Abstract
As UV irradiation on titania causes several effects, such as decomposing organic substances and attaining super-hydrophilic surfaces. the present study explored the UV irradiation effects on apatite deposition on titania gel films (anatase) that were developed on a few substrates: pure titanium (Ti), stainless-steel (SUS316L). alumina (Al2O3) and glass slide (GS). Those substrates were dip-coated with a precursor sol (Ti(OC 2H5)4 : C2H5OH : H 2O : HNO3 = 1 : 50 : 2 : 0.2) and heated at 500°C for 10 min before irradiated with UV light (365 nm. 170 mW/cm2) in air for 1 h. They were subsequently soaked in simulated body fluid (SBF. Kokubo solution) and their in vitro apatite formation was evaluated by X-ray diffractometly and scanning electron micrograph. It was found that the UV irradiation enhanced apatite formation on the titania gel film on Ti and SClS by shortening the induction time. However. least effects were found for the titania gel films on Al2O3) and GS as they did not deposit apatite within 7 days, even with the UV irradiation. These results indicated that IJV irradiation had limited effects to enhance in vitro apatite formation on the titania films. i.e., it depended on the substrates.
| Original language | English |
|---|---|
| Title of host publication | Advances in Bioceramics and Porous Ceramics - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008 |
| Pages | 199-210 |
| Number of pages | 12 |
| Volume | 29 |
| Edition | 7 |
| Publication status | Published - 2009 |
| Externally published | Yes |
| Event | Advances in Bioceramics and Porous Ceramics - 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008 - Daytona Beach, FL, United States Duration: Jan 27 2008 → Feb 1 2008 |
Other
| Other | Advances in Bioceramics and Porous Ceramics - 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008 |
|---|---|
| Country | United States |
| City | Daytona Beach, FL |
| Period | 1/27/08 → 2/1/08 |
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All Science Journal Classification (ASJC) codes
- Ceramics and Composites
- Materials Chemistry
Cite this
Ultraviolet irradiation had limited effects on enhancing in vitro apatite formation on sol-gel derived titania films. / Osaka, Akiyoshi; Shozui, Tetsuya; Tsuru, Kanji; Haakawa, Satoshi.
Advances in Bioceramics and Porous Ceramics - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008. Vol. 29 7. ed. 2009. p. 199-210.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Ultraviolet irradiation had limited effects on enhancing in vitro apatite formation on sol-gel derived titania films
AU - Osaka, Akiyoshi
AU - Shozui, Tetsuya
AU - Tsuru, Kanji
AU - Haakawa, Satoshi
PY - 2009
Y1 - 2009
N2 - As UV irradiation on titania causes several effects, such as decomposing organic substances and attaining super-hydrophilic surfaces. the present study explored the UV irradiation effects on apatite deposition on titania gel films (anatase) that were developed on a few substrates: pure titanium (Ti), stainless-steel (SUS316L). alumina (Al2O3) and glass slide (GS). Those substrates were dip-coated with a precursor sol (Ti(OC 2H5)4 : C2H5OH : H 2O : HNO3 = 1 : 50 : 2 : 0.2) and heated at 500°C for 10 min before irradiated with UV light (365 nm. 170 mW/cm2) in air for 1 h. They were subsequently soaked in simulated body fluid (SBF. Kokubo solution) and their in vitro apatite formation was evaluated by X-ray diffractometly and scanning electron micrograph. It was found that the UV irradiation enhanced apatite formation on the titania gel film on Ti and SClS by shortening the induction time. However. least effects were found for the titania gel films on Al2O3) and GS as they did not deposit apatite within 7 days, even with the UV irradiation. These results indicated that IJV irradiation had limited effects to enhance in vitro apatite formation on the titania films. i.e., it depended on the substrates.
AB - As UV irradiation on titania causes several effects, such as decomposing organic substances and attaining super-hydrophilic surfaces. the present study explored the UV irradiation effects on apatite deposition on titania gel films (anatase) that were developed on a few substrates: pure titanium (Ti), stainless-steel (SUS316L). alumina (Al2O3) and glass slide (GS). Those substrates were dip-coated with a precursor sol (Ti(OC 2H5)4 : C2H5OH : H 2O : HNO3 = 1 : 50 : 2 : 0.2) and heated at 500°C for 10 min before irradiated with UV light (365 nm. 170 mW/cm2) in air for 1 h. They were subsequently soaked in simulated body fluid (SBF. Kokubo solution) and their in vitro apatite formation was evaluated by X-ray diffractometly and scanning electron micrograph. It was found that the UV irradiation enhanced apatite formation on the titania gel film on Ti and SClS by shortening the induction time. However. least effects were found for the titania gel films on Al2O3) and GS as they did not deposit apatite within 7 days, even with the UV irradiation. These results indicated that IJV irradiation had limited effects to enhance in vitro apatite formation on the titania films. i.e., it depended on the substrates.
UR - http://www.scopus.com/inward/record.url?scp=84897692912&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897692912&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84897692912
SN - 9780470344941
VL - 29
SP - 199
EP - 210
BT - Advances in Bioceramics and Porous Ceramics - A Collection of Papers Presented at the 32nd International Conference on Advanced Ceramics and Composites, ICACC 2008
ER -