中文摘要：

以MoO3为光催化剂，丙酮为光敏荆，研究了甲基橙模拟废水的光催化降解反应，并进行了动力学初步研究．结果表明：MoO3对甲基橙模拟废水的光催化降解具有良好的催化活性，其光催化反应速率常数k=10．31mg·L^-1·min^-1．加入丙酮后，丙酮的光诱导作用强化了MoO3的光催化氧化过程，使甲基橙的降解速度加快．动力学研究表明，甲基橙模拟废水的降解速率r与时间t的关系：r=2．33-0．14t-0．024t^2＋0．0026t^3-9×10^-5t^4＋1×10^-6t^5 -6×10^-9t^6．

英文摘要：

In this paper, using the semiconductor catalyst MoO3 and photosensitizer acetone on photocatalytic degradation of methyl orange and its kinetics were investigated. The semiconductor catalyst MoO3 performance showed good effect and photocatalytic degradation constant rate was 10. 31 mg· L^-1·min^-1. Adding trace quantity of photosensitizer acetone simultaneously, degradation rate of methyl orange on MoO3 catalysts was in- creased. Under MoO3 catalysis and the acetone photosensitization, a rate equation of：r=2.33-0.14t-0.024t^2＋0.0026t^3-9×10^-5t^4＋1×10^-6t^5 -6×10^-9t^6. for photocatalytic reaction was obtained.