Sustained CO2-photoreduction activity and high selectivity over Mn, C-codoped ZnO core-triple shell hollow spheres

Mahmoud Sayed, Feiyan Xu, Panyong Kuang, Jingxiang Low, Shengyao Wang, Liuyang Zhang () and Jiaguo Yu ()
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Mahmoud Sayed: Wuhan University of Technology
Feiyan Xu: China University of Geosciences
Panyong Kuang: China University of Geosciences
Jingxiang Low: Wuhan University of Technology
Shengyao Wang: Huazhong Agricultural University
Liuyang Zhang: Wuhan University of Technology
Jiaguo Yu: Wuhan University of Technology

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract Solar conversion of CO2 into energy-rich products is one of the sustainable solutions to lessen the global energy shortage and environmental crisis. Pitifully, it is still challenging to attain reliable and affordable CO2 conversion. Herein, we demonstrate a facile one-pot approach to design core-triple shell Mn, C-codoped ZnO hollow spheres as efficient photocatalysts for CO2 reduction. The Mn ions, with switchable valence states, function as “ionized cocatalyst” to promote the CO2 adsorption and light harvesting of the system. Besides, they can capture photogenerated electrons from the conduction band of ZnO and provide the electrons for CO2 reduction. This process is continuous due to the switchable valence states of Mn ions. Benefiting from such unique features, the prepared photocatalysts demonstrated fairly good CO2 conversion performance. This work is endeavoured to shed light on the role of ionized cocatalyst towards sustainable energy production.

Date: 2021
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DOI: 10.1038/s41467-021-25007-6

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