Volume 17, Issue 40 2103796
Research Article

Unique Dual-Sites Boosting Overall CO2 Photoconversion by Hierarchical Electron Harvesters

Xingwang Zhu

Xingwang Zhu

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

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Yitao Cao

Yitao Cao

Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585 Singapore

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Yanhua Song

Corresponding Author

Yanhua Song

School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu, 212003 P. R. China

E-mail: [email protected]; [email protected]

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Jinman Yang

Jinman Yang

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

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Xiaojie She

Xiaojie She

Department of Applied Physics, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, 999077 P. R. China

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Zhao Mo

Zhao Mo

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

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Yuanbin She

Yuanbin She

College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014 P. R. China

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Qing Yu

Qing Yu

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

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Xianglin Zhu

Xianglin Zhu

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

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Junjie Yuan

Junjie Yuan

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

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Huaming Li

Huaming Li

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

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Hui Xu

Corresponding Author

Hui Xu

School of the Environment and Safety Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, 212013 P. R. China

E-mail: [email protected]; [email protected]

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First published: 22 August 2021
Citations: 34

Abstract

Low selectivity and poor activity of photocatalytic CO2 reduction process are usually limiting factors for its applicability. Herein, a hierarchical electron harvesting system is designed on CoNiP hollow nano-millefeuille (CoNiP NH), which enables the charge enrichment on CoNi dual active sites and selective conversion of CO2 to CH4. The CoNiP serves as an electron harvester and photonic “black hole” accelerating the kinetics for CO2-catalyzed reactions. Moreover, the dual sites form from highly stable CoONiC intermediates, which thermodynamically not only lower the reaction energy barrier but also transform the reaction pathways, thus enabling the highly selective generation of CH4 from CO2. As an outcome, the CoNiP NH/black phosphorus with dual sites leads to a tremendously improved photocatalytic CH4 generation with a selectivity of 86.6% and an impressive activity of 38.7 µmol g−1 h−1.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

Research data are not shared.

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