CdS-based artificial leaf for photocatalytic hydrogen evolution and simultaneous degradation of biological wastewater

Yingying Fan; Ruijie Yang; Rongshu Zhu; Heng Zhao; Qingye Lu; Zhangxing Chen; Jinguang Hu

doi:10.1016/j.chemosphere.2022.134713

CdS-based artificial leaf for photocatalytic hydrogen evolution and simultaneous degradation of biological wastewater

Chemosphere. 2022 Aug:301:134713. doi: 10.1016/j.chemosphere.2022.134713. Epub 2022 Apr 26.

Authors

Yingying Fan¹, Ruijie Yang¹, Rongshu Zhu², Heng Zhao³, Qingye Lu³, Zhangxing Chen⁴, Jinguang Hu⁵

Affiliations

¹ State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, PR China; Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada.
² State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, PR China. Electronic address: rszhu@hit.edu.cn.
³ Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada.
⁴ Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada. Electronic address: zhachen@ucalgary.ca.
⁵ Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, Alberta, T2N 1N4, Canada. Electronic address: jinguang.hu@ucalgary.ca.

PMID: 35487350
DOI: 10.1016/j.chemosphere.2022.134713

Abstract

Rational design of all-solid-state Z-scheme heterojunction with advanced structure is essential for boosting photocatalytic efficiency. Herein, we design and fabricate a novel Z-scheme photocatalyst with leaf architecture (named artificial leaf) via a simple dipping-calcination (DC) process followed by a successive ionic layer adsorption and reaction (SILAR) strategy. The prepared artificial leaf, composing of CdS, InVO₄, and BiVO₄, holds advanced leaf-like structure and Z-scheme electron transfer pathway. As a result, this novel artificial leaf exhibits outstanding capability for the harvesting of visible light and superior efficiency for the separation of photogenerated electron-hole pairs, as well as remarkably enhanced photocatalytic performance and stability for H₂ evolution (with the rate of 5033 μm g^-1∙h^-1) and pollution degradation (46% pollution can be degraded within 3 h).

Keywords: Artificial leaf; BiVO4; CdS; InVO4; Z-scheme heterojunction.

MeSH terms

Catalysis
Hydrogen*
Light
Wastewater*

Substances

Waste Water
Hydrogen