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  CsPbBr3 perovskite based tandem device for CO2 photoreduction

Wang, J., Li, H., Gao, P., Peng, Y., Cao, S., & Antonietti, M. (2022). CsPbBr3 perovskite based tandem device for CO2 photoreduction. Chemical Engineering Journal, 443: 136447. doi:10.1016/j.cej.2022.136447.

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 Creators:
Wang, Jize, Author
Li, Han, Author
Gao, Peng, Author
Peng, Yong, Author
Cao, Shaowen, Author
Antonietti, Markus1, Author              
Affiliations:
1Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: CsPbBr perovskite materials; Tandem structure; Charge transfer; CO photoreduction device
 Abstract: The design of efficient photocatalytic devices is of great significance to achieve low-cost carbon dioxide reduction into solar fuels. Herein, directional charge-carrier migration is realized by introducing a CO2 reduction device with a tandem structure made up of g-C3N4 and an inorganic lead-perovskite (CsPbBr3). This photocatalytic device shows a significantly increased CO2 photoreduction rate in a humid gaseous CO2 system when compared to the parental g-C3N4 layer. This “full artificial photosynthesis” thereby generates fuel molecules and oxygen from water and CO2, only, without any co-catalysts or sacrificial agents. To our surprise, the device maintains greater than 90% of the CO production yield after 5 days continuous irradiation. The existence of internal electric field is confirmed, which drive the directional movement of photogenerated charge-carriers with the perovskite being reductive, while the carbon nitride with its enormous oxidation stability is covering the oxidation processes. This represents a promising possibility for the practical application of CO2 photoreduction with scalable devices.

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Language(s): eng - English
 Dates: 2022-09-012022
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1016/j.cej.2022.136447
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Title: Chemical Engineering Journal
Source Genre: Journal
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Publ. Info: Lausanne : Elsevier
Pages: - Volume / Issue: 443 Sequence Number: 136447 Start / End Page: - Identifier: ISSN: 1385-8947