钒搀杂对TiO2光催化降解含酚溶液性能影响初探

采用溶胶凝胶法制备一系列不同钒掺杂量的TiO_2光催化剂,应用XRD、TEM手段和光催化反应装置研究了TiO_2光催化剂的结构及其苯酚光催化降解活性。结果表明,催化剂的组成、结构和粒子大小对苯酚光催化降解活性有较大的影响,随着钒掺杂量的增加,TiO_2的光催化活性先逐渐升高,V_2O_5掺杂质量分数为3％时光催化活性最好,V_2O_5掺杂质量分数超过3％时光催化活性逐渐降低。

Effect of TiO2 Doping with Vanadium on Phenol Photolytic Activity

Vanadium mental - ion - doped TiO2 samples are prepared by sol - gel process . The structure and phenol photolytic activity have been studied by means of XRD, TEM and photolytic reactor tests. It has been shown that the structure , composition and particle size of the samples exert influences on the phenol photolytic activity. Increasing vanadium pentoxide in the samples , the photolytic activity for degrading phenol increases firstly and reaches the maximum at the point of 3 % , and then decreases remarkably when it is over 3 % .