4.4 Article

Complementary behavior of doping and loading in Ag/C-ZnTa2O6for efficient visible-light photocatalytic redox towards broad wastewater remediation

Journal

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
Volume 19, Issue 8, Pages 1042-1053

Publisher

SPRINGERNATURE
DOI: 10.1039/d0pp00056f

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Funding

  1. National Natural Science Foundation of China [21865019, 21777078]
  2. Inner Mongolia Autonomous Region [30500-515330303]

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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-ZnTa(2)O(6)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.

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