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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 70 0mV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 .
A photoelectrocatalytic reaction system of TiO2 / Ni with working electrode, nickel foam as counter electrode and saturated calomel electrode as reference electrode was established. The photocatalytic activity of photoelectrocatalysis of sulfosalicylic acid (SSal) During the degradation process, the applied voltage and the pH value of the solution affected the degradation rate. The results showed that SSal could degrade effectively with an applied bias of 70 0mV, and the degradation rate was affected by the pH value of the solution. With the degradation of SSal, The surface resistance of the anode changed greatly, and the current change characteristics during the photoelectrocatalytic degradation of SSal were also studied.