Stabilization of Radicals by Doping from Aqueous Solutions into Crystals of Hydroxyapatite
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概要
- 論文の詳細を見る
Unstable superoxide, ^・O^-_2, and semiquinone can be stabilized when hydroxyapatite Ca_<10>(PO_4)_6(OH)_2 is crystallized from aqueous solutions containing these radicals. The inorganic microcrystals surround the radicals and stabilize them for nearly a year at room temperature. Radicals adsorbed on the surface of apatite showed spectra different from those obtained by dopung. Semiquinone radicals in apatite were almost stable up to about 600℃. Effects of additional Fe^<3+> and F^- impurities on the electron spin resonance (ESR) spectrum of superoxide-doped apatite were studied to determine the site of the radicals in the lattice. Superoxide may be substittuted at the OH^- site.
- 社団法人応用物理学会の論文
- 1992-05-15
著者
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Ikeya Motoji
Department Of Earth And Space Science Faculty Of Science Osaka University
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Meguro Kazuhide
Department Of Earth And Space Science Faculty Of Science Osaka University
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