DataVXACS Energy LettersPaper
journal article·2019-09-13

Metal–Oxide Interfaces for Selective Electrochemical C–C Coupling Reactions

Chan Woo Lee, Seung-Jae Shin, Hyejin Jung, Dang Le Tri Nguyen, Si Young Lee, Woong Hee Lee, Da Hye Won, Min Gyu Kim, Hyung-Suk Oh, Taehwan Jang, Hyungjun Kim, Byoung Koun Min, Yun Jeong Hwang

ACS Energy Letters· Volume 4· Issue 9
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Source abstract

Abstract

Metal–oxide interfaces provide a new opportunity to improve catalytic activity based on electronic and chemical interactions at the interface. Constructing a high density of interfaces is essential in maximizing synergistic interactions. Here, we demonstrate that Cu–ceria interfaces made by sintering nanocrystals facilitate C–C coupling reactions in electrochemical reduction of CO2. The Cu/ceria catalyst enhances the selectivity of ethylene and ethanol production with the suppression of H2 evolution in comparison with Cu catalysts. The intrinsic activity for ethylene production is enhanced by decreasing the atomic ratio of Cu/Ce, revealing the Cu atoms near ceria are an active site for C–C coupling reactions. The ceria is proposed to weaken the hydrogen binding energy of adjacent Cu sites and stabilize an *OCCO intermediate via an additional chemical interaction with an oxygen atom of the *OCCO. This work offers new insights into the role of the metal–oxide interface in the electrochemical reduction of CO2 to high-value chemicals.
Source: openalex_inverted_index · Quality: baseline

Research context

Ceramics & glassesNanomaterialsCatalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Electrocatalysts for Energy Conversion

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea

Department of Chemistry, Kookmin University, Seoul 02707, Republic of Korea

Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea

Division of Energy and Environmental Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea

Institute of Research and Development, Duy Tan University, Da Nang City 550000, Vietnam

Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology, Pohang 37673, Republic of Korea

Green School, Korea University, Seoul 02841, Republic of Korea

Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea

Funding

National Research Foundation of Korea · Korea Institute of Science and Technology · YU-KIST convergence program

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