Review on nanoscale Bi-based photocatalysts

Rongan HE, Difa XU, Bei CHENG, Jiaguo YU, Wing Kei HO

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Abstract

Nanoscale Bi-based photocatalysts are promising candidates for visible-light-driven photocatalytic environmental remediation and energy conversion. However, the performance of bulk bismuthal semiconductors is unsatisfactory. Increasing efforts have been focused on enhancing the performance of this photocatalyst family. Many studies have reported on component adjustment, morphology control, heterojunction construction, and surface modification. Herein, recent topics in these fields, including doping, changing stoichiometry, solid solutions, ultrathin nanosheets, hierarchical and hollow architectures, conventional heterojunctions, direct Z-scheme junctions, and surface modification of conductive materials and semiconductors, are reviewed. The progress in the enhancement mechanism involving light absorption, band structure tailoring, and separation and utilization of excited carriers, is also introduced. The challenges and tendencies in the studies of nanoscale Bi-based photocatalysts are discussed and summarized. Copyright © 2018 The Royal Society of Chemistry.
Original languageEnglish
Pages (from-to)464-504
JournalNanoscale Horizons
Volume3
Issue number5
DOIs
Publication statusPublished - Sep 2018

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Photocatalysts
Surface treatment
Heterojunctions
Semiconductor materials
Conductive materials
Nanosheets
Energy conversion
Stoichiometry
Band structure
Light absorption
Absorption spectra
Solid solutions
Doping (additives)

Citation

He, R., Xu, D., Cheng, B., Yu, J., & Ho, W. (2018). Review on nanoscale Bi-based photocatalysts. Nanoscale Horizons, 3(5), 464-504. doi: 10.1039/c8nh00062j