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1 个结果
  • 简介:Hematitenanoparticleswhichwerecoated,respectively,withsodiumdodecylebenzenesulphonate(DBS)andcetyltrimethylammoniumbromide(CTAB)weresynthesizedbyusingmicroemulsionmethodinthesystemofwater/toluene.Theparticlesizeandshapewerecharacterizedwithtransmissuonelectronmicroscopy(TEM).TheTEMresultsshowthatthenanoparticlestaketheshapeofshperewithdimeterof5.0nmand6.0nmformodifiedDBSandCTABrespectively.ThelocalatomicstructuresofthesenanoparticleswereprobedbyusingXAFStechnique.Fe-Kabsorptionspectrawerecollectedatbeamline4W1BofBSRF.ThelocalatomicstructureinDBScoatedhematitewasfoundtobesimilarwiththatinbulkhematiteexcepttheanharmonicityincreasing,butabout0.04AexpansionofFe-ObondlengthinCTAB-coatedhematite,Theinterface/surfaceatomicconfigurationwerecomparedanddiscussed.

  • 标签: 赤铁矿 定域原子结构 纳米粒子