摘要
以１２５ Ｗ 高 压汞灯 为光源，以 Ｔｉ Ｏ２ 为 催化剂，对 不同初 始浓度的 苯酚水溶 液进 行了 光催化降解 实验； 同时，考 察了不同 溶液ｐ Ｈ 值时的 光催 化行 为． 根据 实验 结果， 提出 了与 文献 报 道不同的 Ｔｉ Ｏ２ 光催 化降解苯 酚的零级 反应动
The photocatalytic degradation of phenol with different initial concentration by titanium dioxide suspension has been investigated under irradiation of 125 W high pressure mercury lamp. The photocatalytic reaction was also examined under different pH values. The experimental results indicated that the apparent rate constant K of the photocatalytic degradation of phenol was related to the initial concentration and the pH value of the phenol solution. The apparent rate constant K linearly increased with increasing the initial phenol concentration and with increasing the pH value up to 9. Based on the experimental results, a zero order kinetic model was proposed, being different from that reported in literatures.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
1999年第3期301-304,共4页
基金
中国科学院重大项目
关键词
二氧化钛
苯酚
光催化
降解
纳米级
titanium dioxide, phenol, photocatalysis, degradation, kinetic model
