研制了一种石墨相氮化碳/三聚氯氰(g-C3N4/C3Cl3N3)复合型光催化剂.由于该催化剂在g-C3N4的基础上有效拓展了π共轭体系,同时引入氯原子,使带隙位置上移,改善了光生电荷的还原能力,在可见光照射下,能有效降解有机污染物.实验结果表明,20 min内对RR染料废水的降解率达94.7％,重复使用5次后,降解率仍达94％.通过在降解体系中加入氧化性活性物种捕获剂的方法,研究了g-C3N4/C3Cl3 N3吸收可见光降解有机污染物的机理.
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