摘要：

研究了在不同反应条件下以自制锐钛矿型的掺铁TiO₂晶体粉末对苯乙酮的光催化降解的动力学过程。结果表明:可见光照射下,在苯乙酮溶液质量浓度为0.8g/L、溶液调节为碱性(pH≥10)、自制TiO₂催化剂(掺摩尔分数为5%的Fe³⁺)的质量浓度为1.6g/L、室温的条件下,苯乙酮的光催化降解的表观反应速率常数k最大,拟合可见光下铁掺杂TiO₂降解苯乙酮为一级反应。

关键词: 铁掺杂TiO₂, 光催化降解, 苯乙酮

Abstract:

The kinetics course of the photocatalytic degradation process of acetophenone with home-made irondoped TiO₂ crystal powder has been studied under different conditions.Experimental results show that under visible light radiation,the apparent propagation rate constant k of the photocatalytic degradation of acetophenone are the highest,when the solution mass concentration of acetophenone is 0.8 g/L,regulated solution is alkaline(pH≥10),home-made catalyst(doped mole fraction is 5%) whose mass concentration of Fe³⁺ is 1.6 g/L and isothermal reaction time at room temperature.Under fitted visible light,the photocatalytic degradation of acetophenone with iron-doped TiO₂ is of first class reaction.

Key words: iron-doped TiO₂, photocatalytic degradation, acetophenone

中图分类号: 

• X703.1