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- Title
Fabrication of Tremella-Like Zn-Based Composite Coating with Improved Photocatalytic Degradation Performance and Robust Superhydrophobicity.
- Authors
Zhang, Lu-lu; Ma, Wen-chao; Liu, Yan-cai; Cao, Hong-wei; An, Ya-qiong; Huang, Hai-fan; Zhang, Hao-lin; Qiao, Jiang-hao; Li, Xiao-wei; Liu, Hong-tao
- Abstract
In this paper, as-received Zn powder and as-prepared Zn@(ZnWO4/ZnO) core–shell powder were used as feedstocks for plasma spraying to prepare Zn-based composite coatings and nano-ZnO was co-deposited by chemical vapor deposition induced by plasma spraying. The composition and morphology were controllable within certain range by plasma spraying power. The photocatalytic activities of the coatings were analyzed by the degradation efficiency of methyl orange (MO) solution. It was found the photocatalytic activity can be improved with ZnWO4 decoration. The Zn/ZnO/ZnWO4 coating which presented tremella-like surface morphology was testified to have the best photocatalytic activity under UV light irradiation among all coatings. On the other hand, the chemical surface modification with 1H,1H,1H,2H-perfluorodecyltriethoxysilane (FAS-17) was implemented to produce superhydrophobic coatings. Among all modified coatings, the ZnWO4-containing coating with tremella-like surface structure presented the best superhydrophobicity. By the cyclic wetting and tape adhesion experiments, the tremella-like structure was proved to make a great improvement on the robustness of the Zn-based superhydrophobic coatings. The superhydrophobic and photocatalytic properties provide the possibility for the application of the coating in the fields of antifouling, antibacterial, and photocatalytic degradation of organics.
- Subjects
COMPOSITE coating; PLASMA sprayed coatings; PHOTODEGRADATION; PLASMA spraying; CHEMICAL vapor deposition; PHOTOCATALYSTS
- Publication
Journal of Thermal Spray Technology, 2024, Vol 33, Issue 5, p1694
- ISSN
1059-9630
- Publication type
Article
- DOI
10.1007/s11666-024-01770-y