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Electronic Structure Modulation of RuO2 by TiO2 Enriched with Oxygen Vacancies to Boost Acidic O2 Evolution
Abstract
RuO 2 is the most efficient material reported so far for acidic oxygen evolution reaction (OER), yet suffering from insufficient stability in practical water-splitting operations. Targeting on this issue, herein we report an electronic structure modulating strategy by dispersing RuO 2 over defective TiO 2 enriched with oxygen vacancies (RuO 2 /D-TiO 2 ). Synergetic (spectro-)electrochemistry and theoretical simulations reveal a continuous band structure at the interface between RuO 2 and defective TiO 2, as well as a lowered energetic barrier for *OOH formation, which are accountable for the largely enhanced acidic OER kinetics. As a result, the as-prepared RuO 2 /D-TiO 2 catalyst exhibits a low overpotential of 180 mV at 10 mA cm –2, a low cell voltage of 1.84 V at 2 A cm –2, and a long lifetime above 100 h at 200 mA cm –2, providing hints for a more robust acidic OER catalyst design.
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What would it take for renewably powered electrosynthesis to displace petrochemical processes?
De Luna, P., Hahn, C., Higgins, D., Jaffer, S. A., Jaramillo, T. F., & Sargent, E. H. (2019) · Science · doi:10.1126/science.aav3506 · Cited by 3,052
Subsurface Oxygen in Oxide-Derived Copper Electrocatalysts for Carbon Dioxide Reduction
Eilert, A., Cavalca, F., Roberts, F. S., Osterwalder, J., Liu, C., Favaro, M., Crumlin, E. J., Ogasawara, H., Friebel, D., Pettersson, L. G. M., et al. (2017) · The Journal of Physical Chemistry Letters · doi:10.1021/acs.jpclett.6b02273 · Cited by 443
Tian, Y., Wang, S., Velasco, E., Yang, Y., Cao, L., Zhang, L., Li, X., Lin, Y., Zhang, Q., & Chen, L. (2020) · iScience · doi:10.1016/j.isci.2019.100756 · Cited by 246
Li, W.-Q., Zhou, R.-Y., Wang, X.-T., Hu, L.-Y., Chen, X., Guan, P.-C., Zhang, X.-G., Zhang, H., Dong, J.-C., Tian, Z.-Q., et al. (2021) · Journal of Catalysis · doi:10.1016/j.jcat.2021.06.017 · Cited by 61
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Cited by
Construction of Zn-doped RuO2 nanowires for efficient and stable water oxidation in acidic media
Zhang, D., Li, M., Yong, X., Song, H., Waterhouse, G. I. N., Yi, Y., Xue, B., Zhang, D., Liu, B., & Lu, S. (2023) · Nature Communications · doi:10.1038/s41467-023-38213-1 · Cited by 380
Song, H., Yong, X., Waterhouse, G. I. N., Yu, J., Wang, H., Cai, J., Tang, Z., Yang, B., Chang, J., & Lu, S. (2024) · ACS Catalysis · doi:10.1021/acscatal.3c06182 · Cited by 280
Zhao, G., Guo, W., Shan, M., Fang, Y., Wang, G., Gao, M., Liu, Y., Pan, H., & Sun, W. (2024) · Advanced Materials · doi:10.1002/adma.202404213 · Cited by 143
Caprì, A., Martínez-Lázaro, A., Béjar, J., Gatto, I., Álvarez-Contreras, L., Gurrola, M. P., Ledesma-García, J., Baglio, V., & Arriaga, L. G. (2023) · Electrochimica Acta · doi:10.1016/j.electacta.2023.142851 · Cited by 12
Metadata
- Authors
- Wang, X., Wan, X., Qin, X., Chen, C., Qian, X., Guo, Y., Xu, Q., Cai, W.-B., Yang, H., & Jiang, K.
- Venue
- ACS Catalysis
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-07-20
- Volume
- 12
- Issue
- 15
- Pages
- 9437-9445
- ISSN
- 2155-5435 (ISSN-L)
- OpenAlex
- W4286209012
- Cited by
- 200
- References
- 4
- FWCI
- 7.49
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wang, X., Wan, X., Qin, X., Chen, C., Qian, X., Guo, Y., Xu, Q., Cai, W.-B., Yang, H., & Jiang, K. (2022). Electronic Structure Modulation of RuO2 by TiO2 Enriched with Oxygen Vacancies to Boost Acidic O2 Evolution. ACS Catalysis. https://doi.org/10.1021/acscatal.2c01944
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