光催化
催化作用
材料科学
甲基橙
可见光谱
吸附
亚甲蓝
降级(电信)
热液循环
苯酚
光化学
纳米颗粒
异质结
吸收(声学)
化学工程
纳米技术
化学
有机化学
复合材料
光电子学
计算机科学
工程类
电信
作者
Huiyong Li,Zemin Zheng,Mofan Liu,Hao Jiang,Dafeng Hu,Xudong Zhang,Lei Xia,Xuemin Geng,Jiangwei Lu,Xinran Cheng,Yanfen Wan,Peng Yang
标识
DOI:10.1016/j.apsusc.2020.145468
摘要
A novel Pd nano-skeleton (Pd NSs) modified Bi2MoO6 balls photocatalyst was prepared by a facile hydrothermal treatment. The characterization by multiple techniques demonstrated the excellent light absorption and effective photo-generated electron-hole pairs separation performance of the composite catalyst, which further proved its superior photocatalytic property. Compared to the pure Bi2MoO6 nanosheets, carbon quantum dots (CQDs) modified Bi2MoO6 balls and Pd nanoparticles (Pd NPs) modified Bi2MoO6 balls catalysts, 1.3% Pd [email protected]2MoO6 sample exhibited the optimal catalytic performance for removing methyl orange (MO), methylene blue (MB), K2Cr2O7, phenol and the simulated wastewater mixture formed by the first three above under the illumination of visible light. Above all, the degradation efficiency increased about 5 times that of the pure Bi2MoO6 balls for the degradation of MO. This great improvement was mainly attributed to Pd NSs with many contact edges, which provided more active sites for the adsorption reaction of organic dye molecules, following its better near-infrared light absorption capacity in the catalytic system. The active species mainly involved in the reaction were verified by ESR technique and the trapping test, mainly involving O2−, holes, OH, etc., and a possible photocatalytic reaction mechanism and pollutant degradation pathway were also proposed.
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