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2D bismuthene as a functional interlayer between BiVO4 and NiFeOOH for enhanced oxygen-evolution photoanodes
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Adv Funct Materials - 2022 - Cui - 2D Bismuthene as a Functional Interlayer between BiVO4 and NiFeOOH for Enhanced (1).pdf | Published version | 6.77 MB | Adobe PDF | View/Open |
Title: | 2D bismuthene as a functional interlayer between BiVO4 and NiFeOOH for enhanced oxygen-evolution photoanodes |
Authors: | Cui, J Daboczi, M Regue, M Chin, Y Pagano, K Zhang, J Isaacs, MA Kerherve, G Mornto, A West, J Gimenez, S Kim, J Eslava, S |
Item Type: | Journal Article |
Abstract: | BiVO4 has attracted wide attention for oxygen-evolution photoanodes in water-splitting photoelectrochemical devices. However, its performance is hampered by electron-hole recombination at surface states. Herein, partially oxidized two-dimensional (2D) bismuthene is developed as an effective, stable, functional interlayer between BiVO4 and the archetypal NiFeOOH co-catalyst. Comprehensive (photo)electrochemical and surface photovoltage characterizations show that NiFeOOH can effectively increase the lifetime of photogenerated holes by passivating hole trap states of BiVO4; however, it is limited in influencing electron trap states related to oxygen vacancies (VO). Loading bismuthene on BiVO4 photoanodes increases the density of VO that are beneficial for the oxygen evolution reaction via the formation of oxy/hydroxyl-based water oxidation intermediates at the surface. Moreover, bismuthene increases interfacial band bending and fills the VO-related electron traps, leading to more efficient charge extraction. With the synergistic interaction of bismuthene and NiFeOOH on BiVO4, this composite photoanode achieves a 5.8-fold increase in photocurrent compared to bare BiVO4 reaching a stable 3.4 (±0.2) mA cm–2 at a low bias of +0.8 VRHE or 4.7(±0.2) mA cm–2 at +1.23 VRHE. The use of 2D bismuthene as functional interlayer provides a new strategy to enhance the performance of photoanodes. |
Issue Date: | 26-Oct-2022 |
Date of Acceptance: | 1-Sep-2022 |
URI: | http://hdl.handle.net/10044/1/99622 |
DOI: | 10.1002/adfm.202207136 |
ISSN: | 1616-301X |
Publisher: | Wiley |
Start Page: | 1 |
End Page: | 12 |
Journal / Book Title: | Advanced Functional Materials |
Volume: | 32 |
Issue: | 44 |
Copyright Statement: | © 2022 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Science & Technology Physical Sciences Technology Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics 2D bismuthene BiVO (4) photoanodes co-catalysts oxygen vacancies surface states WATER OXIDATION HOLE TRANSFER STABILITY EFFICIENCY PHOTOSTABILITY NANOSTRUCTURES TEMPERATURE VACANCIES SINGLE TIO2 Materials 02 Physical Sciences 03 Chemical Sciences 09 Engineering |
Publication Status: | Published online |
Online Publication Date: | 2022-09-04 |
Appears in Collections: | Materials Physics Experimental Solid State Chemical Engineering Faculty of Natural Sciences Faculty of Engineering |
This item is licensed under a Creative Commons License