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Hollow CuS Microcube Electrocatalysts for CO 2 Reduction Reaction
Author(s) -
Shao Ping,
Ci Suqin,
Yi Luocai,
Cai Pingwei,
Huang Peng,
Cao Changsheng,
Wen Zhenhai
Publication year - 2017
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201700517
Subject(s) - overpotential , x ray photoelectron spectroscopy , faraday efficiency , raman spectroscopy , electrochemistry , transmission electron microscopy , galvanic cell , scanning electron microscope , materials science , electrochemical reduction of carbon dioxide , electrocatalyst , chemical engineering , nanotechnology , catalysis , chemistry , carbon monoxide , electrode , metallurgy , organic chemistry , physics , optics , composite material , engineering
Electrocatalytic carbon dioxide reduction reaction (CO 2 RR) is a promising strategy to mitigate or to address the issues caused by increasing CO 2 emissions, but the implementation of such a technique highly depends on the exploration of highly efficient electrocatalysts toward the CO 2 RR. Here, we report a reliable route for the synthesis of hollow CuS microcubes (h‐CuS MCs) through a galvanic replacement reaction of the Cu 2 O microcube (Cu 2 O MC) precursor. A variety of characteristic techniques, including X‐ray diffraction, X‐ray photoelectron spectroscopy, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy, were performed to study the morphology, crystalline structure, and surface properties. Systematic electrochemical studies demonstrate that the electrocatalytic activity for CO 2 RR is sensitive to crystalline structure, morphology, and size of Cu‐based materials. The h‐CuS MCs manifest the highest electrocatalytic activity upon electrocatalyzing CO 2 RR among the set of Cu‐based materials tested, as evidenced by a rather low overpotential and an enhanced faradaic efficiency for CO production.