Utilize este identificador para referenciar este registo: http://hdl.handle.net/10773/19647
Título: Photocatalytic Deposition of Hydroxyapatite onto a Titanium Dioxide Nanotubular Layer with Fine Tuning of Layer Nanoarchitecture
Autor: Ulasevich, Sviatlana A.
Poznyak, Sergey K.
Kulak, Anatoly I.
Lisenkov, Aleksey D.
Starykevich, Maksim
Skorb, Ekaterina V.
Palavras-chave: CALCIUM-PHOSPHATE COATINGS
ANODIC TIO2 NANOTUBES
ELECTROCHEMICAL DEPOSITION
COMPOSITE COATINGS
IMPLANTS
SURFACES
GROWTH
FILMS
DEGRADATION
ELECTRODES
Data: 2016
Editora: AMER CHEMICAL SOC
Resumo: 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.
Peer review: yes
URI: http://hdl.handle.net/10773/19647
DOI: 10.1021/acs.langmuir.6b00297
ISSN: 0743-7463
Versão do Editor: 10.1021/acs.langmuir.6b00297
Aparece nas coleções: CICECO - Artigos



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