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Fabrication of antibacterial and anti-corrosive zirconia ceramics with extreme wettability by facile laser-based surface modification

文献类型： 外文期刊

作者： Liu, Chao 1 ; Fu, Jiajun 1 ; Li, Li 3 ; Wang, Huixin 3 ; Pei, Xianjun 1 ; Zhang, Tairui 1 ; Wang, Qinghua 1 ;

作者机构： 1.Southeast Univ, Sch Mech Engn, Nanjing 211189, Peoples R China

2.Jiangsu Key Lab Design & Manufacture Micronano Bio, Nanjing 211189, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Agr Facil & Equipment, Nanjing 210014, Peoples R China

4.Minist Agr & Rural Affairs, Key Lab Protected Agr Engn Middle & Lower Reaches, Nanjing 210014, Peoples R China

关键词： Zirconia ceramics; Laser texturing; Superhydrophobic; Antibacterial capability; Corrosion resistance

期刊名称：CERAMICS INTERNATIONAL （ 影响因子：5.2； 五年影响因子：4.5 ）

ISSN： 0272-8842

年卷期： 2024 年 50 卷 13 期

页码：

收录情况： SCI

摘要： The relatively poor antibacterial capability of intrinsic hydrophilic zirconia ceramics limits its wide applications in the field of biological implants. To further exploit and enhance the biocompatibility of zirconia ceramics, a facile silicone oil-assisted laser-heat process was developed to prepare the superhydrophobic zirconia ceramic surface with microcolumn array structure and low surface energy. The characterization results indicated that the micro/nano hierarchical structure was induced by laser texturing on the zirconia ceramic surface, and part of the crystal structure was transformed from tetragonal phase to monoclinic phase. The deposition of carboncontaining hydrophobic functional groups and silicon atoms on the surface was accelerated and the surface energy was significantly reduced by silicone oil-assisted heat treatment. The surface wettability was transitioned from hydrophilicity to superhydrophobicity after the silicone oil-assisted laser-heat process. The bacterial adhesion can be effectively blocked due to the air layer trapped by the surface micro/nanostructures, and the surface antibacterial rate was increased by more than 80%. The ionic corrosion was also slowed down under the combination of the air layer and the reduced solid-liquid contact area on the superhydrophobic surface, which improved the corrosion resistance of the surface. The enhanced antibacterial capability and corrosion resistance on the superhydrophobic zirconia ceramic surfaces prepared by the developed process are expected to provide a key avenue for biomedical applications.

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