Photocatalytic Deposition of Hydroxyapatite onto a Titanium Dioxide Nanotubular Layer with Fine Tuning of Layer Nanoarchitecture
authors Ulasevich, SA; Poznyak, SK; Kulak, AI; Lisenkov, AD; Starykevich, M; Skorb, EV
nationality International
journal LANGMUIR
keywords CALCIUM-PHOSPHATE COATINGS; ANODIC TIO2 NANOTUBES; ELECTROCHEMICAL DEPOSITION; COMPOSITE COATINGS; IMPLANTS; SURFACES; GROWTH; FILMS; DEGRADATION; ELECTRODES
abstract A new effective method of photocatalytic deposition of hydroxyapatite (HA) onto semiconductor substrates is proposed. A highly ordered nanotubular TiO2 (TNT) layer formed on titanium via its anodization is chosen as the photoactive substrate. The method is based on photodecomposition of the phosphate anion precursor, triethylphosphate (TEP), on the semiconductor surface with the following reaction of formed phosphate anions with calcium cations presented in the solution. HA can be deposited only on irradiated areas, providing the possibility of photoresistfree HA patterning. It is shown that HA deposition can be controlled via pH, light intensity, and duration of the process. Energy-dispersive X-ray spectroscopy profile analysis and glow discharge optical emission spectroscopy of HA-modified TNT prove that HA deposits over the entire TNT depth. High is proven by protein adsorption and pre-osteoblast cell growth.
publisher AMER CHEMICAL SOC
issn 0743-7463
year published 2016
volume 32
issue 16
beginning page 4016
ending page 4021
digital object identifier (doi) 10.1021/acs.langmuir.6b00297
web of science category Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, Multidisciplinary
subject category Chemistry; Materials Science
unique article identifier WOS:000375243300024
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journal impact factor 3.557
5 year journal impact factor 3.702
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