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Selective and Efficient Gd-Doped BiVO4 Photoanode for Two-Electron Water Oxidation to H2O2
Abstract
Photoelectrochemical oxidation of water presents a pathway for sustainable production of hydrogen peroxide (H 2 O 2 ). Two-electron water oxidation toward H 2 O 2, however, competes with the popular four-electron process to form oxygen and one-electron water oxidation to form OH radical. To date, bismuth vanadate (BiVO 4 ) has been shown to exhibit promising selectivity toward H 2 O 2, especially under illumination, but it suffers from high overpotential and notoriously poor stability. Herein, using density functional theory calculations, we predict that doping BiVO 4 with optimal concentrations of gadolinium (Gd) not only enhances its activity for H 2 O 2 production but also improves its stability. Experimentally, we demonstrate that intermediate amounts of Gd doping (6–12%) reduce the onset potential of BiVO 4 for H 2 O 2 production by ∼110 mV while achieving a Faradaic efficiency of ∼99.5% under illumination and prolonging the catalytic lifetime by more than a factor of 20 at 2.0 V vs RHE under illumination.
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Cites
A fast and robust algorithm for Bader decomposition of charge density
Henkelman, G., Arnaldsson, A., & Jónsson, H. (2006) · Computational Materials Science · doi:10.1016/j.commatsci.2005.04.010 · Cited by 10,723
Universality in Oxygen Evolution Electrocatalysis on Oxide Surfaces
Man, I. C., Su, H., Calle‐Vallejo, F., Hansen, H. A., Martínez, J. I., Inoglu, N. G., Kitchin, J., Jaramillo, T. F., Nørskov, J. K., & Rossmeisl, J. (2011) · ChemCatChem · doi:10.1002/cctc.201000397 · Cited by 4,769
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Cited by
Yang, W., Prabhakar, R. R., Tan, J., Tilley, S. D., & Moon, J. (2019) · Chemical Society Reviews · doi:10.1039/c8cs00997j · Cited by 787
Siahrostami, S., Villegas, S. J., Bagherzadeh Mostaghimi, A. H., Back, S., Farimani, A. B., Wang, H., Persson, K. A., & Montoya, J. (2020) · ACS Catalysis · doi:10.1021/acscatal.0c01641 · Cited by 503
Self-citationElectrochemical Synthesis of H2O2 by Two-Electron Water Oxidation Reaction
Shi, X., Back, S., Gill, T. M., Siahrostami, S., & Zheng, X. (2021) · Chem · doi:10.1016/j.chempr.2020.09.013 · Cited by 429
Self-citationPhotocatalytic and Photoelectrochemical Systems: Similarities and Differences
Wu, H., Tan, H. L., Toe, C. Y., Scott, J., Wang, L., Amal, R., & Ng, Y. H. (2020) · Advanced Materials · doi:10.1002/adma.201904717 · Cited by 394
Pulsed Laser in Liquids Made Nanomaterials for Catalysis
Forsythe, R. C., Cox, C. P., Wilsey, M. K., & Müller, A. M. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c01069 · Cited by 259
Metadata
- Authors
- Baek, J. H., Gill, T. M., Abroshan, H., Park, S., Shi, X., Nørskov, J., Jung, H. S., Siahrostami, S., & Zheng, X.
- Venue
- ACS Energy Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2019-02-15
- Volume
- 4
- Issue
- 3
- Pages
- 720-728
- ISSN
- 2380-8195 (ISSN-L)
- OpenAlex
- W2912595106
- Cited by
- 284
- References
- 2
- FWCI
- 5.05
- Type
- journal article
- Language
- en
- Open access
- closed
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- Baek, J. H., Gill, T. M., Abroshan, H., Park, S., Shi, X., Nørskov, J., Jung, H. S., Siahrostami, S., & Zheng, X. (2019). Selective and Efficient Gd-Doped BiVO4 Photoanode for Two-Electron Water Oxidation to H2O2. ACS Energy Letters. https://doi.org/10.1021/acsenergylett.9b00277
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