Wettability, structural and optical properties investigation of TiO2 nanotubular arrays

Zalnezhad, E. and Maleki, E. and Banihashemian, S.M. and Park, J.W. and Kim, Y.B. and Sarraf, M. and Sarhan, A.A.D. and Ramesh, S. (2016) Wettability, structural and optical properties investigation of TiO2 nanotubular arrays. Materials Research Bulletin, 78. pp. 179-185. ISSN 00255408

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Official URL: http://dx.doi.org/10.1016/j.materresbull.2016.01.0...

Abstract

In this study, the effect of microstructural evolution of TiO2 nanotubular arrays on wettability and optical properties was investigated. Pure titanium was deposited on silica glass by PVD magnetron sputtering technique. The Ti coated substrates were anodized in an electrolyte containing NH4F/glycerol. The structures of the ordered anodic TiO2 nanotubes (ATNs) as long as 175 nm were studied using field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). The result shows a sharp peak in the optical absorbance spectra around the band gap energy, 3.49–3.42 eV for annealed and non-annealed respectively. The thermal process induced growth of the grain size, which influence on the density of particles and the index of refraction. Furthermore, the wettability tests' result displays that the contact angle of intact substrate (θ = 74.7°) was decreased to 31.4° and 17.4° after anodization for amorphous and heat treated (450 °C) ANTs coated substrate, respectively.

Item Type: Article
Uncontrolled Keywords: A. Ceramics; A. Thin films; B. Vapor deposition; C. X-ray diffraction; C. Electron microscopy
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 16 May 2018 06:07
Last Modified: 16 May 2018 06:07
URI: http://eprints.um.edu.my/id/eprint/18696

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