Synthesis of Cu2O@Cu-Fe-K Prussian Blue analogue core-shell nanocube for enhanced electroreduction of CO2 to multi-carbon products

被引：16
作者：
Cheng, Yuan-Sheng [1 ]
Li, Hong [1 ]
Ling, Min [2 ]
Li, Na [2 ]
Jiang, Binbin [3 ]
Wu, Fang-Hui [1 ]
Yuan, Guozan [1 ]
Wei, Xian-Wen [1 ]
机构：
[1] Anhui Univ Technol, Sch Chem & Chem Engn, Inst Mat Sci & Engn, Anhui Prov Key Lab Coal Clean Convers & High Valu, Maanshan 243002, Peoples R China
[2] Anhui Normal Univ, Coll Chem & Mat Sci, Key Lab Funct Mol Solids,Minist Educ, Anhui Lab Mol Based Mat,Anhui Key Lab Funct Mol S, Wuhu 241000, Peoples R China
[3] Anqing Normal Univ, Anhui Key Lab Funct Coordinat Cpds, Anqing 246011, Peoples R China
来源：
MATERIALS LETTERS | 2020年 / 260卷
关键词：
Carbon dioxide; Electrochemical reduction; Structural; Catalyst; Composite materials; ELECTROCHEMICAL REDUCTION; SELECTIVITY; ELECTRODES; METHANOL; COPPER;
D O I：
10.1016/j.matlet.2019.126868
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cu2O@Cu-Fe-K Prussian Blue analogue (K-PBA) core-shell nanocube was synthesized by a facile template-engaged redox deposition approach, and could be used as an efficient catalyst for CO2 electrochemical reduction (CO2ER). The presence of K-PBA shell not only can protect the Cu2O active core, but also promote the ratios of multi-carbon products to competing methane in CO2ER, achieving a total C2+ Faradaic efficiency (FE) of 23.9% (ethylene 10.8%, ethanol 3.6% and n-propanol 9.5%) at -1.11 V (vs. reversible hydrogen electrode (RHE), while j(total) = 6.2 mA cm(-2). It is suggested that K-PBA shell coating alter inherent adsorption energetics of Cu2O, which contributes to the C-C coupling step in CO2 ER. (C) 2019 Elsevier B.V. All rights reserved.
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页数：4
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