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

被引:57
作者
Zhu, Xingwang [1 ,2 ]
Zhou, Guli [1 ]
Yi, Jianjian [3 ]
Ding, Penghui [4 ]
Yang, Jinman [1 ]
Zhong, Kang [1 ]
Song, Yanhua [7 ]
Hua, Yingjie [5 ]
Zhu, Xianglin [1 ]
Yuan, Junjie [1 ]
She, Yuanbin [6 ]
Li, Huaming [1 ]
Xu, Hui [1 ]
机构
[1] Jiangsu Univ, Sch Environm & Safety Engn, Inst Energy Res, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Natl Univ Singapore, Dept Chem & Biomol Engn, Singapore 117585, Singapore
[3] Yangzhou Univ, Coll Environm Sci & Engn, Yangzhou 225127, Jiangsu, Peoples R China
[4] Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, SE-60174 Norrkoping, Sweden
[5] Hainan Normal Univ, Sch Chem & Chem Engn, Key Lab Electrochem Energy Storage & Energy Conve, Haikou 571158, Hainan, Peoples R China
[6] Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Peoples R China
[7] Jiangsu Univ Sci & Technol, Sch Environm & Chem Engn, Zhenjiang 212003, Jiangsu, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
CO2; conversion; black phosphorus; Co2P; photocatalyst; charge transfer; interface; 2D material; BLACK PHOSPHORUS; PHOTOCATALYTIC REDUCTION; CHARGE-TRANSFER; H-2; EVOLUTION; NANOSHEETS; EXFOLIATION; GENERATION; CONVERSION; GRAPHENE; SURFACE;
D O I
10.1021/acsami.1c12692
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
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 mu mol 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.
引用
收藏
页码:39523 / 39532
页数:10
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