Surface modification of nanoparticles with octadecyl trichlorosilane and its effects on photocatalytic activity

Micro & nano letters

article

Jianhua Qian¹  Quanliang Ma¹  Jiasheng Xu¹ 

[1] Liaoning Province Key Laboratory for Synthesis and Application of Functional Compounds, College of Chemistry, Chemical Engineering and Food Safety, Center of Science and Technology Experiment, Bohai University

关键词: catalysis;    Fourier transform spectra;    infrared spectra;    nanoparticles;    photochemistry;    reflectivity;    surface treatment;    thermal analysis;    ultraviolet spectra;    visible spectra;    TiO2;    wavelength 200 nm to 900 nm;    nanomaterial modification;    Rhodamine B absorbance;    UV-vis diffuse reflectance spectra;    light catalytic activity;    UV-light absorbance;    ultraviolet spectrophotometer;    FTIR;    Fourier transform infrared techniques;    TGA;    thermogravimetric analysis;    octadecyl trichlorosilane grafting;    nanoparticle dispersion;    coupling agent;    titanium dioxide nanoparticle surfaces;    photocatalytic activity;    nanoparticle surface modification;   

DOI  :  10.1049/mnl.2012.0930

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The surfaces of titanium dioxide (TiO 2 ) nanoparticles were modified with octadecyl trichlorosilane (OTS) as a coupling agent in different conditions. In order to improve the nanoparticles' dispersion and transform the interactions between nanoparticles in different conditions, the grafting of OTS on the TiO 2 nanoparticles' surface was characterised by thermogravimetric analysis and Fourier transform infrared techniques. An ultraviolet (UV) spectrophotometer was employed to evaluate the absorbance of UV-light in the wavelength range of 200–900 nm. To assess the light catalytic activity, UV/vis diffuse reflectance spectra were applied to detect the absorbance of Rhodamine B, which was absorbed in the dark and degraded under a lamp. An effective method has been provided to improve photocatalytic activity, which may also be applied to the modification of other nanomaterials.

【 授权许可】

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