Abstract
Anatase layer was derived on pure titanium substrates by the H 2O2 treatment and calcination, on which UV was irradiated in air (UVa) and in ultra pure water (UVw). The effects of the UV irradiation on in vitro apatite formation in Kokubo's simulated body fluid were interpreted in terms of the modified chemistry of the anatase layer. The UVa treatment reduced apatite formation while the contrary effects were observed for the UVw treatment. From Ols X-ray photoelectron spectroscopic (XPS) analysis, those results were correlated to the change in the relative amount of Ti-OH (basic TiOH) and Ti-O(H)-Ti (acidic Ti-OH). Combining the XPS analysis and the apatite growth characteristics, i.e., the number and size of the semi-spherical particles and their surface-coverage, derived a plausible model: proper assembly of those sites (Ti-OH and Ti-O(H)-Ti) that collect both calcium and phosphate ions together should only give rise to induction of apatite nucleation.
| Original language | English |
|---|---|
| Title of host publication | Ceramic Engineering and Science Proceedings |
| Pages | 79-84 |
| Number of pages | 6 |
| Volume | 33 |
| Edition | 6 |
| Publication status | Published - 2013 |
| Event | Advances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 - Daytona Beach, FL, United States Duration: Jan 22 2012 → Jan 27 2012 |
Other
| Other | Advances in Bioceramics and Porous Ceramics V - 36th International Conference on Advanced Ceramics and Composites, ICACC 2012 |
|---|---|
| Country | United States |
| City | Daytona Beach, FL |
| Period | 1/22/12 → 1/27/12 |
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ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
Cite this
UV-Irradiation modifies chemistry of anatase layer associated with in vitro apatite nucleation. / Uetsuki, Keita; Nakai, Shinsuke; Shirosaki, Yuki; Hayakawa, Satoshi; Osaka, Akiyoshi.
Ceramic Engineering and Science Proceedings. Vol. 33 6. ed. 2013. p. 79-84.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - UV-Irradiation modifies chemistry of anatase layer associated with in vitro apatite nucleation
AU - Uetsuki, Keita
AU - Nakai, Shinsuke
AU - Shirosaki, Yuki
AU - Hayakawa, Satoshi
AU - Osaka, Akiyoshi
PY - 2013
Y1 - 2013
N2 - Anatase layer was derived on pure titanium substrates by the H 2O2 treatment and calcination, on which UV was irradiated in air (UVa) and in ultra pure water (UVw). The effects of the UV irradiation on in vitro apatite formation in Kokubo's simulated body fluid were interpreted in terms of the modified chemistry of the anatase layer. The UVa treatment reduced apatite formation while the contrary effects were observed for the UVw treatment. From Ols X-ray photoelectron spectroscopic (XPS) analysis, those results were correlated to the change in the relative amount of Ti-OH (basic TiOH) and Ti-O(H)-Ti (acidic Ti-OH). Combining the XPS analysis and the apatite growth characteristics, i.e., the number and size of the semi-spherical particles and their surface-coverage, derived a plausible model: proper assembly of those sites (Ti-OH and Ti-O(H)-Ti) that collect both calcium and phosphate ions together should only give rise to induction of apatite nucleation.
AB - Anatase layer was derived on pure titanium substrates by the H 2O2 treatment and calcination, on which UV was irradiated in air (UVa) and in ultra pure water (UVw). The effects of the UV irradiation on in vitro apatite formation in Kokubo's simulated body fluid were interpreted in terms of the modified chemistry of the anatase layer. The UVa treatment reduced apatite formation while the contrary effects were observed for the UVw treatment. From Ols X-ray photoelectron spectroscopic (XPS) analysis, those results were correlated to the change in the relative amount of Ti-OH (basic TiOH) and Ti-O(H)-Ti (acidic Ti-OH). Combining the XPS analysis and the apatite growth characteristics, i.e., the number and size of the semi-spherical particles and their surface-coverage, derived a plausible model: proper assembly of those sites (Ti-OH and Ti-O(H)-Ti) that collect both calcium and phosphate ions together should only give rise to induction of apatite nucleation.
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UR - http://www.scopus.com/inward/citedby.url?scp=84875754476&partnerID=8YFLogxK
M3 - Conference contribution
SN - 9781118205969
VL - 33
SP - 79
EP - 84
BT - Ceramic Engineering and Science Proceedings
ER -