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Photoelectrodes Based upon Mo:BiVO₄ Inverse Opals for Photoelectrochemical Water Splitting

Zhou, M; Bao, J; Xu, Y; Zhang, J; Xie, J; Guan, M; Wang, C; ... Xie, Y; + view all (2014) Photoelectrodes Based upon Mo:BiVO₄ Inverse Opals for Photoelectrochemical Water Splitting. ACS Nano , 8 (7) pp. 7088-7098. 10.1021/nn501996a. Green open access

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Abstract

BiVO4 has been regarded as a promising material for photoelectrochemical water splitting, but it suffers from a major challenge on charge collection and utilization. In order to meet this challenge, we design a nanoengineered three-dimensional (3D) ordered macro-mesoporous architecture (a kind of inverse opal) of Mo:BiVO4 through a controllable colloidal crystal template method with the help of a sandwich solution infiltration method and adjustable post-heating time. Within expectation, a superior photocurrent density is achieved in return for this design. This enhancement originates primarily from effective charge collection and utilization according to the analysis of electrochemical impedance spectroscopy and so on. All the results highlight the great significance of the 3D ordered macro-mesoporous architecture as a promising photoelectrode model for the application in solar conversion. The cooperating amplification effects of nanoengineering from composition regulation and morphology innovation are helpful for creating more purpose-designed photoelectrodes with highly efficient performance.

Type: Article
Title: Photoelectrodes Based upon Mo:BiVO₄ Inverse Opals for Photoelectrochemical Water Splitting
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/nn501996a
Publisher version: https://doi.org/10.1021/nn501996a
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: solar water splitting, bismuth vanadate, composition regulation, morphology innovation, template
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: https://discovery.ucl.ac.uk/id/eprint/10076436
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