BONDLENGTH ALTERNATION OF NANOPARTICLES Fe2O3 COATED WITH ORGANIC SURFACTANTS PROBED BY EXAFS

• 来源期刊: 同步辐射装置用户科技论文集
• 学科: 化学
• 关键词: 氧化铁 纳米粒子 涂层 有机活化剂 EXAFS
• 年，卷（期）: 1999,（1）
• 页码范围: 20-25
• 页数: 6页
• 分类号: O614.811

摘要

The nanoparticles γ-Fe2O3 coated with surfactants.DBS,ST and CTAB.repsectively.were synthesized by microemulsion method.The coated ferric oxides.which show enhanced nonlinear optical properties compared with their bulk counterpart.were probed by EXAFS in solution forms.The x=-ray absorption spectra for Fe K edge were measured at room temperature by help of synchrotron radiation light source.Extended x-ray absorption fine structure analysis shows that the coating layers of organic molecules interact with surface atoms of nanopartices,the Fe-O bond length was extended.