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A Rational Design of Cu 2 O−SnO 2 Core‐Shell Catalyst for Highly Selective CO 2 ‐to‐CO Conversion
Author(s) -
Zhang ShengNian,
Li Meng,
Hua Bin,
Duan Nanqi,
Ding Shaochen,
Bergens Steven,
Shankar Karthik,
Luo JingLi
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201900395
Subject(s) - overpotential , electrocatalyst , catalysis , faraday efficiency , materials science , tin , electrochemistry , chemical engineering , electrolyte , noble metal , inorganic chemistry , nanotechnology , chemistry , electrode , metallurgy , organic chemistry , engineering
The electrochemical reduction of CO 2 (CO 2 RR) is a versatile method that is capable of simultaneously reduce CO 2 emission and produce valuable fuels and chemicals. However, its application is hindered by the lack of cost‐effective catalysts and significant overpotential requirement. In this work, we report a low‐cost and surfactant/capping agent free method to synthesize cubic Cu 2 O−SnO 2 core‐shell electrocatalyst, whose thickness can be easily controlled by the content of tin precursor. The optimized Cu 2 O−SnO 2 catalyst with a 5 nm‐thick shell achieved over 90 % faradaic efficiency towards CO at a low overpotential of 390 mV, which is comparable to some of the noble metal catalysts. The catalyst also exhibited good stability over 18 hours of test at −0.6 V vs. RHE in 0.5 M KHCO 3 electrolyte . This work provides a widely applicable strategy for developing a low‐cost electrocatalyst for CO 2 conversion.