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Solar CO2 reduction using H2O by a semiconductor/metal-complex hybrid photocatalyst: enhanced efficiency and demonstration of a wireless system using SrTiO3 photoanodes
Abstract
Solar formate production from CO2 and H2O was achieved with no external electrical bias by combining an InP/[RuCP] semiconductor/metal-complex hybrid photocathode with a reduced SrTiO3 (r-STO) photoanode. The conversion efficiency from solar to chemical energy was improved from 0.03 to 0.14% compared to a previous system utilizing a TiO2 photoanode. Stimulated electron transfer from the photoanode to the photocathode is the main cause for the observed improvement, due to an enlarged difference in the band-energy position between r-STO and InP. Since r-STO showed high H2O oxidation selectivity even in the presence of formate, a r-STO/InP/[RuCP] wireless device successfully performed solar CO2 reduction in a one-compartment reactor with no proton exchange membrane, yielding a solar conversion efficiency of 0.08%.
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Cites
Environmental applications of semiconductor photocatalysis
Hoffmann, M. R., Martin, S. T., Choi, W., & Bahnemann, D. W. (1995) · Chemical Reviews · doi:10.1021/cr00033a004 · Cited by 18,495
Semiconductor-based Photocatalytic Hydrogen Generation
Chen, X., Shen, S., Guo, L., & Mao, S. S. (2010) · Chemical Reviews · doi:10.1021/cr1001645 · Cited by 7,876
Cited by
Tu, W., Zhou, Y., & Zou, Z. (2014) · Advanced Materials · doi:10.1002/adma.201400087 · Cited by 1,635
CO2 Reduction: From the Electrochemical to Photochemical Approach
Wu, J., Huang, Y., Ye, W., & Li, Y. (2017) · Advanced Science · doi:10.1002/advs.201700194 · Cited by 937
Electro- and Solar-Driven Fuel Synthesis with First Row Transition Metal Complexes
Dalle, K. E., Warnan, J., Leung, J. J., Reuillard, B., Karmel, I. S., & Reisner, E. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00392 · Cited by 912
Boutin, E., Merakeb, L., Ma, B., Boudy, B., Wang, M., Bonin, J., Anxolabéhère-Mallart, E., & Robert, M. (2020) · Chemical Society Reviews · doi:10.1039/d0cs00218f · Cited by 423
Reaction mechanisms of catalytic photochemical CO2 reduction using Re(I) and Ru(II) complexes
Kuramochi, Y., Ishitani, O., & Ishida, H. (2018) · Coordination Chemistry Reviews · doi:10.1016/j.ccr.2017.11.023 · Cited by 325
Metadata
- Authors
- Arai, T., Sato, S., Kajino, T., & Morikawa, T.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2013
- Volume
- 6
- Issue
- 4
- Pages
- 1274
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2077085540
- Cited by
- 278
- References
- 2
- FWCI
- 9.62
- Type
- journal article
- Language
- en
- Open access
- closed
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- Arai, T., Sato, S., Kajino, T., & Morikawa, T. (2013). Solar CO2 reduction using H2O by a semiconductor/metal-complex hybrid photocatalyst: enhanced efficiency and demonstration of a wireless system using SrTiO3 photoanodes. Energy & Environmental Science. https://doi.org/10.1039/c3ee24317f
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