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Sun Y, Xie J, Fu Z, Zhang H, Yao Y, Zhou Y, Wang X, Wang S, Gao X, Tang Z, Li S, Wang X, Nie K, Yang Z, Yan Y. Boosting CO 2 Electroreduction to C 2H 4 via Unconventional Hybridization: High-Order Ce 4+ 4f and O 2p Interaction in Ce-Cu 2O for Stabilizing Cu . ACS NANO 2023. [PMID: 37410800 DOI: 10.1021/acsnano.3c03952] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
Efficient conversion of carbon dioxide (CO2) into value-added materials and feedstocks, powered by renewable electricity, presents a promising strategy to reduce greenhouse gas emissions and close the anthropogenic carbon loop. Recently, there has been intense interest in Cu2O-based catalysts for the CO2 reduction reaction (CO2RR), owing to their capabilities in enhancing C-C coupling. However, the electrochemical instability of Cu+ in Cu2O leads to its inevitable reduction to Cu0, resulting in poor selectivity for C2+ products. Herein, we propose an unconventional and feasible strategy for stabilizing Cu+ through the construction of a Ce4+ 4f-O 2p-Cu+ 3d network structure in Ce-Cu2O. Experimental results and theoretical calculations confirm that the unconventional orbital hybridization near Ef based on the high-order Ce4+ 4f and 2p can more effectively inhibit the leaching of lattice oxygen, thereby stabilizing Cu+ in Ce-Cu2O, compared with traditional d-p hybridization. Compared to pure Cu2O, the Ce-Cu2O catalyst increased the ratio of C2H4/CO by 1.69-fold during the CO2RR at -1.3 V. Furthermore, in situ and ex situ spectroscopic techniques were utilized to track the oxidation valency of copper under CO2RR conditions with time resolution, identifying the well-maintained Cu+ species in the Ce-Cu2O catalyst. This work not only presents an avenue to CO2RR catalyst design involving the high-order 4f and 2p orbital hybridization but also provides deep insights into the metal-oxidation-state-dependent selectivity of catalysts.
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Affiliation(s)
- Yanfei Sun
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Jiangzhou Xie
- School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Zhenzhen Fu
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Huiying Zhang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yebo Yao
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yixiang Zhou
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Xiaoxuan Wang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Shiyu Wang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Xueying Gao
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Zheng Tang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Shuyuan Li
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Xiaojun Wang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhiyu Yang
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Yiming Yan
- State Key Lab of Organic-Inorganic Composites, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
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Zhao F, Wang D, Li X, Yin Y, Wang C, Qiu L, Yu J, Chang H. Enhancement of Cs on Co 3O 4 for N 2O Catalytic Decomposition: N 2O Activation and O 2 Desorption. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Feilin Zhao
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Dongdong Wang
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Xing Li
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Yimeng Yin
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Chizhong Wang
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Lei Qiu
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Jie Yu
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
| | - Huazhen Chang
- School of Environment and Natural Resources, Renmin University of China, Beijing 100872, China
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Xiong Y, Zhao Y, Qi X, Qi J, Cui Y, Yu H, Cao Y. Strong Structural Modification of Gd to Co 3O 4 for Catalyzing N 2O Decomposition under Simulated Real Tail Gases. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2021; 55:13335-13344. [PMID: 34524807 DOI: 10.1021/acs.est.1c05052] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In this paper, Gd-promoted Co3O4 catalysts were prepared via a facile coprecipitation method for low-temperature catalytic N2O decomposition. Due to the addition of Gd, the crystallite size of Co3O4 in the Gd0.06Co catalyst surprisingly decreased to 4.9 nm, which is much smaller than most additive-modified Co3O4 catalysts. This huge change in the catalyst's textural structure endows the Gd0.06Co catalyst with a large specific surface area, plentiful active sites, and a weak Co-O bond. Hence, Gd0.06Co exhibited superior activity for catalyzing 2000 ppmv N2O decomposition, and the temperature for the complete catalytic elimination of N2O was as low as 350 °C. Meanwhile, compared with pure Co3O4, Ea decreased from 77.4 to 46.8 kJ·mol-1 and TOF of the reaction increased from 1.16 × 10-3 s-1 to 5.13 × 10-3 s-1 at 300 °C. Moreover, Gd0.06Co displayed a quite stable catalytic performance in the presence of 100 ppmv NO, 5 vol % O2, and 2 vol % H2O.
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Affiliation(s)
- Ying Xiong
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Yumei Zhao
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Xingkun Qi
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Jiayi Qi
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Yuanyuan Cui
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Haibiao Yu
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
| | - Ying Cao
- College of Chemistry, Liaoning University, Shenyang 110036, PR China
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