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Lin L, Shi P, Yao L, Xie K, Tao H, Zhang Z, Wang Y. First-principles study on CO oxidation on CuO(111) surface prefers the Eley-Rideal or Langmuir-Hinshelwood pathway. NANOTECHNOLOGY 2022; 33:205504. [PMID: 35081528 DOI: 10.1088/1361-6528/ac4f19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
Using the first-principles approach, we investigated the electronic and chemical properties of cupric oxide CuO (110) and CuO (111) and substantiated their catalytic activity toward CO oxidation. It is found that CuO (111) surface is more stable than the CuO (110) surface. We firstly study that adsorption of CO and O2on perfect, oxygen vacancies and Cu-anchored CuO (111) surface. It is found that adsorption of CO and O2molecules are chemical. Then we selected the most stable adsorption structure of CO/O2to investigated the CO oxidation mechanism on different surface, here we choose to study the Langmuir-Hinshelwood (LH) mechanism and Eley-Rideal (ER) mechanism. The results show that perfect and OvacancyCuO (111) surface is more inclined to LH mechanism, while the Cu-anchored CuO (111) surface is more inclined to ER mechanism. The results show that CuO catalyst is very effective for CO oxidation. Our work provides a deep understanding for the search of economical and reasonable CO oxidation catalysts.
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Affiliation(s)
- Long Lin
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
- School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo 454000, People's Republic of China
| | - Pei Shi
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
| | - Linwei Yao
- School of Information Science and Technology, Northwest University, Xi'an 710127, People's Republic of China
| | - Kun Xie
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
| | - Hualong Tao
- Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning Province, People's Republic of China
| | - Zhanying Zhang
- Henan Key Laboratory of Materials on Deep-Earth Engineering, School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, Henan, People's Republic of China
| | - Yanfang Wang
- School of Mathematics and Informatics, Henan Polytechnic University, Jiaozuo 454000, People's Republic of China
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