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Complementary behavior of doping and loading in Ag/C-ZnTa2O6 for efficient visible-light photocatalytic redox towards broad wastewater remediation.
Photochemical & Photobiological Sciences ( IF 3.1 ) Pub Date : 2020-06-12 , DOI: 10.1039/d0pp00056f
Niri Wu 1 , Ping Bai 1 , Ting Yang 1 , Hui Li 1 , Jingyu Zhang 1 , Zhanli Chai 1 , Xiaojing Wang 1
Affiliation  

This work reports on the simple fabrication of a silver loaded and carbon doped zinc tantalate (Ag/C-ZnTa2O6) photocatalyst with visible light photocatalytic activity toward broad wastewater remediation, including high photo-reduction of Cr(VI) (98.4% in 210 min), excellent photo-oxidation of tetracycline hydrochloride (94.7% in 210 min), and superior photo-degradation of multiple dyes (>99.0% within 210 min). The optimal photocatalytic performance of Ag/C-ZnTa2O6 is mainly due to the excellent visible light absorption capacity and superior electron–hole separation efficiency, which is ascribed to the complementary behavior between carbon doping and silver loading. Particularly, the generation of defects due to C-doping is greatly inhibited by Ag-loading, and the SPR effect of Ag nanoparticles is enhanced due to the obstruction of Ag+ by C doping.

中文翻译:

Ag / C-ZnTa2O6中掺杂和负载的互补行为可实现有效的可见光光催化氧化还原,从而对广泛的废水进行修复。

这项工作报告了一种简单的银负载碳掺杂钽酸锌(Ag / C-ZnTa 2 O 6)光催化剂的制备方法,该催化剂具有可见光光催化活性,可广泛处理废水,包括高光还原Cr(VI)(98.4%在210分钟内),四环素盐酸盐的出色光氧化(在210分钟内94.7%)和多种染料的出色光降解(在210分钟内> 99.0%)。Ag / C-ZnTa 2 O 6的最佳光催化性能这主要归因于出色的可见光吸收能力和出色的电子-空穴分离效率,这归因于碳掺杂和银负载之间的互补行为。特别地,由于Ag掺杂而大大抑制了由于C掺杂引起的缺陷的产生,并且由于C掺杂而阻碍了Ag +,因此增强了Ag纳米颗粒的SPR效果。
更新日期:2020-08-12
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