Effect of Anodizing Process and Modification on Hydrophobicity of TiO<sub>2</sub> Nanotube Array Film

LI Lei; JIANG Shaoqun; WANG Gang; XU Yi; ZHOU Zehua

doi:10.11973/jxgccl202104002

Materials and Mechanical Engineering > 2021 > 45(4): 8-12,18. > DOI: 10.11973/jxgccl202104002

LI Lei, JIANG Shaoqun, WANG Gang, XU Yi, ZHOU Zehua. Effect of Anodizing Process and Modification on Hydrophobicity of TiO₂ Nanotube Array Film[J]. Materials and Mechanical Engineering, 2021, 45(4): 8-12,18. DOI: 10.11973/jxgccl202104002

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Effect of Anodizing Process and Modification on Hydrophobicity of TiO₂ Nanotube Array Film

1. College of Mechanics and Materials, Hohai University, Nanjing 211100, China;
2. Ocean and Offshore Engineering Research Institute of Hohai University, Nantong 226019, China

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Received Date: January 10, 2021
Revised Date: March 10, 2021

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Abstract

Abstract

The TiO₂ nanotube array film was prepared on the titanium sheet surface by anodizing method, and the microstructure of the film prepared at different anodizing voltages (15-25 V) and times (0.5-2 h)was studied. Then the film was modified by stearic acid. The wetting performance of the film before and after modification was analyzed. The results show that the average diameter and tube spacing of TiO₂ nanotube increased with increasing anodizing voltage, but did not changed obviously with the anodizing time. The surface structure uniformity was affected by the anodizing time, and the structure uniformity after anodizing for 2 h was realtively good. The surface of the film before modification was hydrophilic, and after modification was hydrophobic. The more hydrophilic the film before modification, the more hydrophobic after modification. The anodizing time had a greater effect on the water contact angle of the modified film. The films prepared by anodizing at different voltages for 2 h were all superhydrophobic after modification. The average water contact angle of the modified film prepared at 20 V/2 h was the highest, and the value was 159.7°.
- anodizing method,
- TiO₂ nanotube array,
- modification,
- hydrophobicity,
- hydrophilcity

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Effect of Anodizing Process and Modification on Hydrophobicity of TiO2 Nanotube Array Film

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