STRUCTURAL DETERMINATION OF TITANIUM-OXIDE NANOPARTICLES BY X-RAY ABSORPTION SPECTROSCOPY

查看全文 作　　者：Z.Y. Wu;J. Zhang ;K. Ibrahim;M.I. Abbas; G. Li ; Y. Tao; T.D. Hu ; F.Q. Liu;H.J. Qian;Y.N. Xie ;Q.H. Zhang;L. Gao ; Z.Z. Chen

出　　处：《Acta Metallurgica Sinica(English Letters)》索引2002年第15卷第1期,共5页

基　　金：One of us (Z.Y. Wu) was supported by 100-Talent Research Program of The Chinese Academy of Sciences. One of the authors (K. Ibrahim) is grateful to the National Natural Science Foundation of China (NSFC) for financial support (Grant No. 10074063) ; The 摘　　要：As a potential application of titanium-oxide nanoparticles, it is extremely importantto investigate a detailed picture of the surface and interior structural properties ofnanocrystalline materials, such as rutile and anatase with diameters 7.0 and 4.5nm,respectively. X-ray absorption spectroscopy has been used to identify the local Ti envi-ronment and related electronic structure. We combine the experimental results at theTi edge in both bulk and nano-crystals to determine the lattice distortion in terms ofdifferently characteristic preedge features and the variation in the multiple-scatteringregion of X-ray absorption near-edge structure (XANES) spectra. The relationshipbetween the transition peaks and the surface-to volume ratio is also discussed. 关键词：X-ray absorption, NEAR edge structure, NATO particle, transition metal OXIDE

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STRUCTURAL DETERMINATION OF TITANIUM-OXIDE NANOPARTICLES BY X-RAY ABSORPTION SPECTROSCOPY

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