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值对降解速度的影响。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，阴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。

研究了由偏钛酸在不同温度下焙烧制成的TiO2，经氢还原后用于光催化降解磺基水杨酸（SSal）以及TiO2的漫反射光谱和荧光光谱特征结果表明，锐钛型TiO2在经550℃氢还原处理120min后，光催化活性明显提高；600℃条件下焙烧制得的TiO2，经氢还原后其光催化降解SSal的反应活性最高漫反射光谱结果表明，800℃条件下焙烧制得的TiO2，开始出现转晶现象，从锐钛型逐渐向金红石型过渡TiO2荧光光谱的荧光峰面积（F）和倍频峰面积（R）的比值越大，TiO2光催化降解SSal的活性越高，提出了氢还原后TiO2的光催化作用机制。

A three dimensional electro assisted photocatalytic system was constituted with granular TiO2 as the photocatalyst. The photocatalydc efficiency of phenol degradation was observed to be 10% and 33.6%, respectively, for common water electrolysis and photocatalysis, while it is increased to 82.8% for the combination of them i. e., the electro assisted photocatalytic system. According to the experimental results, both water electrolysis and anode bias were considered to be responsible for the electro synergism, which may effectively provide active oxygen source and prevent further recombination of photo generated charges.

A three-electrode system composed of TiO2/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 organic compounds. The photoelectrocatalytic degradation of sulfosalicylic acid (SSal) under anodic bias potential was investigated. It is shown that SSal can be degraded effectively as the external potential is increased up to 700 mV (vs SCE). The characteristics by electrochemical impedance spectroscopy (EIS) of the photoelectrocatalytic degradation of sulfosalicylic acid (SSal) was also investigated. It is shown from the EIS that the photoelectrocatalytic degradation appears to be a simple reaction on the electrode surface, suggesting that only one step of charge transfer is involved in the electrode process. The value of the resistance of charge transfer for the photoelectrocatalytic reaction of SSal manifests itself not only in the reaction rate, but also in the separation efficiency of the photogenerated electron-hole pairs. The separation efficiency of the electron-hole pairs under N2 atmosphere is higher than that under O2 atmosphere.

The photocatalytic degradation of aniline was studied in annular photoreactor, with 2 6W (EmaxD365 nm) UV lamp as light source, borosilicate glass as wave filter and titanium dioxide immobilized on porous nickel as catalysts. Parameters such as the initial concentration, flow rate, initial pH, dissolved oxygen, electrolyte, hydrogen peroxide addition, temperature and external potential bias affecting the degradation rate of aniline were studied. The results showed that photocatalysis is an effective process for the degradation of aniline. The activated energy for the photocatalytic degradation of aniline is 6.13 kJ mol-1. The initial quantum yield is 1.89% for aniline 1.10×10-4 mol l-1. Total mineralization requires a much longer illumination time than the disappearance of anilines. The external potential bias can largely improve the efficiency of photocatalytic degradation of aniline. The degradation kinetic of aniline can be described by Langmuir-Hinshelwood equation.