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Citation: Gu Feng-Cai, Zhao Zhu-Xuan, Li Ying-Hui, Men Juan, Yan Ju-Ming, Liu Rui-Xian, Zhang Li-Hua. Preparation and Characterization of SurfaceModified SnO₂ Nanocrystals[J]. Acta Physico-Chimica Sinica, ;2003, 19(07): 621-625. doi: 10.3866/PKU.WHXB20030711 shu

Preparation and Characterization of SurfaceModified SnO₂ Nanocrystals

1.
School of Science, 1School of Electronic Information Engineering，Tianjin University, Tianjin　300072

Received Date: 23 December 2002
Available Online: 15 July 2003

The surface-modified SnO2 nanocrystals were prepared from SnO2 nanoparticles and silane coupling reagent KH-570 (γ-methacryloxy propyl trimethoxy silane). The chemical structure and surface characteristics of the sample were studied by FT-IR, XPS, TEM and TG-DTA techniques. The results indicate that the chemical binding and the physical adsorption between KH-570 and SnO2 have occured during the modification reaction. And the following items have also been obtained in this paper: (a)the characteristic absorption bands of some organic functional groups of KH-570 on the surface of SnO2 such as C=O and －C－O－ were observed by FT-IR; (b) the silicon 2s and 2p spectra of silicon in silane coupling reagent on the surface of the post-modified SnO2 were detected with XPS; (c)the dispersivity and hydrophobicity in water were enhanced. Finally, the influence factors of the quantity of KH-570 on the surface of SnO2 were discussed on the basis of the investigatied results with XPS and TG.
- SnO2 nanocrystal;Silane coupling reagent KH-570;X-ray photoelectron spectroscopy （XPS）;Surface modification;Binding energy
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沈阳化工大学材料科学与工程学院沈阳 110142

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通讯作者: 陈斌, bchen63@163.com

Preparation and Characterization of SurfaceModified SnO₂ Nanocrystals