| HUANG Xi,ZENG Xian-guang,CAO Kun,HUANG Wen-heng.Preparation and Properties of Co-LDHM Superhydrophobic Films by Electrodeposition[J],51(7):314-323 |
| Preparation and Properties of Co-LDHM Superhydrophobic Films by Electrodeposition |
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| DOI：10.16490/j.cnki.issn.1001-3660.2022.07.031 |
| KeyWord:ZIF-NFA Co-LDHM stainless steel mesh superhydrophobic |
| Author | Institution |
| HUANG Xi |
Institute of Material and Science Engineering, Sichuan University of Science & Engineering, Sichuan Zigong , China;School of Chemistry and Chemical Engineering, Neijiang Normal University, Sichuan Neijiang , China |
| ZENG Xian-guang |
Institute of Material and Science Engineering, Sichuan University of Science & Engineering, Sichuan Zigong , China;Material Corrosion and Protection Key Laboratory of Sichuan Province, Sichuan Zigong , China |
| CAO Kun |
School of Chemistry and Chemical Engineering, Neijiang Normal University, Sichuan Neijiang , China |
| HUANG Wen-heng |
School of Chemistry and Chemical Engineering, Neijiang Normal University, Sichuan Neijiang , China |
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| Abstract: |
| This paper aims to form the stable cobalt layered double hydroxide microspheres (Co-LDHM) superhydrophobic films on stainless steel wire by electrodeposition method. Firstly, ZIFs nanoflake array (ZIF-NFA) was formed on stainless steel mesh by first electrodeposition, and then nano-sized Co-LDHM was created by secondary electrodeposition with ZIF-NFA. Finally, the surface energy was reduced by soaking silane. Futhermore, the fouling resistance, friction resistance, oil-water separation and corrosion resistance of superhydrophobic modified stainless steel net were evaluated by sputtering test, sandpaper abrasion test, oil-water separation test and electrochemical test. The hydrophobic degree of the stainless steel mesh surface and the morphology and structure of the film surface were analyzed by contact angle, SEM, EDS, XRD and FTIR. The surface of the stainless steel mesh which prepared by two step electrodeposition method was similar to bath ball, with multi-level surface morphology of micron/nano. Test of contact angle shows that the prepared films reflect good superhydrophobic properties, the static contact angle is 159.4°±2°; after 30 cycles of friction resistance test, the surface contact angle is 141.3°±2°, indicating that it still has high hydrophobicity; the oil-water separation efficiency was all over 97%, and the separation rate remained 96% after repeated for more than 20 times, which indicated that the films has an excellent abrasion resistance, corrosion resistance and good fouling resistance. The Co-LDHM superhydrophobic stainless steel mesh constructed by two-step electrodeposition method boasts excellent superhydrophobic properties, which provides a new idea for the application of MOFs in the preparation of superhydrophobic materials. |
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