纳米ZnO光催化降解甲基橙研究  

Photocatalytic Degradation of Methyl Orange using Nanocrystalline ZnO

作　　者：李秀艳[1] 刘平安[1] 曾令可[1] 王慧[1] 税安泽[1] 刘艳春[1] 

机构地区：[1]华南理工大学材料学院,广东广州510640

出　　处：《分析测试学报》2007年第1期38-41,共4页Journal of Instrumental Analysis

基　　金：国家自然科学基金资助项目(50276017);广东省自然科学基金资助项目(04020035)

摘　　要：以ZnSO4.7H2O和Na2CO3为原料,采用沉淀法制备纳米ZnO粉体。以甲基橙为研究对象,高压汞灯(主波长365nm)为光源,研究了催化剂用量、甲基橙初始浓度、光强度、电解质(Cl-、SO42-、NO3-)及pH值等对甲基橙降解率的影响。The photocatalyst, nanocrystalline ZnO were prepared by precipitation method with ZnSO4 · 7H2O and Na2CO3 as raw materials. Experiments were carried out using methyl orange as the pollutant object to evaluate the photocatalytic activity of nanocrystalline ZnO. A high-pressure mercury lamp with wavelength at 365 nm was used as the energy source for the photocatalytic experiments. The effects of catalyst loading, initial methyl orange concentration, light intensity, electrolyte （Cl^-, SOn^2- , NO3^- ） and pH on the degree of photodegradation have been investigated.

关 键 词：光催化 降解 纳米ZNO 甲基橙 

分 类 号：TQ032.4[化学工程] TG115.23[金属学及工艺—物理冶金]