- Title
- Efficient CO₂ Reduction to Formate on CsPbI₃ Nanocrystals Wrapped with Reduced Graphene Oxide
- Creator
- Hoang, Minh Tam; Han, Chen; Pan, Jian; Amal, Rose; Du, Aijun; Tesfamichael, Tuquabo; Han, Zhaojun; Wang, Hongxia; Ma, Zhipeng; Mao, Xin; Yang, Yang; Madani, Sepideh Sadat; Shaw, Paul; Yang, Yongchao; Peng, Lingyi; Toe, Cui Ying
- Relation
- Nano-Micro Letters Vol. 15, no. 161
- Publisher Link
- http://dx.doi.org/10.1007/s40820-023-01132-3
- Publisher
- Springer
- Resource Type
- journal article
- Date
- 2023
- Description
- HIGHLIGHTS: A rational design of metal halide perovskites for achieving efficient CO₂ reduction reaction was demonstrated. The stability of CsPbI₃ perovskite nanocrystal (NCs) in aqueous electrolyte was improved by compositing with reduced graphene oxide (rGO). The CsPbI₃/rGO catalyst exhibited > 92% Faradaic efficiency toward formate production with high current density which was associated with the synergistic effects between the CsPbI₃ NCs and rGO. ABSTRACT: Transformation of greenhouse gas (CO₂) into valuable chemicals and fuels is a promising route to address the global issues of climate change and the energy crisis. Metal halide perovskite catalysts have shown their potential in promoting CO₂ reduction reaction (CO₂RR), however, their low phase stability has limited their application perspective. Herein, we present a reduced graphene oxide (rGO) wrapped CsPbI₃ perovskite nanocrystal (NC) CO₂RR catalyst (CsPbI₃/rGO), demonstrating enhanced stability in the aqueous electrolyte. The CsPbI₃/rGO catalyst exhibited > 92% Faradaic efficiency toward formate production at a CO2RR current density of ~ 12.7 mA cm−2. Comprehensive characterizations revealed the superior performance of the CsPbI₃/rGO catalyst originated from the synergistic effects between the CsPbI₃ NCs and rGO, i.e., rGO stabilized the α-CsPbI₃ phase and tuned the charge distribution, thus lowered the energy barrier for the protonation process and the formation of *HCOO intermediate, which resulted in high CO₂RR selectivity toward formate. This work shows a promising strategy to rationally design robust metal halide perovskites for achieving efficient CO₂RR toward valuable fuels.
- Subject
- perovskite nanocrystal; electrocatalyst; inorganic perovskite; CO₂ reduction; formate production; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1485696
- Identifier
- uon:51677
- Identifier
- ISSN:2150-5551
- Rights
- © The Author(s) 2023 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Language
- eng
- Full Text
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