Experimental study of photoelectrocatalytic degradation of phenol-containing wastewater on immobilized TiO2

Using TiO2/Ni thin film electrode prepared by dip-coating technique as working electrode, the photoelectrocatalytic system with three kinds of electrodes is built. The advantages of combining photocatalysis with electrochemistry, by applying positive potentials (versus SCE) across the photoelectrode, are confirmed. And it is found that pH value of solution, initial phenol concentration, number of film layers and voltage of electrical bias applied have obvious influence on the degradation of phenol. Meanwhile, types of dissolved gas and inorganic ions do not significantly affect on the degradation of phenol.