Boosting Tunable Syngas Formation via Electrochemical CO2 Reduction on Cu/In2O3 Core/Shell Nanoparticles

Xie, Huan1; Chen, Shaoqing2; Ma, Feng1; Lianz, Jiashun1; Miao, Zhengpei1; Wang, Tanyuan1; Wang, Hsing-Lin2; Huang, Yunhui1; Li, Qing1

2018-10-31

10.1021/acsami.8b12747

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

In this work, monodisperse core/shell Cu/In2O3 nanoparticles (NPs) were developed to boost efficient and tunable syngas formation via electrochemical CO2 reduction for the first time. The efficiency and composition of syngas production on the developed carbon-supported Cu/In2O3 catalysts are highly dependent on the In2O3 shell thickness (0.4-1.5 nm). As a result, a wide H-2/CO ratio (4/1 to 0.4/1) was achieved on the Cu/In2O3 catalysts by controlling the shell thickness and the applied potential (from -0.4 to -0.9 V vs reversible hydrogen electrode), with Faraday efficiency of syngas formation larger than 90%. Specifically, the best-performing Cu/In2O3 catalyst demonstrates remarkably large current densities under low overpotentials (4.6 and 12.7 mA/cm(2) at -0.6 and -0.9 V, respectively), which are competitive with most of the reported systems for syngas formation. Mechanistic discussion implicates that the synergistic effect between lattice compression and Cu doping in the 1%03 shell may enhance the binding of *COOH on the Cu/In2O3 NP surface, leading to the enhanced CO generation relative to Cu and In2O3 catalysts. This report demonstrates a new strategy to realize efficient and tunable syngas formation via rationally designed core/shell catalyst configuration.

CO2 reduction electrocatalysis syngas copper indium oxide

SCI ; EI

英语

通讯

Shenzhen Basic Research Fund[CYJ20170817110652558]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000449239600045

AMER CHEMICAL SOC

20184406000028

Carbon dioxide ; Catalysts ; Copper ; Efficiency ; Electrocatalysis ; Nanoparticles ; Reduction ; Synthesis gas

Copper:544.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Production Engineering:913.1 ; Solid State Physics:933

Web of Science

1.Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Xie, Huan,Chen, Shaoqing,Ma, Feng,et al. Boosting Tunable Syngas Formation via Electrochemical CO2 Reduction on Cu/In2O3 Core/Shell Nanoparticles[J]. ACS Applied Materials & Interfaces,2018,10(43):36996-37004.

Xie, Huan.,Chen, Shaoqing.,Ma, Feng.,Lianz, Jiashun.,Miao, Zhengpei.,...&Li, Qing.(2018).Boosting Tunable Syngas Formation via Electrochemical CO2 Reduction on Cu/In2O3 Core/Shell Nanoparticles.ACS Applied Materials & Interfaces,10(43),36996-37004.

Xie, Huan,et al."Boosting Tunable Syngas Formation via Electrochemical CO2 Reduction on Cu/In2O3 Core/Shell Nanoparticles".ACS Applied Materials & Interfaces 10.43(2018):36996-37004.