Abstract
Nano-scale rod arrays of titania were prepared on commercially available pure titanium (cpTi) substrates by a chemical treatment at 80°C for 3 d and a subsequent aging treatment in ultra-pure water at 80°C for 1 d. Treating solutions (TSs) for chemical treatment contained titanyl sulfate (TiOSO4), hydrogen peroxide (H2O2), and nitric acid (HNO3). Fourier transform infrared spectroscopy analysis indicated that an amorphous titania gel layer containing TiOO bonds formed on the chemically treated cpTi substrate in 0.10 mol·m13 TS, which was then transformed into anatase rods during aging treatment. Thin-film X-ray diffraction and scanning-electron microscopy analyses showed that the 0.10 mol·m13 TiOSO4 TS provided randomly packed aggregates of oriented anatase and rutile rods, while 0.14 and 0.18 mol·m13 TiOSO4 TSs yielded highly ordered rutile rods of ca. 20 nm in diameter. The rutile rods grew perpendicular to the cpTi substrate and the rod array fully covered the surface of the cpTi substrate. It is proposed that the nucleation of rutile occurs on the amorphous titania gel layer, and the rate of nucleation and growth of rutile increase with increasing concentration of TS, accompanied by the consumption of amorphous titania gel. Rutile layers with high rod density and 3.0 ¯m thickness were successfully prepared on the surface of cpTi substrates.
| Original language | English |
|---|---|
| Pages (from-to) | 545-550 |
| Number of pages | 6 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 127 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Jan 1 2019 |
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Keywords
- Aging treatment
- Anatase
- CpTi
- Key-words: Rutile
- Rod
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Effect of titanyl sulfate concentration on growth of nanometer-scale rutile rod arrays on the surface of titanium substrate. / Liu, Xing zhu; Yoshioka, Tomohiko; Hayakawa, Satoshi.
In: Journal of the Ceramic Society of Japan, Vol. 127, No. 8, 01.01.2019, p. 545-550.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of titanyl sulfate concentration on growth of nanometer-scale rutile rod arrays on the surface of titanium substrate
AU - Liu, Xing zhu
AU - Yoshioka, Tomohiko
AU - Hayakawa, Satoshi
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Nano-scale rod arrays of titania were prepared on commercially available pure titanium (cpTi) substrates by a chemical treatment at 80°C for 3 d and a subsequent aging treatment in ultra-pure water at 80°C for 1 d. Treating solutions (TSs) for chemical treatment contained titanyl sulfate (TiOSO4), hydrogen peroxide (H2O2), and nitric acid (HNO3). Fourier transform infrared spectroscopy analysis indicated that an amorphous titania gel layer containing TiOO bonds formed on the chemically treated cpTi substrate in 0.10 mol·m13 TS, which was then transformed into anatase rods during aging treatment. Thin-film X-ray diffraction and scanning-electron microscopy analyses showed that the 0.10 mol·m13 TiOSO4 TS provided randomly packed aggregates of oriented anatase and rutile rods, while 0.14 and 0.18 mol·m13 TiOSO4 TSs yielded highly ordered rutile rods of ca. 20 nm in diameter. The rutile rods grew perpendicular to the cpTi substrate and the rod array fully covered the surface of the cpTi substrate. It is proposed that the nucleation of rutile occurs on the amorphous titania gel layer, and the rate of nucleation and growth of rutile increase with increasing concentration of TS, accompanied by the consumption of amorphous titania gel. Rutile layers with high rod density and 3.0 ¯m thickness were successfully prepared on the surface of cpTi substrates.
AB - Nano-scale rod arrays of titania were prepared on commercially available pure titanium (cpTi) substrates by a chemical treatment at 80°C for 3 d and a subsequent aging treatment in ultra-pure water at 80°C for 1 d. Treating solutions (TSs) for chemical treatment contained titanyl sulfate (TiOSO4), hydrogen peroxide (H2O2), and nitric acid (HNO3). Fourier transform infrared spectroscopy analysis indicated that an amorphous titania gel layer containing TiOO bonds formed on the chemically treated cpTi substrate in 0.10 mol·m13 TS, which was then transformed into anatase rods during aging treatment. Thin-film X-ray diffraction and scanning-electron microscopy analyses showed that the 0.10 mol·m13 TiOSO4 TS provided randomly packed aggregates of oriented anatase and rutile rods, while 0.14 and 0.18 mol·m13 TiOSO4 TSs yielded highly ordered rutile rods of ca. 20 nm in diameter. The rutile rods grew perpendicular to the cpTi substrate and the rod array fully covered the surface of the cpTi substrate. It is proposed that the nucleation of rutile occurs on the amorphous titania gel layer, and the rate of nucleation and growth of rutile increase with increasing concentration of TS, accompanied by the consumption of amorphous titania gel. Rutile layers with high rod density and 3.0 ¯m thickness were successfully prepared on the surface of cpTi substrates.
KW - Aging treatment
KW - Anatase
KW - CpTi
KW - Key-words: Rutile
KW - Rod
UR - http://www.scopus.com/inward/record.url?scp=85073660342&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85073660342&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.19109
DO - 10.2109/jcersj2.19109
M3 - Article
AN - SCOPUS:85073660342
VL - 127
SP - 545
EP - 550
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 8
ER -