纳米晶TiO2的合成及表面态研究

Synthesis and surface state studies of nanocrystalline TiO2

    摘要
  • 摘要: 采用硬脂酸凝胶法制备了TiO2纳米材料,用差热-热重分析、红外光谱分析、X光衍射分析、透射电镜、表面光电压谱和X光光电子能谱等手段对TiO2制备过程及产物的晶型、形貌、表面光电特性等进行了分析。实验结果表明,TiO2纳米材料的表面结构有利于光催化活性的提高。

     

    Abstract: Nanocrystalline TiO2 was prepared by using a stearic acid gel method,the synthesis was investigated by differential thermal analysis,thermogravimetric analysis,infrared spectra and X-ray powder diffraction.The surface state was analyzed by means of X-ray photoelectron spectroscopy and surface photovoltage spectroscopy.The results of experiments show that the surface state of nanocrystalline TiO2 is beneficial to improve the photoca talytic activity.

     

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