期刊
CHEMICAL ENGINEERING JOURNAL
卷 409, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.128142
关键词
Superhydrophobicity; T-shape; Inorganic alumina coatings; Plasma electrolytic oxidation; Gradient electric field
资金
- National Materials Genome Project [2016YFB0700600]
- Postdoctoral Innovative Talent Support Program [BX20190001]
- Shenzhen Science and Technology Research Grant [JCYJ20170818150601930]
- City University of Hong Kong Strategic Research Grants (SRG) [7005105, 7005264]
- Hong Kong Innovation and Technology Fund (ITF) [ITS/452/17FP]
- Guangdong -Hong Kong Technology Cooperation Funding Scheme (TCFS) [GHP/085/18SZ]
- Hong Kong Research Grants Council (RGC) General Research Funds (GRF) [CityU 11205617]
Utilizing plasma electrolytic oxidation (PEO) technique to prepare superhydrophobic inorganic alumina coatings with T-shape micro/nano structures in a single step without organic modification. The coatings exhibit excellent heat resistance, corrosion resistance, and superhydrophobicity, showing potential applications in various fields due to their simplicity, economy, and robust performance under different environmental conditions.
T-shape structure can make inorganic materials superhydrophobic, but conventional preparation methods based on etching is usually costly and unscalable. In this work, a facile and scalable technique utilizing plasma electrolytic oxidation (PEO) is employed to prepare superhydrophobic inorganic alumina coatings. By optimizing the gradient electric field, the etching behavior of OH- is tunable so that a T-shape micro/nano structured alumina coating can be prepared in one step. Without any organic modification, the coating shows a water contact angle (CA) of 150 degrees +/- 3 degrees and water rolling angle (RA) of 8 degrees +/- 2 degrees. The prepared inorganic ceramic coating remains superhydrophobicity under a harsh environment including 360 days of sunlight, and they have excellent corrosion resistance and can bear long-time flame burning. The preparation technique is simple and economical thereby boding well for great potentials in applications of solar cells, electronic devices, etc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据