Surfactants-assisted preparation of BiVO4 with novel morphologies via microwave method and CdS decoration for enhanced photocatalytic properties

Zhansheng Wu; Yongtao Xue; Xiufang He; Yunfeng Li; Xia Yang; Zhilin Wu; Giancarlo Cravotto

doi:10.1016/j.jhazmat.2020.122019

Surfactants-assisted preparation of BiVO₄ with novel morphologies via microwave method and CdS decoration for enhanced photocatalytic properties

J Hazard Mater. 2020 Apr 5:387:122019. doi: 10.1016/j.jhazmat.2020.122019. Epub 2020 Jan 3.

Authors

Zhansheng Wu¹, Yongtao Xue², Xiufang He², Yunfeng Li³, Xia Yang³, Zhilin Wu⁴, Giancarlo Cravotto⁵

Affiliations

¹ School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, PR China; School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, PR China. Electronic address: wuzhans@126.com.
² School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, PR China.
³ School of Environmental and Chemical Engineering, Xi'an Polytechnic University, Xi'an, 710048, PR China.
⁴ Department of Drug Science and Technology, University of Turin, Turin, 10125, Italy.
⁵ Department of Drug Science and Technology, University of Turin, Turin, 10125, Italy; Institute of Translational Medicine and Biotechnology, Sechenov First Moscow State Medical University, Moscow, 109807, Russia.

PMID: 31927261
DOI: 10.1016/j.jhazmat.2020.122019

Abstract

The development of a highly efficient and rapid method for the accurate preparation of photocatalysts with novel morphologies is a hot research topic. The different morphologies of BiVO₄ was prepared using surfactants-assisted microwave method, and demonstrated irregular (no surfactant), octahedral (sodium dodecyl benzene sulfonate), olive-like (polyvinylpyrrolidone) and hollow structures (ethylenediaminetetraacetic acid), respectively. The BiVO₄-CdS were synthesized using the chemical-bath-deposition method with different morphologies of BiVO₄ as the substrates. The hollow structure of BiVO₄ displayed the highest photocatalytic performance. Moreover, the photodegradation rates of the hollow structure BiVO₄-CdS on tetracycline hydrochloride and ciprofloxacin were about 1.8 and 1.5 times higher than the corresponding BiVO₄, indicating that the Z-scheme heterojunction can improve the photogenerated electron pairs separation efficiency. Furthermore, the regulation mechanism of morphology and energy-band position, as produced using the surfactants, has also been thoroughly investigated in this work, which provides a novel insight into the efficient and rapid preparation of photocatalysts with special morphology and high performance.

Keywords: BiVO(4)-CdS; Microwave; Photodegradation; Surfactants; Z-scheme.

Publication types

Research Support, Non-U.S. Gov't