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Photocatalytic CO2 reduction highly enhanced by oxygen vacancies on Pt-nanoparticle-dispersed gallium oxide
Abstract
Photocatalytic CO2 reduction on metal-oxide-based catalysts is promising for solving the energy and environmental crises faced by mankind. The oxygen vacancy (V o) on metal oxides is expected to be a key factor affecting the efficiency of photocatalytic CO2 reduction on metal-oxide-based catalysts. Yet, to date, the question of how an V o influences photocatalytic CO2 reduction is still unanswered. Herein, we report that, on V o-rich gallium oxide coated with Pt nanoparticles (V o-rich Pt/Ga2O3), CO2 is photocatalytically reduced to CO, with a highly enhanced CO evolution rate (21.0 μmol·h−1) compared to those on V o-poor Pt/Ga2O3 (3.9 μmol·h−1) and Pt/TiO2(P25) (6.7 μmol·h−1). We demonstrate that the V o leads to improved CO2 adsorption and separation of the photoinduced charges on Pt/Ga2O3, thus enhancing the photocatalytic activity of Pt/Ga2O3. Rational fabrication of an V o is thereby an attractive strategy for developing efficient catalysts for photocatalytic CO2 reduction.
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Cites
Photoreduction of carbon dioxide by hydrogen over magnesium oxide
Kohno, Y., Ishikawa, H., Tanaka, T., Funabiki, T., & Yoshida, S. (2001) · Physical Chemistry Chemical Physics · doi:10.1039/b008887k · Cited by 105
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Jiao, X., Chen, Z., Li, X., Sun, Y., Gao, S., Yan, W., Wang, C., Zhang, Q., Lin, Y., Luo, Y., et al. (2017) · Journal of the American Chemical Society · doi:10.1021/jacs.7b02290 · Cited by 1,049
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Metadata
- Authors
- Pan, Y.-X., Sun, Z.-Q., Cong, H.-P., Men, Y.-L., Xin, S., Song, J., & Yu, S.-H.
- Venue
- Nano Research
- Publisher
- Tsinghua University Press
- Published
- 2016-04-28
- Volume
- 9
- Issue
- 6
- Pages
- 1689-1700
- ISSN
- 1998-0000 (ISSN-L)
- 1998-0124
- OpenAlex
- W2344981826
- Cited by
- 163
- References
- 1
- FWCI
- 6.17
- Type
- journal article
- Language
- en
- Open access
- closed
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- Pan, Y.-X., Sun, Z.-Q., Cong, H.-P., Men, Y.-L., Xin, S., Song, J., & Yu, S.-H. (2016). Photocatalytic CO2 reduction highly enhanced by oxygen vacancies on Pt-nanoparticle-dispersed gallium oxide. Nano Research. https://doi.org/10.1007/s12274-016-1063-4
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