Preparation of Amorphous SnO2‐Encapsulated Multiphased Crystalline Cu Heterostructures for Highly Efficient CO2 Reduction

Peng‐Fei Yin; Jiaju Fu; Qinbai Yun; Bo Chen; Guigao Liu; Lujiang Li; Zhiqi Huang; Yiyao Ge; Hua Zhang

doi:10.1002/adma.202201114

journal article May 23, 2022

Preparation of Amorphous SnO2‐Encapsulated Multiphased Crystalline Cu Heterostructures for Highly Efficient CO2 Reduction

Peng‐Fei Yin Jiaju Fu

Qinbai Yun Bo Chen

Guigao Liu

Lujiang Li Zhiqi Huang

Yiyao Ge

Hua Zhang

Advanced Materials Vol. 34 No. 26 · Wiley

View at Publisher Save 10.1002/adma.202201114

Abstract

AbstractControlling the architectures and crystal phases of metal@semiconductor heterostructures is very important for modulating their physicochemical properties and enhancing their application performances. Here, a facile one‐pot wet‐chemical method to synthesize three types of amorphous SnO2‐encapsulated crystalline Cu heterostructures, i.e., hemicapsule, yolk–shell, and core–shell nanostructures, in which unconventional crystal phases (e.g., 2H, 4H, and 6H) and defects (e.g., stacking faults and twin boundaries) are observed in the crystalline Cu cores, is reported. The hemicapsule Cu@SnO2 heterostructures, with voids that not only expose the Cu core with unconventional phases but also retain the interface between Cu and SnO2, show an excellent electrocatalytic CO2 reduction reaction (CO2RR) selectivity toward the production of CO and formate with high Faradaic efficiency (FE) above 90% in a wide potential window from −1.05 to −1.55 V (vs reversible hydrogen electrode (RHE)), and the highest FE of CO2RR (95.3%) is obtained at −1.45 V (vs RHE). This work opens up a new way for the synthesis of new heterostructured nanomaterials with promising catalytic application.

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References

Details

Published: May 23, 2022
Vol/Issue: 34(26)
License: View

Authors

P

Peng‐Fei Yin

Department of Chemistry City University of Hong Kong Hong Kong China; Institute of New‐Energy Materials School of Materials Science and Engineering Tianjin University Tianjin 300072 China

J

Jiaju Fu