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Nickel Doping in Atomically Thin Tin Disulfide Nanosheets Enables Highly Efficient CO 2 Reduction
Author(s) -
Zhang An,
He Rong,
Li Huiping,
Chen Yijun,
Kong Taoyi,
Li Kan,
Ju Huanxin,
Zhu Junfa,
Zhu Wenguang,
Zeng Jie
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201806043
Subject(s) - materials science , tin , doping , faraday efficiency , nickel , chemical engineering , catalysis , electrochemistry , current density , nanotechnology , inorganic chemistry , electrode , metallurgy , optoelectronics , chemistry , organic chemistry , physics , quantum mechanics , engineering
Engineering electronic properties by elemental doping is a direct strategy to design efficient catalysts towards CO 2 electroreduction. Atomically thin SnS 2 nanosheets were modified by Ni doping for efficient electroreduction of CO 2 . The introduction of Ni into SnS 2 nanosheets significantly enhanced the current density and Faradaic efficiency for carbonaceous product relative to pristine SnS 2 nanosheets. When the Ni content was 5 atm %, the Ni‐doped SnS 2 nanosheets achieved a remarkable Faradaic efficiency of 93 % for carbonaceous product with a current density of 19.6 mA cm −2 at −0.9 V vs. RHE. A mechanistic study revealed that the Ni doping gave rise to a defect level and lowered the work function of SnS 2 nanosheets, resulting in the promoted CO 2 activation and thus improved performance in CO 2 electroreduction.