In vitro apatite formation and visible-light photocatalytic activity of Ti metal subjected to chemical and thermal treatments

Masakazu Kawashita, Yuto Yokohama, Xinyu Cui, Toshiki Miyazaki, Hiroyasu Kanetaka

研究成果: Article査読

5 被引用数 (Scopus)

抄録

In this study, we investigated the surface structure, apatite formation in simulated body fluid (SBF), and visible-light photocatalytic activity of Ti metal subjected to chemical and thermal treatments. Ti metal samples treated with NaOH, a nitrogen-containing solution (0.1 M HNO3, 0.1-1.0 M (H2N)2CO, or 0.1-1.0 M NH4Cl), and heat showed apatite formation on their surfaces in SBF, whereas those treated with NaOH, 0.5 or 1.0 M HNO3, and heat did not. In the former case, apatite formation may be attributable to the fine network structure of anatase-type TiO2 doped with a small amount of nitrogen on the surface of the Ti metal. The Ti metal treated with the latter treatment showed higher methylene blue decomposition than the untreated sample and the one treated with the former treatment. This preliminary result suggests that Ti metal treated with NaOH, 0.1 M HNO3, and heat can potentially show visible-light-induced antibacterial property as well as bone-bonding ability.

本文言語English
ページ(範囲)12629-12636
ページ数8
ジャーナルCeramics International
40
8 PART B
DOI
出版ステータスPublished - 2014 9

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • プロセス化学およびプロセス工学
  • 表面、皮膜および薄膜
  • 材料化学

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