Synergetic effect of dual co-catalysts on the activity of BiVO4 for photocatalytic carbamazepine degradation

被引：16
作者：
Wang, Beibei [1 ]
Li, Ping [2 ]
Du, Chunlei [2 ]
Wang, Yan [2 ]
Gao, Daxin [2 ]
Li, Songtao [2 ]
Zhang, Liying [2 ]
Wen, Fuyu [2 ]
机构：
[1] Chengde Med Univ, Educ Technol Ctr, Chengde 067000, Peoples R China
[2] Chengde Med Univ, Hebei Key Lab Res & Dev Tradit Chinese Med, Chengde 067000, Peoples R China
来源：
RSC ADVANCES | 2019年 / 9卷 / 71期
基金：
中国国家自然科学基金;
关键词：
GRAPHENE OXIDE NANOCOMPOSITES; EFFICIENT DEGRADATION; CHARGE SEPARATION; WATER; PHOTODEGRADATION; PHARMACEUTICALS; OXIDATION; REMOVAL; TIO2; CONTAMINANTS;
D O I：
10.1039/c9ra07152k
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
An efficient visible-light driven three components photocatalyst for carbamazepine (CBZ) degradation has been assembled by co-loading reduction cocatalyst Pt and oxidation cocatalyst Co3O4 (MnOx) on BiVO4. The apparent rate constant of the three components photocatalyst Pt/BiVO4/Co3O4 for degradation of CBZ is 54 times that of Co3O4/BiVO4 and 2.5 times that of Pt/BiVO4, which shows a synergetic effect in the photocatalytic activity. The same synergetic effect is also observed for Pt/BiVO4/MnOx. The spatial separation of the reduction and oxidation cocatalysts could reduce the recombination of the photogenerated charges, which mainly accounts for the high photocatalytic activity of the three components photocatalyst. The photocatalytic intermediates of CBZ were detected by HPLC-ESI-MS, and a deductive degradation pathway of CBZ was proposed.
引用
收藏
页码：41977 / 41983
页数：7
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