摘要
以碱性染料结晶紫为目标污染物,金属卤化物灯为可见光光源,研究了自制的“Cu核-Cu2O壳”微粒的光催化性能。实验结果表明,该催化剂对可见光有良好的响应,当固液比为1∶500,光照120 min,质量浓度为60 mg/L的结晶紫溶液色度和COD去除率分别达98%和92%。检测结果表明,光催化过程中有氢氧自由基产生,染料发生了彻底的降解。
The photocatalytic properties of “Cu core and Cu2O shell” type of catalyst have been studied with crystal violet as model pollutant to degrade and a metallic halide lamp as a visible light source. The results showed that this new catalyst was highly responsive to visible light. When with 2 g/L of catalyst powder, 60 mg/L of crystal violet concentration, 120 rain of irradiation with visible light resource, and 1:500 of solid to liquid ratio, the decolorization rate of crystal violet and COD removal rate can be more than 98% and 92% , respectively. Hydroxyl radicals can be detected during the photocatalytic degradation process,and those radicals induced dye to degrade completely,as the results indicated.
出处
《现代化工》
EI
CAS
CSCD
北大核心
2005年第11期38-40,42,共4页
Modern Chemical Industry
基金
广西青年科学基金资助项目(桂科青0542002)
关键词
氧化亚铜
可见光
光催化剂
结晶紫
cuprous oxide
visible light
photocatalyst
crystal violet