Recent Advances in Bismuth‐Based Nanomaterials for Photoelectrochemical Water Splitting

In recent years, bismuth‐based nanomaterials have drawn considerable interest as potential candidates for photoelectrochemical (PEC) water splitting owing to their narrow band gaps, nontoxicity, and low costs. The unique electronic structure of bismuth‐based materials with a well‐dispersed valence b...

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Bibliographic Details
Published in:ChemSusChem 2017-08, Vol.10 (15), p.3001-3018
Main Authors: Bhat, Swetha S. M., Jang, Ho Won
Format: Article
Language:English
Subjects:
Bismuth
Bismuth - chemistry
Catalysts
Electrochemistry
Electronic structure
Heterojunctions
Nanomaterials
Nanostructure
nanostructures
Nanostructures - chemistry
Nanotechnology - methods
photoanode
Photochemical Processes
Sunlight
Valence band
Water - chemistry
Water heaters
Water splitting
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Summary:In recent years, bismuth‐based nanomaterials have drawn considerable interest as potential candidates for photoelectrochemical (PEC) water splitting owing to their narrow band gaps, nontoxicity, and low costs. The unique electronic structure of bismuth‐based materials with a well‐dispersed valence band comprising Bi 6s and O 2p orbitals offers a suitable band gap to harvest visible light. This Review presents significant advancements in exploiting bismuth‐based nanomaterials for solar water splitting. An overview of the different strategies employed and the new ideas adopted to improve the PEC performance of bismuth‐based nanomaterials are discussed. Morphology control, the construction of heterojunctions, doping, and co‐catalyst loading are several approaches that are implemented to improve the efficiency of solar water splitting. Key issues are identified and guidelines are suggested to rationalize the design of efficient bismuth‐based materials for sunlight‐driven water splitting. Lickety‐split: Bismuth‐based nanomaterials are promising candidates for sunlight‐driven water splitting, as they possess a unique band structure that facilitates visible‐light absorption. In this Review, significant advancements in exploiting bismuth‐based nanomaterials for solar water splitting are summarized and an overview is provided of the different strategies employed and the new ideas adopted to improve the performance of these materials.
ISSN:1864-5631
1864-564X
DOI:10.1002/cssc.201700633