Understanding photoelectrocatalytic degradation of tetracycline over three-dimensional coral-like ZnO/BiVO4 nanocomposite

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Yaping Li
  • Xianglin Sun
  • Yiming Tang
  • Lintao Li
  • Feng Jiang
  • Jing Wang
  • Weirui Chen
  • Laisheng Li

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number124871
Journal / PublicationMaterials Chemistry and Physics
Volume271
Online published23 Jun 2021
Publication statusPublished - 1 Oct 2021

Abstract

The coral-like BiVO4 was successfully constructed on ZnO nanorods grown on FTO substrates to reveal exceptional photoinduced charge migration kinetics as well as the underlying photoelectrocatalytic degradation process. The orderly ZnO nanorods array accelerated the separation of photogenerated carriers, while the three-dimensional coral structure of ZnO/BiVO4 nanocomposite increased the efficiency of light absorption and mass transfer, thus improving the photoelectrochemical properties. Fine interfacial contact between ZnO and BiVO4 led to the optimized photoelectrochemical performance with a photocurrent density of 0.29 mA/cm2 at 0 V vs. Ag/AgCl under visible light illumination (λ ≧ 420 nm), which was 3.2 times, 1.6 times of that of pristine ZnO and BiVO4. Moreover, the photoelectrocatalytic degradation efficiency of tetracycline from the ZnO/BiVO4 nanocomposite on was c. a. 84.5% and the main degradation paths were analyzed by LC-MS. Radical scavengers were employed to evaluate the capability to produce O2 and OH active species upon visible light illumination. This study elucidated the reaction mechanisms of the ZnO/BiVO4 nanocomposite during the photoelectrocatalytic degradation process.

Research Area(s)

  • EPR, Photoelectrocatalysis, Tetracycline, Three-dimensional, Visible light

Citation Format(s)

Understanding photoelectrocatalytic degradation of tetracycline over three-dimensional coral-like ZnO/BiVO4 nanocomposite. / Li, Yaping; Sun, Xianglin; Tang, Yiming; Ng, Yun Hau; Li, Lintao; Jiang, Feng; Wang, Jing; Chen, Weirui; Li, Laisheng.

In: Materials Chemistry and Physics, Vol. 271, 124871, 01.10.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review