文献类型：期刊文献

英文题名：Synthesis of mesoporous hydroxyapatite nanoparticles using a template-free sonochemistry-assisted microwave method

作者：Liang, Tong[1,2];Qian, Jiangchao[1,2];Yuan, Yuan[1,2];Liu, Changsheng[1,2]

机构：[1]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Engn Res Ctr Biomed Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2013

卷号：48

期号：15

起止页码：5334

外文期刊名：JOURNAL OF MATERIALS SCIENCE

收录：;EI(收录号：20132216368429);WOS:【SCI-EXPANDED(收录号:WOS:000319003300029)】；

基金：The authors appreciate financial support from National Basic Research Program of China (973 Program, No. 2012CB933600), National Science Fund of China (Grant No. 31271010), and Shanghai Nanotechnology Special Foundation (No. 11nm0506300).

语种：英文

外文关键词：Hydroxyapatite - Microwave irradiation - Fourier transform infrared spectroscopy - High resolution transmission electron microscopy - Sintering - Mesoporous materials - Nanoparticles - Pore size - Synthesis (chemical) - Desorption - Sonochemistry - Specific surface area

摘要：A facile template-free sonochemistry-assisted microwave method was successfully developed for the synthesis of mesoporous hydroxyapatite nanoparticles (MHN) in a short time. The prepared MHN were characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and N-2 adsorption-desorption isotherms. TEM images showed a clear rod-like morphology with length of 50-100 nm and width of about 20 nm. XRD and FTIR indicated a typical hydroxyapatite phase with high crystallinity. N-2 adsorption-desorption isotherms revealed an irregular mesoporous structure. Judging from the values calculated from N-2 isotherms, the specific surface area and pore volume obviously decreased after the sintering process. In a typical example, the specific surface area, pore volume, and pore size of MHN before and after calcination were 79.74 m(2)/g, 0.46 cm(3)/g, 2.7 nm and 45.41 m(2)/g, 0.22 cm(3)/g, 2.8 nm, respectively. In addition, MHN could be synthesized in a period of time as short as 10 min. Further investigation indicated that microwave radiation played a dominant role in the emergence of mesoporous structure, while ultrasound irradiation acted as a supporting role. Based on the above results, a possible mechanism of formation of mesoporous hydroxyapatite has been proposed.