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用循环伏安、准稳态极化曲线和恒电位阶跃法研究了弱酸性介质中硝基甲烷在碳化钨(WC)电极上的电化学行为。研究表明:弱酸性介质中硝基甲烷在WC电极上的还原经历了两个电子得失过程,其反应过程主要受扩散控制。硝基甲烷在WC电极上发生还原反应的活化能为4.15kJ/moL,表明WC对硝基甲烷的电化学还原具有较好的电催化活性。
The electrochemical behavior of nitromethane on tungsten carbide (WC) electrode in weakly acidic media was investigated by cyclic voltammetry, quasi-steady-state polarization curve and potentiostatic step method. The results show that the reduction of nitromethane on the WC electrode in weakly acidic medium has experienced two processes of gain and loss of electrons, and its reaction process is mainly controlled by diffusion. The activation energy of nitromethane reduction on WC electrode was 4.15kJ / mol, indicating that WC has good electrocatalytic activity for the electrochemical reduction of nitromethane.