Dependence of calcium phosphate formation on nanostructure of rutile TiO2(110) surfaces

被引：2
|
作者：
Sasahara, Akira [1 ]
Murakami, Tatsuya [2 ]
Tomitori, Masahiko [2 ]
机构：
[1] Kobe Univ, Kobe, Hyogo 6578501, Japan
[2] Japan Adv Inst Sci & Technol, Nomi, Ishikawa 9231292, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2018年 / 57卷 / 11期
基金：
日本学术振兴会;
关键词：
SIMULATED BODY-FLUID; OCTACALCIUM PHOSPHATE; PHOTOELECTRON-SPECTROSCOPY; APATITE FORMATION; AQUEOUS-SOLUTIONS; TITANIUM-DIOXIDE; IN-VITRO; ADSORPTION; TIO2; XPS;
D O I：
10.7567/JJAP.57.115501
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To demonstrate the effect of the surface nanostructures on the osteoconductivity of titanium dioxide (TiO2), formation of calcium phosphate on the rutile TiO2(110) surfaces in Hanks' balanced salt solution (HBSS) was examined using X-ray photoelectron spectroscopy (XPS) and atomic force microscopy (AFM) techniques. When the TiO2(110) surfaces annealed in air were immersed in HBSS, calcium phosphate particles were formed on the surface. The calcium phosphate formation was suppressed by further annealing of the surfaces in O-2 before the immersion in HBSS. The suppression of calcium phosphate formation is attributed to the transformation of the topmost layer of the air-annealed TiO2(110) surface from amorphous to rutile. The arrangement of the phosphate ions adsorbed on the rutile (1 x 1) surface does not match the hydrogen phosphate ion lattice of the CaHPO4 sheet of brushite. (C) 2018 The Japan Society of Applied Physics
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页数：7
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