新型复合电极及其光催化反应的研究

Studies on novel composite electrode and photocatalytic reaction

介绍了具有合成 H2 O2 和光催化性能的双功能新型复合电极 .双功能复合电极是将 Ti O2 /C光催化剂负载在具有合成 H2 O2 性能的新型载体上形成的 .实现了光化学氧化与光催化氧化在同一电极 /溶液界面上的联合作用 .实验结果表明 ,空气电极工作电流密度对偶氮染料分子活性艳红 (K-2 BP)的氧化降解速度有影响 ,i=1 5 m A/cm2 ,速度达到最大 .实验发现偶氮染料分子在复合电极表面的吸附量与反应速度密切相关 .文中讨论了复合电极的作用原理及其稳定性、偶氮染料分子的氧化降解过程 .

A novel composite electrode which has functions of synthesizing H 2O 2 and photo catalysis was reported.This double function composite electrode was prepared by loading photo catalyst TiO 2/C on a novel carrier which can synthesize H 2O 2.Combining oxidation of photochemistry and photocatalysis exists at the same interface of electrode_solution.The current density of air (oxygen)electrode had effcct on the oxidation rate of azo dye molecule,i=15 mA/cm 2,the rate could reach maximam.The experimental results showed that the composite electrode played an important role in enhancing the oxidation rate of azo dye molecule.It was found that the oxidation rate of azo dye molecule is related to its adsorption amount on the surface of composite electrode.The principle of action and stability of composite electrode and oxidation degradation course of azo dye molecule were also discussed.