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| Preparation and photocatalytic properties of Ag nanoparticles doped TiO2 |
| CEN Shi-hong1,2，Lü Xiao-gai1，XU Bei-bei1,2，XU Ying1,2 |
| （1. School?of?Pharmaceutical?Sciences，?Zhengzhou?University?of?Industrial?Technology，?Zhengzhou 450046，?China： 2. College of Chemistry and Chemical Engineering， He’nan University， Kaifeng 475004， China） |
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Abstract Using tetraethyl titanate as titanium source and 3-aminopropyltrimethoxysilane as reactant， aminated nano-TiO2 was prepared by uniform hydrolysis-thermal decomposition method， then Ag/TiO2 was prepared by doping Ag nanoparticles， and its photocatalytic performance was studied. The results show that Ag-doped nano-TiO2 has better photocatalytic reaction with printing and dyeing waste water than non-doped TiO2， and the photocatalytic degradation rate of calcined Ag/TiO2 is higher. The Ag/TiO2 doped with 3% Ag（mass percent） has the best photocatalytic effect. The after-doping Ag means that Ag is actually coated on the surface of nano-TiO2， which saves more raw materials than Ag/ TiO2 prepared by mixing.
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Received: 04 July 2018
Published: 24 December 2018
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2018, Vol. 28 
