孙强强;王书民;周春生;

• 1:陕西省尾矿资源综合利用重点实验室(商洛学院)

摘要(Abstract)：

以均匀沉淀结合微波法制得掺入(Ag、Sn、Al)的改性纳米ZnO粉体。以掺Ag纳米ZnO为光催化剂,研究其对水体中甲醛的光催化降解作用,探讨光催化降解的过程与性质,并对其降解工艺进行优化。结果表明:当以1.0g掺Ag纳米ZnO为光催化剂,对初始质量浓度为10mg/L的甲醛进行紫外光解2.5h时,甲醛的降解率可达86.7%;在模拟可见光下,掺Ag纳米ZnO对甲醛的降解率可达54.2%。甲醛的降解历程推测可能为ZnO光催化降解甲醛溶液时,活性羟基自由基(·OH)起氧化作用,先将甲醛氧化为羧酸,最终完全降解为CO2和H2O。

关键词(KeyWords)： 光催化降解;纳米ZnO;甲醛;模拟可见光

Abstract:

Keywords:

基金项目(Foundation): 陕西省科技统筹创新工程项目(地方重大专项)(2012KTDZ02-02)

作者(Author): 孙强强;王书民;周春生;

Email:

DOI: 10.14024/j.cnki.1004-244x.20150729.004

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