 Redox 、 Catalysis
摘要: A series of new catalysts, K-14[Ln(As2W17O61)(2)]. xH(2)O (Ln = La, Pr, Sm, Eu, Gd, Tb, Dy, Tm and Yb) which can electrocatalyze reduction nitrite are presented their electrochemical behavior is described in this paper. Bis(2:17-arsenotungstate) lanthanates monovacant Dawson derivatives, exhibit two 2-electron one 1-electron waves, attributed to electron addition removal from the tungsten-oxide framework that comprises each anion structure. The formal potentials redox couples dependent on solution pH. Double-hump principle takes effect with increasing atomic number lanthanide elements following special electronic shell third waves all heteropolyanions have good electrocatalytic activities for at pH 5.0.
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