title: Tuning Sn-Catalysis for Electrochemical Reduction of CO2to CO via the Core/Shell Cu/SnO2Structure.
abstract: Tin (Sn) is known to be a good catalyst for electrochemical reduction of CO2to formate in 0.5 M KHCO3. But when a thin layer of SnO2is coated over Cu nanoparticles, the reduction becomes Sn-thickness dependent: the thicker (1.8 nm) shell shows Sn-like activity to generate formate whereas the thinner (0.8 nm) shell is selective to the formation of CO with the conversion Faradaic efficiency (FE) reaching 93% at -0.7 V (vs reversible hydrogen electrode (RHE)). Theoretical calculations suggest that the 0.8 nm SnO2shell likely alloys with trace of Cu, causing the SnO2lattice to be uniaxially compressed and favors the production of CO over formate. The report demonstrates a new strategy to tune NP catalyst selectivity for the electrochemical reduction of CO2via the tunable core/shell structure.
authors.affiliation: State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology , Wuhan 430074, China.|Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.
authors.forename: Qing
authors.identifier: 0000-0003-4807-030X
authors.initials: Q
authors.lastname: Li
authors.affiliation: Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.|State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Jiaju
authors.initials: J
authors.lastname: Fu
authors.affiliation: Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.
authors.forename: Wenlei
authors.initials: W
authors.lastname: Zhu
authors.affiliation: Department of Physics and Astronomy, California State University-Northridge , Northridge, California 91330, United States.
authors.forename: Zhengzheng
authors.identifier: 0000-0002-4911-9649
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.
authors.forename: Bo
authors.initials: B
authors.lastname: Shen
authors.affiliation: Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.
authors.forename: Liheng
authors.initials: L
authors.lastname: Wu
authors.affiliation: Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xi
authors.affiliation: State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology , Wuhan 430074, China.
authors.forename: Tanyuan
authors.initials: T
authors.lastname: Wang
authors.affiliation: Department of Physics and Astronomy, California State University-Northridge , Northridge, California 91330, United States.
authors.forename: Gang
authors.initials: G
authors.lastname: Lu
authors.affiliation: State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, China.
authors.forename: Jun-Jie
authors.identifier: 0000-0002-8201-1285
authors.initials: JJ
authors.lastname: Zhu
authors.affiliation: Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States.
authors.forename: Shouheng
authors.identifier: 0000-0002-4051-0430
authors.initials: S
authors.lastname: Sun