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灰白黑纳米微粒铁酸钴的共振散射光谱研究

RESONANCE SCATTERING SPECTROSCOPIC STUDY ON THE GRAY,WHITE,BLACK CoFe₂O₄ NANOPARTICLE

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【Author】 JIANG Zhiliang1,LUO Yanghe1,LIU Fengzhi1,LIU Shaopu2(1Institute of Material Science and Engineering,Guangxi Normal University,Guilin 541004,China;2Institute of Environmental Chemistry,SouthwestChina Normal University,Chongqing 400715,China)

【机构】广西师范大学材料科学与工程研究所；西南师范大学环境化学研究所广西桂林541004；广西桂林541004；重庆400715；

【摘要】采用共沉淀-酸蚀法制备液相CoFe2O4纳米粒子.TEM和STM表明CoFe2O4纳米粒子呈球形,粒径为12nm.当CoFe2O4纳米粒子浓度低于8.4×10-6mol/L时在400,470,510,800和940nm产生5个共振散射峰.以它作模型,结合已有的实验结果提出了界面共振吸收概念和灰白黑纳米微粒共振散射原理,解释了CoFe2O4纳米粒子等体系的共振散射光谱.探讨了共振散射光谱分析体系的选择及提高方法选择性的途径.更多还原

【Abstract】 The CoFe2O4 nanoparticle has been prepared using coprecipitationacid eroded procedure.Transmission electron microscopy(TEM) and scanning tunneling microscopy show that CoFe2O4 exhibits spherical nanoparticle in diameter of 12nm.When CoFe2O4 concentration is less than 8.4×10-6mol/L,there are five resonance scattering peaks at 400,470,510,800 and 940nm.A new concept of interface resonance absorption,black nanoparticle scattering,white nanoparticle scattering and gray nanoparticle scattering has been proposed according to our experimental results,which has been applied to explain greatly the spectra of aqueous CoFe2O4 nanoparticle and so on.The selection and selectivity for resonance scattering analysis system were also discussed.更多还原