Structure and Properties of - Nanocomposite Films for Biomedical Applications | Zendy

Lin Zhang | Zendy; Zhihua Sun | Zendy; Fengmei Yu | Zendy; Hongbin Chen | Zendy

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Structure and Properties of - Nanocomposite Films for Biomedical Applications

Author(s) -

Lin Zhang,

Zhihua Sun,

Fengmei Yu,

Hongbin Chen

Publication year - 2011

Publication title -

bioinorganic chemistry and applications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.865

H-Index - 35

eISSN - 1565-3633

pISSN - 1687-479X

DOI - 10.1155/2011/853048

Subject(s) - x ray photoelectron spectroscopy , nanocomposite , doping , microstructure , band gap , scanning electron microscope , grain size , sputtering , spectroscopy , materials science , analytical chemistry (journal) , semiconductor , nanotechnology , thin film , chemical engineering , chemistry , optoelectronics , composite material , physics , chromatography , quantum mechanics , engineering

The hemocompatibility of La 2 O 3 -doped TiO 2 films with different concentration prepared by radio frequency (RF) sputtering was studied. The microstructures and blood compatibility of TiO 2 films were investigated by scan electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV-visible optical absorption spectroscopy, respectively. With the increasing of the La 2 O 3 concentrations, the TiO 2 films become smooth, and the grain size becomes smaller. Meanwhile, the band gap of the samples increases from 2.85 to 3.3 eV with increasing of the La 2 O 3 content in TiO 2 films from 0 to 3.64%. La 2 O 3 -doped TiO 2 films exhibit n-type semiconductor properties due to the existence of Ti 2+ and Ti 3+ . The mechanism of hemocompatibility of TiO 2 film doped with La 2 O 3 was analyzed and discussed.

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