石墨氮化碳
罗丹明B
金属
光催化
降级(电信)
碳酸铵
催化作用
铵
材料科学
兴奋剂
碳纤维
无机化学
氮化碳
模板方法模式
污染物
化学工程
化学
有机化学
纳米技术
复合材料
冶金
工程类
复合数
电信
光电子学
计算机科学
作者
Yao Xiao,Aixia Geng,Junjiang Zhu,Xiao Li Xu,Xuelian Xu
标识
DOI:10.1088/1361-6463/ac88de
摘要
Abstract A bubbling template method was used to prepare metal-doped graphitic carbon nitride (g-CN), with ammonium salts as the bubbling templates. Effects of metal types, metal loading, as well as the species and dosage of ammonium salts, on the structure, physicochemical properties and catalytic performances of g-CN were systematically investigated. Photocatalytic degradation of rhodamine B (RhB) was used as a model reaction to evaluate the catalytic performances of the materials. The results indicated that K 0.02 -CN(CA-3), which was prepared with K doping and with ammonium carbonate as the bubbling template, exhibited the best activity, with 99.7% RhB conversion obtained at 17.5 min, which is 3.2 times higher than that of g-CN. This can be attributed to the improved surface area, widened light absorption range and enhanced electron–hole separation efficiency of K 0.02 -CN(CA-3), as compared to these of g-CN. This material was also active for photo-degradation of other pollutants and has good reusability. A sketchy mechanism indicating the reactive intermediates of reaction was proposed.
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