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Zhang H, Zhang R, Hu S, Yang K, Sun C, Wang Q, Tang Y. Electroreduction of CO 2 on Cu, Fe, or Ni-doped Diamane Sheets: A DFT Study. Chemistry 2024; 30:e202303995. [PMID: 38246877 DOI: 10.1002/chem.202303995] [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: 11/30/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 01/23/2024]
Abstract
Poor mass transfer behavior and inherent activity limit the efficiency of traditional catalysts in electrocatalyzing carbon dioxide reduction reactions. However, the development of novel nanomaterials provides new strategies to solve the above problems. Herein, we propose novel single-metal atom catalysts, namely diamane-based electrocatalysts doped with Cu, Fe, and Ni, explored through density functional theory (DFT) calculations. We thoroughly investigated the doping pattern and energetics for different dopants. Furthermore, we systematically investigated the conversion process of CO2 to C1 or C2+ products, utilizing the free energy analysis of reaction pathways. Our results reveal that dopants could only be introduced into diamane following a specific pattern. Dopants significantly enhance the CO2 adsorption ability of diamane, with Fe and Ni proving notably more effective than Cu. After CO2 adsorption, Cu- and Fe-doped diamane prefer to catalyze CO2RR, while Ni-doped diamane favors hydrogen evolution reaction (HER). The C-C coupling reaction on Cu-hollow diamane, Cu-bridge diamane, and Fe-hollow diamane tends to be from C2+ products. Among all examined catalysts, Cu-hollow diamane shows better electro-catalytic performance. Our study demonstrates the feasibility of and contributes to the development of diamane-based electro-catalysts for CO2RR.
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Affiliation(s)
- Hongping Zhang
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Chengdu, 610106, Sichuan, China
| | - Run Zhang
- School of Materials and Chemistry, Southwest University of Science and Technology, Sichuan, 621010, China
| | - Shuchun Hu
- School of Materials and Environmental Engineering, Chengdu Technological University, Sichuan, 610031, China
| | - Kun Yang
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Chengdu, 610106, Sichuan, China
| | - Chenghua Sun
- Department of Chemistry and Biotechnology, and Center for Translational Atomaterials, Faculty of Science Engineering & Technology, Swinburne University of Technology, Hawthorn, Victoria, 3122, Australia
| | - Qingyuan Wang
- School of Mechanical Engineering, Institute for Advanced Study, Chengdu University, Chengdu, 610106, Sichuan, China
| | - Youhong Tang
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, South Australia, 5042, Australia
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Zheng Z, Deng F, Su Z, Zhan H, Wang L. Analysis of the vibrational characteristics of diamane nanosheet based on the Kirchhoff plate model and atomistic simulations. Discov Nano 2023; 18:108. [PMID: 37651045 PMCID: PMC10471560 DOI: 10.1186/s11671-023-03887-5] [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: 06/30/2023] [Accepted: 08/21/2023] [Indexed: 09/01/2023]
Abstract
Single layer diamond-diamane, has been reported with excellent mechanical properties. In this work, molecular dynamics (MD) simulation and Kirchhoff plate model are utilized to investigate the vibrational characteristics of diamane sheets. The mechanical parameters of diamane sheets, including bending stiffness, Young's modulus, Poisson's ratio and coefficient of thermal expansion, are calibrated by using MD simulations. The natural frequencies and corresponding modal shapes of the diamane sheets predicted by the Kirchhoff plate model agree well with that obtained from the MD simulations. It is found that the edges exert marginal effect on the modal shapes when free boundary conditions are applied. Additionally, the Kirchhoff plate model considering the thermal expansion provides reasonable prediction for the natural frequencies of the diamane sheets with all boundary clamped under varying temperatures. This study offers valuable insights into the vibrational properties of diamane sheets, from both a simulation and theoretical standpoint. The findings would be beneficial for the design of nanoscale mechanical resonators utilizing these novel carbon materials.
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Affiliation(s)
- Zhuoqun Zheng
- State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Fengyu Deng
- State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Zhu Su
- State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Haifei Zhan
- College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, 310058, China
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, 4001, Australia
| | - Lifeng Wang
- State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China.
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