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Concentrated solar CO₂ reduction in H₂O vapour with >1% energy conversion efficiency

Chemistry

Concentrated solar CO₂ reduction in H₂O vapour with >1% energy conversion efficiency

Y. Ren, Y. Fu, et al.

Discover the groundbreaking research on a novel oxygen-vacancy rich CeO₂ catalyst with single-atom Ni that revolutionizes H₂O dissociation for efficient photothermal CO₂ reduction. This innovative approach yields impressive CH₄ output and reveals significant insights into carrier kinetics and reactant activation, thanks to authors Yuqi Ren, Yiwei Fu, Naixu Li, and their esteemed colleagues.

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Playback language: English
Abstract
This paper reports on a novel oxygen-vacancy (V₀) rich CeO₂ catalyst with single-atom Ni anchored to its surface to enhance H₂O dissociation and achieve efficient photothermal CO₂ reduction under concentrated light irradiation. The catalyst exhibits a CH₄ yield of 192.75 µmol/cm²/h, a solar-to-chemical efficiency of 1.14%, and ~100% selectivity. Mechanistic studies, including DFT and AIMD simulations, reveal the crucial roles of Ni and V₀ in enhancing carrier kinetics and reactant activation, achieving thermally assisted photocatalysis.
Publisher
Nature Communications
Published On
Jun 01, 2024
Authors
Yuqi Ren, Yiwei Fu, Naixu Li, Changjun You, Jie Huang, Kai Huang, Zhenkun Sun, Jiancheng Zhou, Yitao Si, Yuanhao Zhu, Wenshuai Chen, Lunbo Duan, Maochang Liu
Tags
CeO₂ catalyst
oxygen vacancy
photothermal CO₂ reduction
H₂O dissociation
Ni single-atom
thermally assisted photocatalysis
carrier kinetics

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