Iranian Journal of Ceramic Science & Engineering
Volume 7, Issue 1 (6-2018)
2018, 7(1): 25-35 |
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Synthesis, characterization and photocatalytic activity of doped Ag/TiO2-ZnO nanocomposite for MB dye degradation under visible light and UV-A light. Iranian Journal of Ceramic Science & Engineering 2018; 7 (1) :25-35
URL: http://ijcse.ir/article-1-573-en.html
URL: http://ijcse.ir/article-1-573-en.html
Abstract: (4149 Views)
In this study, mesoporous TiO2-ZnO-5%Ag nanocomposite was prepared by a one-step hydrothermal synthesis method. Titanium sulfate, Zinc nitrate hexahydrate and silver nitrate were used as Titanium, Zinc and Silver precursors, respectively. X-ray diffraction analysis was used to identify the present phases in the structure. Also, Ultraviolet–visible spectroscopy (UV-Vis), Energy-dispersive X-ray spectroscopy (EDS), Field Emission Scanning Electron Microscope (FESEM) and N2 adsorption–desorption have been used for the characterization of the nanoparticles. The as-prepared photocatalyst was applied under UV and visible light irradiations as a model of organic pollutant for Methylene Blue (MB) degradation The results of XRD, EDS and Map analysis confirmed the presence of Titanium dioxide, Zinc oxide and Silver phases in the nanocomposite after calcination at the temperature of 400°C. The photocatalytic activity of TiO2-ZnO-5%Ag nanocomposite was compared with the P25 (Degussa) commercial sample and TiO2-ZnO nanocomposite. The highest percent of degradation of pollutant under visible light was observed by mesoporous TiO2-ZnO-5%Ag sample.
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