Enhanced piezocatalytic hydrogen evolution performance of bismuth vanadate by the synergistic effect of facet engineering and cocatalyst engineering

Daiming Liu; Jintao Zhang; Lining Tan; Chengchao Jin; Ming Li; Bingbing Chen; Guodong Zhang; Yongtao Zhang; Fei Wang

doi:10.1016/j.jcis.2023.05.040

Enhanced piezocatalytic hydrogen evolution performance of bismuth vanadate by the synergistic effect of facet engineering and cocatalyst engineering

J Colloid Interface Sci. 2023 Sep 15:646:159-166. doi: 10.1016/j.jcis.2023.05.040. Epub 2023 May 10.

Authors

Daiming Liu¹, Jintao Zhang², Lining Tan², Chengchao Jin³, Ming Li⁴, Bingbing Chen⁵, Guodong Zhang², Yongtao Zhang², Fei Wang⁶

Affiliations

¹ College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao 266061, P. R. China; State Key Laboratory of Bio-Fibers and Eco-Textiles, Qingdao university, Qingdao 266071, P. R. China.
² College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao 266061, P. R. China.
³ School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, P. R. China; Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, P. R. China. Electronic address: ccjin_cn@163.com.
⁴ State Key Laboratory of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China.
⁵ School of Energy Science and Engineering, Nanjing Tech University, Nanjing 211816, P. R. China.
⁶ College of Electromechanical Engineering, Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials, Qingdao University of Science and Technology, Qingdao 266061, P. R. China. Electronic address: elliot_wang@qust.edu.cn.

PMID: 37187049
DOI: 10.1016/j.jcis.2023.05.040

Abstract

Developing piezocatalysts with excellent piezocatalytic hydrogen evolution reaction (HER) performance is highly desired but also challenging. Here, facet engineering and cocatalyst engineering are employed to synergistically improve the piezocatalytic HER efficiency of BiVO₄ (BVO). Monoclinic BVO catalysts with distinct exposed facets are synthesized by adjusting pH of hydrothermal reaction. The BVO with highly exposed {110} facet exhibits a superior piezocatalytic HER performance (617.9 μmol g^-1h^-1) compared with that with {010} facet, owing to the strong piezoelectric property, high charge transfer efficiency, and excellent hydrogen adsorption/desorption capacity. The HER efficiency is enhanced by 44.7% by selectively depositing cocatalyst of Ag nanoparticles specifically on the reductive {010} facet of BVO, where the Ag-BVO interface provides the directional electron transport for high-efficiency charge separation. Under the collaboration between cocatalyst of CoO_x on {110} facet and the hole sacrificial agent of methanol, the piezocatalytic HER efficiency is evidently enhanced by 2 times because CoO_x and methanol can impede the water oxidation and improve the charge separation. This easy and simple strategy provides an alternative perspective on designing high-performance piezocatalysts.

Keywords: BiVO(4); Cocatalyst; Facet engineering; Hydrogen evolution; Piezocatalysis.