Formation of oxygen radicals by coordinatively unsaturated oxygen anions on hydroxyapatite

被引：7
|
作者：
Matsumura, Y
Kanai, H
Moffat, JB
机构：
[1] AIST, Osaka Natl Res Inst, Ikeda, Osaka 563, Japan
[2] Kyoto Prefectural Univ, Fac Life Sci, Sakyo Ku, Kyoto 606, Japan
[3] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1998年 / 135卷 / 03期
基金：
加拿大自然科学与工程研究理事会;
关键词：
hydroxyapatite; oxygen radical; ESR; V-center; F-center;
D O I：
10.1016/S1381-1169(98)00003-X
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：
Coordinatively unsaturated oxygen (O-CUS(2-)) is generated on nonstoichiometric hydroxyapatite formally expressed as Ca-9.66(PO4)(5.66)(HPO4)(0.34)(OH)(1.66) by evacuation at 900 degrees C. Interaction between O-2 and O-CUS(2-) generated by the dehydration of the hydroxyl groups in the apatite results in the simultaneous appearance of ESR centers assigned as O-CUS(-) (hole center) and O-2(-) radical oxygen species, evidently showing that O-CUS(2-) can donate electron to O-2 and activate it. (C) 1998 Elsevier Science B.V. All rights reserved.
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页码：317 / 320
页数：4
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