Comparison of local structure between Mg/Mn-doped natural and synthetic hydroxyapatites by X-ray absorption spectroscopy

被引：9

作者：

Bootchanont, Atipong ^{[1
]}

Wechprasit, Tirapat ^{[1
]}

Areesamarn, Noorhaida ^{[1
]}

Pholprom, Rattanawadee ^{[1
]}

Hwangphon, Thiritsara ^{[1
]}

Temprom, Likit ^{[2
]}

Amonpattaratkit, Penphitcha ^{[3
]}

Klysubun, Wantana ^{[3
]}

Yimnirun, Rattikorn ^{[4
]}

机构：

[1] Rajamangala Univ Technol Thanyaburi, Fac Sci & Technol, Div Phys, Pathum Thani 12110, Thailand

[2] Khon Kaen Univ, Fac Sci, Mat Sci & Nanotechnol Program, Khon Kaen 40002, Thailand

[3] Synchrotron Light Res Inst, Nakhon Ratchasima 30000, Thailand

[4] Vidyasirimedhi Inst Sci & Technol VISTEC, Sch Energy Sci & Engn, Rayong 21210, Thailand

来源：

RADIATION PHYSICS AND CHEMISTRY | 2020年 / 177卷

关键词：

Natural hydroxyapatite; Local structure; XANES;

D O I：

10.1016/j.radphyschem.2020.109075

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The natural hydroxyapatites were extracted from fish bone. In the extracted process, Mg and Mn were added in hydroxyapatite. In addition, Mg/Mn-doped hydroxyapatites were synthesized by sol-gel combustion method. This study compared local sites of Mg and Mn in natural and synthetic hydroxyapatites. The crystal and local structures were investigated by x-ray diffraction (XRD) and x-ray absorption spectroscopy (XAS) technique, respectively. For Mg-added, the results indicate that Mg2+ for the both natural and synthetic hydroxyapatites, but they form MgO structure and rather substitute on Ca site in CaO structure, respectively. For Mn-added, the results indicate Mn4+ for synthetic HAp and mixture ion of Mn3+ and Mn4+ for natural HAp. The calculated XANES spectra show that Mn is formed to Ca3Mn2O7 structure in Mn-doped synthetic HAp and the mixture phase between CaMn2O4 and Ca3Mn2O7 for natural HAp.

引用

页数：5

共 18 条

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