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Zhang Y, Chen Y, Wang X, Feng Y, Dai Z, Cheng M, Zhang G. Low-coordinated copper facilitates the *CH 2CO affinity at enhanced rectifying interface of Cu/Cu 2O for efficient CO 2-to-multicarbon alcohols conversion. Nat Commun 2024; 15:5172. [PMID: 38890306 PMCID: PMC11189494 DOI: 10.1038/s41467-024-49247-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Accepted: 05/29/2024] [Indexed: 06/20/2024] Open
Abstract
The carbon-carbon coupling at the Cu/Cu2O Schottky interface has been widely recognized as a promising approach for electrocatalytic CO2 conversion into value-added alcohols. However, the limited selectivity of C2+ alcohols persists due to the insufficient control over rectifying interface characteristics required for precise bonding of oxyhydrocarbons. Herein, we present an investigation into the manipulation of the coordination environment of Cu sites through an in-situ electrochemical reconstruction strategy, which indicates that the construction of low-coordinated Cu sites at the Cu/Cu2O interface facilitates the enhanced rectifying interfaces, and induces asymmetric electronic perturbation and faster electron exchange, thereby boosting C-C coupling and bonding oxyhydrocarbons towards the nucleophilic reaction process of *H2CCO-CO. Impressively, the low-coordinated Cu sites at the Cu/Cu2O interface exhibit superior faradic efficiency of 64.15 ± 1.92% and energy efficiency of ~39.32% for C2+ alcohols production, while maintaining stability for over 50 h (faradic efficiency >50%, total current density = 200 mA cm-2) in a flow-cell electrolyzer. Theoretical calculations, operando synchrotron radiation Fourier transform infrared spectroscopy, and Raman experiments decipher that the low-coordinated Cu sites at the Cu/Cu2O interface can enhance the coverage of *CO and adsorption of *CH2CO and CH2CHO, facilitating the formation of C2+ alcohols.
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Affiliation(s)
- Yangyang Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Yanxu Chen
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Xiaowen Wang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Yafei Feng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Zechuan Dai
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Mingyu Cheng
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China
| | - Genqiang Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui, China.
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Xu X, Xiao D, Gao Y, Li W, Gao M, Zhao S, Wang Z, Zheng Z, Wang P, Cheng H, Liu Y, Dai Y, Huang B. Pd-Decorated Cu 2O-Ag Catalyst Promoting CO 2 Electroreduction to C 2H 4 by Optimizing CO Intermediate Adsorption and Hydrogenation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:16243-16252. [PMID: 38527494 DOI: 10.1021/acsami.4c00472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
Electrocatalytic CO2 reduction reaction (CO2RR) to high value-added products, such as ethylene (C2H4), offers a promising approach to achieve carbon neutrality. Although recent studies have reported that a tandem catalyst (for example, Cu-Ag systems) exhibits advantage in C2H4 production, its practical application is largely inhibited by the following: (1) a traditional tandem catalyst cannot effectively stabilize the *CO intermediate, resulting in sluggish C-C coupling, and (2) inadequate H2O activation ability hinders the hydrogenation of intermediates. To break through the above bottleneck, herein, palladium (Pd) was introduced into Cu2O-Ag, a typical conventional tandem catalyst, to construct a Cu2O-Pd-Ag ternary catalyst. Extensive experiment and density functional theory calculation prove that Pd can efficiently stabilize the *CO intermediate and promote the H2O activation, which contributes to the C-C coupling and intermediate hydrogenation, the key steps in the conversion of CO2 to C2H4. Beneficial to the efficient synergy of Cu2O, Pd, and Ag, the optimal Cu2O-Pd-Ag ternary catalyst achieves CO2RR toward C2H4 with a faradaic efficiency of 63.2% at -1.2 VRHE, which is higher than that achieved by Cu2O-Ag and most of other reported catalysts. This work is a fruitful exploration of a rare ternary catalyst, providing a new route for constructing an efficient CO2RR electrocatalyst.
