MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels
MXenes are a new class of two-dimensional (2D) materials with promising applications in many fields because of their layered structure and unique performance. In particular, the physical barrier properties of two-dimensional nanosheets make them suitable as barriers against hydrogen. Herein, MXene c...
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| Format: | Article |
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MDPI AG
2021-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/10/2737 |
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| author | Kejun Shi Xinyu Meng Shu Xiao Guohua Chen Hao Wu Chilou Zhou Saihua Jiang Paul K. Chu |
| author_facet | Kejun Shi Xinyu Meng Shu Xiao Guohua Chen Hao Wu Chilou Zhou Saihua Jiang Paul K. Chu |
| author_sort | Kejun Shi |
| collection | DOAJ |
| description | MXenes are a new class of two-dimensional (2D) materials with promising applications in many fields because of their layered structure and unique performance. In particular, the physical barrier properties of two-dimensional nanosheets make them suitable as barriers against hydrogen. Herein, MXene coatings were prepared on pipe steel by a simple spin-coating process with a colloidal suspension. The hydrogen resistance was evaluated by electrochemical hydrogen permeation tests and slow strain rate tests, and the corrosion resistance was assessed by potentiodynamic polarization. The results reveal that MXene coatings offer excellent hydrogen resistance and corrosion protection by forming a barrier against diffusion. Experimentally, the hydrogen permeability of the MXene coating is one third of the substrate, and the diffusion coefficient decreases as well. The mechanistic study indicates that the hydrogen resistance of the MXene coatings is affected by the number of spin-coated layers, while the concentration of the d-MXene colloidal suspension determines the thickness of a single coating. However, damage to the sample surface caused by the colloidal suspension that contains H<sup>+</sup> and F<sup>−</sup> may limit the improvement of the hydrogen resistance. This paper reveals a new application of 2D MXene materials as a novel efficient barrier against hydrogen permeation and the subsequent alleviation of hydrogen embrittlement in the steel substrate. |
| first_indexed | 2024-03-10T06:18:59Z |
| format | Article |
| id | doaj.art-36cbb9d80f4544159796696de7b3070e |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T06:18:59Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-36cbb9d80f4544159796696de7b3070e2023-11-22T19:25:54ZengMDPI AGNanomaterials2079-49912021-10-011110273710.3390/nano11102737MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe SteelsKejun Shi0Xinyu Meng1Shu Xiao2Guohua Chen3Hao Wu4Chilou Zhou5Saihua Jiang6Paul K. Chu7Institute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaInstitute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaInstitute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaInstitute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaInstitute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaInstitute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaInstitute of Safety Science & Engineering, South China University of Technology, Guangzhou 510641, ChinaDepartment of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, ChinaMXenes are a new class of two-dimensional (2D) materials with promising applications in many fields because of their layered structure and unique performance. In particular, the physical barrier properties of two-dimensional nanosheets make them suitable as barriers against hydrogen. Herein, MXene coatings were prepared on pipe steel by a simple spin-coating process with a colloidal suspension. The hydrogen resistance was evaluated by electrochemical hydrogen permeation tests and slow strain rate tests, and the corrosion resistance was assessed by potentiodynamic polarization. The results reveal that MXene coatings offer excellent hydrogen resistance and corrosion protection by forming a barrier against diffusion. Experimentally, the hydrogen permeability of the MXene coating is one third of the substrate, and the diffusion coefficient decreases as well. The mechanistic study indicates that the hydrogen resistance of the MXene coatings is affected by the number of spin-coated layers, while the concentration of the d-MXene colloidal suspension determines the thickness of a single coating. However, damage to the sample surface caused by the colloidal suspension that contains H<sup>+</sup> and F<sup>−</sup> may limit the improvement of the hydrogen resistance. This paper reveals a new application of 2D MXene materials as a novel efficient barrier against hydrogen permeation and the subsequent alleviation of hydrogen embrittlement in the steel substrate.https://www.mdpi.com/2079-4991/11/10/2737MXeneshydrogen barrierhydrogen embrittlementcorrosion resistancecoatings |
| spellingShingle | Kejun Shi Xinyu Meng Shu Xiao Guohua Chen Hao Wu Chilou Zhou Saihua Jiang Paul K. Chu MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels Nanomaterials MXenes hydrogen barrier hydrogen embrittlement corrosion resistance coatings |
| title | MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels |
| title_full | MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels |
| title_fullStr | MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels |
| title_full_unstemmed | MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels |
| title_short | MXene Coatings: Novel Hydrogen Permeation Barriers for Pipe Steels |
| title_sort | mxene coatings novel hydrogen permeation barriers for pipe steels |
| topic | MXenes hydrogen barrier hydrogen embrittlement corrosion resistance coatings |
| url | https://www.mdpi.com/2079-4991/11/10/2737 |
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