光催化氧化法降解苯酚的研究进展

概述了二氧化钛光催化氧化反应及其用于降解苯酚的机理 ,介绍了光催化氧化反应降解苯酚的影响因素——催化剂及其固定、光催化反应装置、光的辐射时间和强度、苯酚初始浓度和溶液 p H值 ,也介绍了提高光催化反应速率的方法——贵金属的沉积、过渡金属离子的掺杂、半导体的复合 ,并且指出了光催化氧化研究在催化剂效率、光源利用等方面尚存在的问题 ,指出了设计集吸附、降解、分离于一体的复合型反应器 ,及开发太阳能源 ,并结合生化技术的研究方向

The Researches on Degradation of Phenol by Photocatalytic Oxidation Method

The mechanism of photooxidation reactions catalyted by TiO 2 and degradation of phenol with it is summarized.The influences of the selection and fixation of the catalyst,the device of the photocatalytic reactions,the time and intensity of the irradiation,the initial concentration of phenol and pH value of the solution on the degradation of phenol with the photocatalytic oxidation reactions are introduced.The methods such as the deposition of noble metals,the adulteration of transition metal ions,and the compounding of semiconductors to raise the rate of photocatalytic reactions are briefed.The questions in the researches on the photocatalytic oxidation in the efficiency of catalyst and the use of photosource are pointed out.The direction of the researches in the design of the reactor that integrates adsorption,degradation,and separation to tap solar energy,with the use of biochemical techniques,is put forward.