二氧化钛多孔薄膜对含氯苯酚的电助光催化降解

用涂膜法制备了具有多孔微结构的二氧化钛薄电极，以制得的电极为工作电极，建立了三电极的电助光催化体系。选择含氟苯酚（４－氯苯酚，２，４，６－三氯苯酚）作为降解对象，进行光催化研究。实验结果表明，外加电极偏压可抑制光生电子－空穴的复合，提高二氧化钛的光催化效率；光强越强，降解速度越快。

ELECTROCHEMICALLY ASSISTED PHOTOCATALYTIC DEGRADATION OF CHLOROPHENOLS USING TiO2 MICROPOROUS FILM

TiO 2 thin film electrodes with microporous structure were prepared by film coating. Using the TiO 2 thin film electrode as working electrode, the electrochemically assisted photocatalytic system that had three kinds of electrodes (working electrode, reference electrode and counter electrode) was built. Selecting 4 chlorophenol (4 CP) and 2,4,6 trichlorophenol (TCP) solution as substrates, the photocatalytic degradation was studied. The results indicated that the benzene ring of 4 CP and TCP had been destroyed. Application of the anodic bias can restrain the reposition of photogenerated electron and hole, thus improve the photocatalytic efficiency of TiO 2 particles. It was also showed that the stronger the light intensity is, the higher the degradation efficiency.