光电催化降解磺基水杨酸的研究

 建立了以刮浆工艺制得的TiO2／Ni为工作电极、泡沫镍为对电极、饱和甘汞电极为参比电极的光电催化反应体系，研究了在磺基水杨酸（SSal）的光电催化降解过程中，外加电压和溶液pH值对降解速率的影响．实验发现，外加阳极偏压为700mV时，SSal能发生有效降解，降解速率受溶液pH值的影响；随着SSal降解的进行，阳极表面电阻出现较大的变化．另外还研究了SSal光电催化降解过程中的电流变化特征．

Study of Photoelectrocatalytic Degradation of Sulfosalicylic Acid

A three electrode system composed of TiO 2/Ni as the working electrode, porous nickel as the counter electrode and saturated calomel electrode (SCE) as the reference electrode was used for the photoelectrocatalytic degradation of sulfosalicylic acid (SSal) under anodic bias potential. The results show that SSal can be degraded effectively as the external potential is up to 700 mV and that the degradation rate is dependent on the solution pH value. And the current of the external circuit changes during the course of photoelectrocatalytic degradation.