科研之友
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摘要
Ag/Zn-TiO2 nanoparticles were synthesized via two different methods: sol-gel method in the presence of ethanol under refluxing temperature and sol-gel low-temperature route in the presence of acetic acid under 0 degrees C. The prepared samples were characterized by X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray spectroscopy, N-2 adsorption-desorption isotherm, and Brunauer-Emmett-Teller analysis methods. The effects of preparation method on the crystalline structure, crystal size, and surface area of prepared Ag/Zn-TiO2 nanoparticles were studied. Photocatalytic activity of synthesized nanoparticles was tested by photocatalytic removal of methyl orange (MO) under UV light radiation. The effects of preparation method, initial dye concentration, and recyclability of photocatalysts were studied. Ag/Zn-TiO2 nanoparticles prepared via sol-gel method showed high photocatalytic activity during degradation of MO under UV light radiation due to increase in the specific surface area, total pore volume, and decrease in the crystallite size.
- 出版日期2016-5-20
