Steel slag source-derived FeOOH for enhanced BiVO4 photoelectrochemical water splitting

Pengliang Chen; Shiming Zhong; Xingxing Cheng; Zhiqiang Wang; Xuetao Wang; Baizeng Fang

doi:10.1016/j.jcis.2023.11.033

Steel slag source-derived FeOOH for enhanced BiVO₄ photoelectrochemical water splitting

J Colloid Interface Sci. 2024 Feb:655:417-426. doi: 10.1016/j.jcis.2023.11.033. Epub 2023 Nov 7.

Authors

Pengliang Chen¹, Shiming Zhong², Xingxing Cheng³, Zhiqiang Wang², Xuetao Wang⁴, Baizeng Fang⁵

Affiliations

¹ National Engineering Lab for Coal-fired Pollutant Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China; Shandong Xinguang Energy Saving Technology Co, 300 Changjiang Road, Yantai, Shandong Province, China.
² National Engineering Lab for Coal-fired Pollutant Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China.
³ National Engineering Lab for Coal-fired Pollutant Emission Reduction, School of Energy and Power Engineering, Shandong University, Jinan 250061, China. Electronic address: xcheng@sdu.edu.cn.
⁴ Energy and Power Engineering Institute, Henan University of Science and Technology, Luoyang, Henan 471003, China.
⁵ School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan 523808, Guangdong, China. Electronic address: baizengfang@163.com.

PMID: 37948815
DOI: 10.1016/j.jcis.2023.11.033

Abstract

Green, healthy, and sustainable energy development has always been the cornerstone of global energy development. In this study, industrial waste steel slag was utilized as the raw material, and FeOOH was loaded onto a BiVO₄ surface using the impregnation method. The optimized photoanode exhibited a lower onset potential and higher surface activity, achieving a current density of 3.08 mA/cm² at 1.23 V vs. RHE, and dramatically enhancing the oxygen and hydrogen production efficiencies of the entire system. The incorporation of FeOOH from a steel slag source improves the photoelectrochemical (PEC) water splitting capacity and broadens the steel slag utilization pathways for more economical and green energy use. This study combines the high value-added utilization of solid waste with the field of PEC, presenting a novel approach.

Keywords: BiVO(4); Co-catalyst; Photoanode; Photoelectrochemical water splitting; Steel slag source-derived FeOOH.