光催化
煅烧
石墨氮化碳
材料科学
亚甲蓝
催化作用
可见光谱
降级(电信)
氮化碳
化学工程
吸收(声学)
核化学
无机化学
化学
有机化学
复合材料
电信
光电子学
计算机科学
工程类
作者
Yawen Fei,Ning Han,Minghui Zhang,Yang Fei-xue,Xiaoyan Yu,Lilong Shi,Alireza Khataee,Wei Zhang,Dongping Tao,Man Jiang
出处
期刊:Chemosphere
[Elsevier]
日期:2022-11-01
卷期号:307: 135718-135718
被引量:5
标识
DOI:10.1016/j.chemosphere.2022.135718
摘要
The graphite-phase carbon nitride (g-C3N4) photocatalytic materials were prepared by one-step calcination method to degrade methylene blue (MB) and potassium butyl xanthate (PBX) under visible light irradiation. The prepared g-C3N4 photocatalytic materials were investigated in detail by various characterizations, and the experiments showed that the graphitic phase carbon nitride photocatalytic materials were successfully prepared by the one-step calcination method. The material possesses excellent optical properties and strong visible light absorption, thus achieving photocatalytic degradation of MB and PBX. The catalyst dosage, pH, the initial concentration of pollutants have important effects on photocatalytic activity of MB and PBX. The photocatalytic degradation efficiency was 98.99% for MB and 96.83% for PBX under the optimal conditions (catalyst dosage, initial pollutant concentration and pH value were 500 mg L-1, 20 mg L-1 and 7, respevtively). The photocatalytic mechanisms on MB and PBX were elucidated. ·OH was the key specie for MB, while ·O2- was the key specie for PBX. This study advances the development of photocatalytic technology for mineral wastewater.
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