Full-spectrum responsive photocatalytic activity via non-noble metal Bi decorated mulberry-like BiVO4

Bi, Yaxin and Yang, Yanling and Shi, Xiao-Lei ORCID: https://orcid.org/0000-0003-0905-2547 and Feng, Lei and Hou, Xiaojiang and Ye, Xiaohui and Zhang, Li and Suo, Guoquan and Lu, Siyu and Chen, Zhi-Gang ORCID: https://orcid.org/0000-0002-9309-7993 (2021) Full-spectrum responsive photocatalytic activity via non-noble metal Bi decorated mulberry-like BiVO4. Journal of Materials Science & Technology, 83. pp. 102-112. ISSN 1005-0302


Abstract

Due to its appropriate bandgap (∼2.4 eV) and efficient light absorption, bismuth vanadate (BiVO4) shows promising photocatalysis activity. However, the charge carrier recombination and poor electron transmission often induce poor photocatalytic performance. Herein, we report a new method to in-situ synthesize non-noble metal Bi decorated mulberry-like BiVO4 by a two-step calcination process. Comprehensive characterizations reveal that non-noble metal Bi nanoparticles grown in-situ on BiVO4 result in the red-shift of the absorbance edge, greatly extending the light absorption from the ultraviolet into the near-infrared region. The surface plasmon resonance excitation of Bi nanoparticles and synergetic effects between Bi and BiVO4 effectively improve the photocatalytic efficiency and promote the separation of photoinduced electron-hole pairs in mulberry-like BiVO4. Density functional theory (DFT) calculation results further verify that the electrons are transferred from Bi to BiVO4 and the formation of •OH radical in Bi/BiVO4 is attributed to the lower simulated free energy, which supports our experimental outcomes. This work provides a novel strategy to enhance light absorption and promote efficient solar utilization of photocatalysts for practical applications.


Statistics for USQ ePrint 41009
Statistics for this ePrint Item
Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 01 Feb 2021 23:49
Last Modified: 23 Jun 2021 07:17
Uncontrolled Keywords: BiBiVO4; Photocatalysis; Full-spectrum; Density functional theory
Fields of Research (2008): 09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Fields of Research (2020): 40 ENGINEERING > 4016 Materials engineering > 401605 Functional materials
Identification Number or DOI: https://doi.org/10.1016/j.jmst.2020.11.079
URI: http://eprints.usq.edu.au/id/eprint/41009

Actions (login required)

View Item Archive Repository Staff Only