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Selective CO 2 Reduction on 2D Mesoporous Bi Nanosheets
Author(s) -
Yang Hui,
Han Na,
Deng Jun,
Wu Jinghua,
Wang Yu,
Hu Yongpan,
Ding Pan,
Li Yafei,
Li Yanguang,
Lu Jun
Publication year - 2018
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201801536
Subject(s) - materials science , formate , bismuth , electrocatalyst , mesoporous material , faraday efficiency , tin , selectivity , oxygen evolution , solar fuel , nanotechnology , inorganic chemistry , chemical engineering , catalysis , anode , electrode , electrochemistry , photocatalysis , chemistry , metallurgy , organic chemistry , engineering
The conversion of CO 2 to value‐added products using electrical or solar energy represents an attractive means for the capture and utilization of atmospheric CO 2 . Formate is a popular product from CO 2 reduction, but its reaction selectivity is usually unsatisfactory. Tin‐based materials have attracted the most attention for formate production at present. Unfortunately, most of them only exhibit moderate selectivity in a narrow and highly cathodic potential window. In this study, it is demonstrated that traditionally under‐explored bismuth has a much greater potential for formate production than tin or other materials. Mesoporous bismuth nanosheets are prepared here by the cathodic transformation of atomic‐thick bismuth oxycarbonate nanosheets. They enable the selective CO 2 reduction to formate with large current density, excellent Faradaic efficiency (≈100%) over a broad potential window and great operation stability. Moreover, Bi nanosheets are integrated with an oxygen evolution reaction electrocatalyst in full cells, and achieve efficient and robust solar conversion of CO 2 /H 2 O to formate/O 2 .