journal article·2021-08-25

Accelerated Photoreduction of CO2 to CO over a Stable Heterostructure with a Seamless Interface

Xingwang Zhu, Guli Zhou, Jianjian Yi, Penghui Ding, Jinman Yang, Kang Zhong, Yanhua Song, Yingjie Hua, Xianglin Zhu, Junjie Yuan, Yuanbin She, Huaming Li, Hui Xu

ACS Applied Materials & Interfaces· Volume 13· Issue 33
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Abstract

Photocatalytic CO2 reduction is a means of alleviating energy crisis and environmental deterioration. In this work, a rising two-dimensional (2D) material rarely reported in the field of photocatalytic CO2 reduction, black phosphorus (BP) nanosheets, is synthesized, on which Co2P is in situ grown by solvothermal treatment using BP itself as a P source. Co2P on the BP nanosheets (BPs) surface can prevent the destruction of BPs in ambient air and, in the meantime, favor charge separation and CO2 adsorption and activation during the catalytic process. Upon light irradiation, Co2P can extract the photogenerated electrons effectively across the intimate interface and lower the CO2 activation energy barrier, supported by both experimental characterizations and theoretical calculations. Benefitting from integrated advantages of BPs and Co2P, the optimal Co2P/BPs exhibit photocatalytic reduction of CO2 to CO at a rate of 25.5 μmol g–1 h–1 with a selectivity of 91.4%, both of which are higher than those of pristine BPs. This work presents ideas for stabilizing BPs and improving their CO2 reduction performance simultaneously.
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Research context

OpenAlex topics: Advanced Photocatalysis Techniques · CO2 Reduction Techniques and Catalysts · Covalent Organic Framework Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

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

College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, P. R. China

Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping SE-601 74, Sweden

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

The Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province, School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China

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

Funding

Jiangsu Agricultural Science and Technology Independent Innovation Fund · China Postdoctoral Science Foundation · Natural Science Foundation of Jiangsu Province · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Jiangsu Fund for Distinguished Young Scientists · High-Performance Computing Platform of Jiangsu University · Jiangsu Government Scholarship for Overseas Studies · Jiangsu University Study-abroad Scholarship for oversea study · Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province · Hightech Research Key laboratory of Zhenjiang

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