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利用光化学还原法制备了Ag/AgCl壳-核结构的复合纳米粒子,以亚甲基蓝为模型降解物,研究了其可见光催化性能。结果表明,壳-核结构的Ag/AgCl纳米材料具有表面等离子效应,提高了其对可见光吸收和光催化活性。在可见光照射下,亚甲基蓝溶液浓度为10 mg·L~(-1),催化剂用量10 mg·L~(-1),光照60 min,亚甲基蓝降解率达95%,COD去除率为92%。
The composite nanoparticles with Ag / AgCl shell-core structure were prepared by photochemical reduction method and the visible light photocatalytic activity was studied by using methylene blue as a model degradation product. The results show that the shell-core Ag / AgCl nanomaterials have the surface plasmon effect and enhance the visible light absorption and photocatalytic activity. Under the irradiation of visible light, the methylene blue solution concentration was 10 mg · L -1, the catalyst dosage was 10 mg · L -1, the degradation rate of methylene blue was 95% and the COD removal rate was 92% under light irradiation for 60 min.