Selective Tandem CO2-to-C2+Alcohol Conversion at a Single-Crystal Au/Cu Bimetallic Interface

被引：5

作者：

Zhu, Chenyuan ^{[1
,2
]}

Zhang, Zhibin ^{[3
]}

Qiao, Ruixi ^{[4
]}

Yang, Chunlei ^{[1
,2
]}

Zhao, Siwen ^{[1
,2
]}

Shi, Guoshuai ^{[1
,2
]}

Gao, Xinyang ^{[1
,2
]}

Gu, Huoliang ^{[1
,2
]}

Liu, Kaihui ^{[3
]}

Zhang, Liming ^{[1
,2
]}

机构：

[1] Fudan Univ, iChEM Collaborat Innovat Ctr Chem Energy Mat, Dept Chem, Shanghai 200438, Peoples R China

[2] Fudan Univ, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200438, Peoples R China

[3] Peking Univ, Frontiers Sci Ctr Nanooptoelectron, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[4] Nanjing Univ Aeronaut & Astronaut, Inst Frontier Sci, Nanjing 210016, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2023年 / 127卷 / 07期

关键词：

ELECTROCHEMICAL REDUCTION; CARBON-DIOXIDE; CO2; REDUCTION; CU; ELECTROREDUCTION; ELECTRODES; CATALYST; PATHWAYS; INSIGHTS;

D O I：

10.1021/acs.jpcc.2c08241

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Copper-based bimetallic heterostructures have recently gained extensive attention because of their promising capability to steer the selectivity of electrochemical CO2 reduction into high-valued multicarbon products. However, a thorough mechanistic under-standing toward the CO2 reduction pathway and the influence of interfacial atomic configuration has not yet been unveiled. Herein, we rationally engaged facet engineering to construct a Au/Cu heterostructure via an epitaxial growth and observed that Au(110)/ Cu(110) exhibited the highest yield rate toward multicarbon alcohols, compared with results for Au(111)/Cu(111) and Au(100)/Cu(100). According to electrochemical analysis, the enhanced activity was attributed to high-conversion capabilities of both CO2-to-CO and *CO-to-C2+ alcohols. Moreover, we confirmed that the buildup of *CO is more crucial than the atomic arrangement of Cu surface for multicarbon production. Our work demonstrates a benchmark tandem CO2 electroreduction system to explicitly link the interfacial atomic configuration to the electrocatalytic performance and sheds light on the facet engineering of bimetallic electrodes in electrolysis.

引用

页码：3470 / 3477

页数：8