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Wang H, Wang S, Song Y, Zhao Y, Li Z, Shen Y, Peng Z, Gao D, Wang G, Bao X. Boosting Electrocatalytic Ethylene Epoxidation by Single Atom Modulation. Angew Chem Int Ed Engl 2024; 63:e202402950. [PMID: 38512110 DOI: 10.1002/anie.202402950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/11/2024] [Accepted: 03/21/2024] [Indexed: 03/22/2024]
Abstract
The electrochemical synthesis of ethylene oxide (EO) using ethylene and water under ambient conditions presents a low-carbon alternative to existing industrial production process. Yet, the electrocatalytic ethylene epoxidation route is currently hindered by largely insufficient activity, EO selectivity, and long-term stability. Here we report a single atom Ru-doped hollandite structure KIr4O8 (KIrRuO) nanowire catalyst for efficient EO production via a chloride-mediated ethylene epoxidation process. The KIrRuO catalyst exhibits an EO partial current density up to 0.7 A cm-2 and an EO yield as high as 92.0 %. The impressive electrocatalytic performance towards ethylene epoxidation is ascribed to the modulation of electronic structures of adjacent Ir sites by single Ru atoms, which stabilizes the *CH2CH2OH intermediate and facilitates the formation of active Cl2 species during the generation of 2-chloroethanol, the precursor of EO. This work provides a single atom modulation strategy for improving the reactivity of adjacent metal sites in heterogeneous electrocatalysts.
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Affiliation(s)
- Hanyu Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shuo Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yanpeng Song
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yang Zhao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Zhenyu Li
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yuxiang Shen
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhangquan Peng
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Dunfeng Gao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Guoxiong Wang
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xinhe Bao
- State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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Chi M, Ke J, Liu Y, Wei M, Li H, Zhao J, Zhou Y, Gu Z, Geng Z, Zeng J. Spatial decoupling of bromide-mediated process boosts propylene oxide electrosynthesis. Nat Commun 2024; 15:3646. [PMID: 38684683 PMCID: PMC11059342 DOI: 10.1038/s41467-024-48070-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 04/19/2024] [Indexed: 05/02/2024] Open
Abstract
The electrochemical synthesis of propylene oxide is far from practical application due to the limited performance (including activity, stability, and selectivity). In this work, we spatially decouple the bromide-mediated process to avoid direct contact between the anode and propylene, where bromine is generated at the anode and then transferred into an independent reactor to react with propylene. This strategy effectively prevents the side reactions and eliminates the interference to stability caused by massive alkene input and vigorously stirred electrolytes. As expected, the selectivity for propylene oxide reaches above 99.9% with a remarkable Faradaic efficiency of 91% and stability of 750-h (>30 days). When the electrode area is scaled up to 25 cm2, 262 g of pure propylene oxide is obtained after 50-h continuous electrolysis at 6.25 A. These findings demonstrate that the electrochemical bromohydrin route represents a viable alternative for the manufacture of epoxides.
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Grants
- This work was supported by National Key Research and Development Program of China (2021YFA1500500, 2019YFA0405600), National Science Fund for Distinguished Young Scholars (21925204), NSFC (U19A2015, 22221003, 22250007, and 22209161), Provincial Key Research and Development Program of Anhui (202004a05020074), CAS project for young scientists in basic research (YSBR-051), K. C. Wong Education (GJTD-2020-15), Collaborative Innovation Program of Hefei Science Center, CAS (2022HSC-CIP004), the Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy (YLU-DNL Fund 2022012), International Partnership Program of Chinese Academy of Sciences (123GJHZ2022101GC), USTC Research Funds of the Double First-Class Initiative (YD2340002002, YD9990002014), and Fundamental Research Funds for the Central Universities.
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Affiliation(s)
- Mingfang Chi
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Jingwen Ke
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Yan Liu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Miaojin Wei
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Hongliang Li
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Jiankang Zhao
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Yuxuan Zhou
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Zhenhua Gu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Zhigang Geng
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China.
| | - Jie Zeng
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China.
- CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China.
- Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China.
- Department of Chemical Physics, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China.
- School of Chemistry & Chemical Engineering, Anhui University of Technology, 243002, Ma'anshan, Anhui, P. R. China.
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Zhang Q, Si Z, Zhang Y, Deng Y, She X, Yu Q. Copper Electrocatalyst Produced by Cu 2(OH) 2CO 3-Mediated In Situ Deposition for Diluted CO 2 Reduction to Multicarbon Products. Inorg Chem 2024; 63:6445-6452. [PMID: 38523443 DOI: 10.1021/acs.inorgchem.4c00279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/26/2024]
Abstract
Pure CO2 is commonly used in most of the current studies for electrochemical CO2 reduction which will need a further cost of gas purification and separation. However, the limited works on diluted CO2 reduction are focused on CO or CH4 production other than C2 products. In this work, copper electrocatalysts were prepared by Cu2(OH)2CO3-mediated in situ deposition for diluted CO2 reduction to multicarbon products. Using in situ Raman spectroscopy, constant amounts of CO and OH* were observed on the catalyst surface, which could effectively suppress the high kinetics of hydrogen evolution and promote C-C coupling, especially under the condition of diluted CO2 reduction. The optimized Cu catalyst achieves a C2 Faradaic efficiency as high as 60.72% in the presence of merely 25% CO2, which is almost equivalent to that observed with pure CO2.
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Affiliation(s)
- Qiankang Zhang
- Institute for Energy Research, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Zhanbo Si
- Institute for Energy Research, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Ying Zhang
- Institute for Energy Research, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Yilin Deng
- Institute for Energy Research, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Xiaojie She
- Institute for Energy Research, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
| | - Qing Yu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, PR China
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Yu Z, Liu L. Recent Advances in Hybrid Seawater Electrolysis for Hydrogen Production. Adv Mater 2023:e2308647. [PMID: 38143285 DOI: 10.1002/adma.202308647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 12/04/2023] [Indexed: 12/26/2023]
Abstract
Seawater electrolysis (SWE) is a promising and potentially cost-effective approach to hydrogen production, considering that seawater is vastly abundant and SWE is able to combine with offshore renewables producing green hydrogen. However, SWE has long been suffering from technical challenges including the high energy demand and interference of chlorine chemistry, leading electrolyzers to a low efficiency and short lifespan. In this context, hybrid SWE, operated by replacing the energy-demanding oxygen evolution reaction and interfering chlorine evolution reaction (CER) with a thermodynamically more favorable anodic oxidation reaction (AOR) or by designing innovative electrolyzer cells, has recently emerged as a better alternative, which not only allows SWE to occur in a safe and energy-saving manner without the notorious CER, but also enables co-production of value-added chemicals or elimination of environmental pollutants. This review provides a first account of recent advances in hybrid SWE for hydrogen production. The substitutional AOR of various small molecules or redox mediators, in couple with hydrogen evolution from seawater, is comprehensively summarized. Moreover, how the electrolyzer cell design helps in hybrid SWE is briefly discussed. Last, the current challenges and future outlook about the development of the hybrid SWE technology are outlined.
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Affiliation(s)
- Zhipeng Yu
- Frontier Research Center, Songshan Lake Materials Laboratory, Dongguan, 523808, P. R. China
- Clean Energy Cluster, International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, Braga, 4715-330, Portugal
| | - Lifeng Liu
- Frontier Research Center, Songshan Lake Materials Laboratory, Dongguan, 523808, P. R. China
- Clean Energy Cluster, International Iberian Nanotechnology Laboratory (INL), Avenida Mestre Jose Veiga, Braga, 4715-330, Portugal
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