在温和水热条件下直接制备沉积在羟基磷灰石晶体上的二氧化钛纳米颗粒。

Direct fabrication of TiO2 nanoparticles deposited on hydroxyapatite crystals under mild hydrothermal conditions.

作者信息

Sujaridworakun Pornapa, Pongkao Dujreutai, Ahniyaz Anwar, Yamakawa Yasuaki, Watanabe Tomoaki, Yoshimura Masahiro

机构信息

Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan.

出版信息

J Nanosci Nanotechnol. 2005 Jun;5(6):875-9. doi: 10.1166/jnn.2005.136.

DOI:10.1166/jnn.2005.136

PMID:16060146

Abstract

TiO2 nanoparticles-deposited on hydroxyapatite (HAp) have been successfully synthesized by direct (single step) hydrothermal treatments of a CaCO3 suspension in a H3PO4 solution with 10 vol% TAS-FINE (titanium amine complex) at 150 degrees C for 6 h or 120 degrees C for 12-24 h under nearly neutral pH conditions. The obtained products were characterized by XRD, SEM-EDX, visible, Raman, and TEM. The XRD and Raman results showed the formation of HAp and TiO2 anatase phases under these hydrothermal conditions. SEM and TEM observations revealed that anatase TiO2 nanoparticles with the size of about 10 nm were deposited on the surfaces of the HAp crystals.

摘要

通过在接近中性pH条件下，将碳酸钙悬浮液于含10体积% TAS - FINE（钛胺配合物）的磷酸溶液中，在150℃下直接（一步）水热处理6小时，或在120℃下处理12 - 24小时，成功合成了负载在羟基磷灰石（HAp）上的二氧化钛纳米颗粒。通过X射线衍射（XRD）、扫描电子显微镜 - 能谱仪（SEM - EDX）、可见光、拉曼光谱和透射电子显微镜（TEM）对所得产物进行了表征。XRD和拉曼光谱结果表明，在这些水热条件下形成了HAp和TiO₂锐钛矿相。扫描电子显微镜（SEM）和透射电子显微镜（TEM）观察显示，尺寸约为10 nm的锐钛矿型TiO₂纳米颗粒沉积在HAp晶体表面。