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Affiliation(s)
- Xianbin Xu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Difei Xiao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yugang Gao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Wenbo Li
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Miaomiao Gao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Shuang Zhao
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zeyan Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Peng Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Hefeng Cheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yuanyuan Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
| | - Ying Dai
- School of Physics, Shandong University, Jinan 250100, China
| | - Baibiao Huang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
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Liu Z, Liu C, Mao S, Huang X. Heterogeneous Structure of Sn/SnO 2 Constructed via Phase Engineering for Efficient and Stable CO 2 Reduction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:7529-7537. [PMID: 36694419 DOI: 10.1021/acsami.2c18522] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The electrochemical carbon dioxide reduction reaction (CO2RR) catalyzed by Sn-based materials shows great potential for CO2-to-formate conversion. The presence of tin species with different oxidation states can promote the catalytic performance, most likely due to the interfaces of metallic and oxide phases that induce a synergistic effect. Therefore, it is desirable yet challenging to synthesize a hybrid catalyst with abundant active heterogeneous interfaces. Herein, we synthesize a hybrid catalyst constructed by decorating nanosized SnS2 in the SnO2 matrix. The uniformly distributed SnS2 nanoparticles are first reduced to metallic tin, which assists in the generation of abundant Sn/SnO2 heterogeneous interfaces under the in situ reduction process. Because of the electronic modulation at the heterogeneous interfaces, the resulting catalyst delivers a high current density of 200 mA·cm-2 at -0.86 V vs RHE, and the performance is stable for over 20 h. This work suggests a potentially powerful interface engineering strategy for the development of high-performance electrocatalysts for the CO2RR.
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Affiliation(s)
- Zhipeng Liu
- Hoffmann Institute of Advanced Materials, Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen518055, P. R. China
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen518055, P. R. China
| | - Chang Liu
- Hoffmann Institute of Advanced Materials, Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen518055, P. R. China
- School of Materials and Metallurgy, University of Science and Technology Liaoning, 185 Qianshan Zhong Road, Anshan114051, P. R. China
| | - Suhua Mao
- Hoffmann Institute of Advanced Materials, Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen518055, P. R. China
| | - Xiaoxi Huang
- Hoffmann Institute of Advanced Materials, Postdoctoral Innovation Practice Base, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen518055, P. R. China
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Mosali VSS, Bond AM, Zhang J. Alloying strategies for tuning product selectivity during electrochemical CO 2 reduction over Cu. NANOSCALE 2022; 14:15560-15585. [PMID: 36254597 DOI: 10.1039/d2nr03539a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Excessive reliance on fossil fuels has led to the release and accumulation of large quantities of CO2 into the atmosphere which has raised serious concerns related to environmental pollution and global warming. One way to mitigate this problem is to electrochemically recycle CO2 to value-added chemicals or fuels using electricity from renewable energy sources. Cu is the only metallic electrocatalyst that has been shown to produce a wide range of industrially important chemicals at appreciable rates. However, low product selectivity is a fundamental issue limiting commercial applications of electrochemical CO2 reduction over Cu catalysts. Combining copper with other metals that actively contribute to the electrochemical CO2 reduction reaction process can selectively facilitate generation of desirable products. Alloying Cu can alter surface binding strength through electronic and geometric effects, enhancing the availability of surface confined carbon species, and stabilising key reduction intermediates. As a result, significant research has been undertaken to design and fabricate copper-based alloy catalysts with structures that can enhance the selectivity of targeted products. In this article, progress with use of alloying strategies for development of Cu-alloy catalysts are reviewed. Challenges in achieving high selectivity and possible future directions for development of new copper-based alloy catalysts are considered.
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Affiliation(s)
| | - Alan M Bond
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia.
- ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton 3800, Victoria, Australia
| | - Jie Zhang
- School of Chemistry, Monash University, Clayton 3800, Victoria, Australia.
- ARC Centre of Excellence for Electromaterials Science, Monash University, Clayton 3800, Victoria, Australia
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Deng B, Zhao X, Li Y, Huang M, Zhang S, Dong F. Active site identification and engineering during the dynamic evolution of copper-based catalysts for electrocatalytic CO2 reduction. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1412-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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