文献类型：期刊文献

英文题名：Sol-gel auto-combustion synthesis of hydroxyapatite nanotubes array in porous alumina template

作者：Yuan, Yuan[1];Liu, Changsheng[1];Zhang, Yuan[1];Shan, Xiaoqian[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Biomed Mat, Minist Educ, Key Lab Ultrafine Mat,Minist Educ & Eng, Shanghai 200237, Peoples R China

年份：2008

卷号：112

期号：1

起止页码：275

外文期刊名：MATERIALS CHEMISTRY AND PHYSICS

收录：;EI(收录号：20084611692322);WOS:【SCI-EXPANDED(收录号:WOS:000259423200051)】；

基金：The authors appreciate financial support from the National Science Fund for Distinguished Young Scholars of China (grant no. 20425621), the Major State Basic Research Program of China (no. 2005CCA01000) and the Basic Research Foundation of the Shanghai Science and Technology Committee (05DJ14005).

语种：英文

外文关键词：hydroxyapatite nanotube arrays; synthesis; sol-gel auto-combustion; AAO template

摘要：In this paper, an array of highly ordered hydroxyapatite (HAP) nanotubes was synthesized by sol-gel auto-combustion method with porous anodic aluminum oxide (AAO) template for the first time. Based on thermogravimetry (DTA/TG), Fourier transform infrared (FTIR) and X-ray diffraction (XRD), the dried gel, derived from the sol solution with Ca(NO3)(2)center dot 4H(2)O and PO(CH3O)(3) as precursors and ethylene glycol as the polymeric matrix, exhibited a typical self-propagating combustion behavior at low temperature, directly resulting in hexagonal crystalline HAP materials. The resultant HAP arrays fabricated from the above sol-gel in the AAO template were uniformly distributed, highly ordered nanotubes with uniform length and diameter according to the observations of scanning electron microscopy (SEM) and transmission electron microscope (TEM). The electron diffraction (ED), XRD and X-ray photoelectron spectroscopy (XPS) survey proved the formation of HAP phase with polycrystalline structure in the AAO template. Based on these results, a potential mechanism of "an auto-combustion from dried gel to nanoparticles and a subsequent in situ reaction from nanoparticles to nanotubes" was proposed. (c) 2008 Elsevier B.V. All rights reserved.