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High Performance Photo-Catalyst Based on Nanosized ZnO–TiO2 Nanoplatelets for Removal of RhB Under Visible Light Irradiation

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Nano-sized Zinc oxide–Titanium dioxide (ZnO–TiO2) nanocomposites containing well dispersed ZnO nanoparticles with an average crystal size of 57 nm has been successfully prepared via a hydrothermal method. FTIR characterization reveals that ZnO–TiO2 underwent oxygenation during the preparation of ZnO nanoparticle. The introduction of ZnO–TiO2 in the ZnO–TiO2 hybrid significantly improved the photocatalytic efficiency of ZnO in the degradation of Rhodamine B under visible light irradiation. The apparent reaction constant of ZnO–TiO2 is more times higher than that of pure ZnO, and the photocatalytic efficiency of ZnO–TiO2 remains high even after consecutive reactions. Results from the X-ray photoelectron spectroscopy, Brunauer-Emmett Teller surface area measurements, and electrochemical impedance spectroscopy analysis suggest that the enhancement in the photocatalytic activity of the ZnO–TiO2 hybrid comes from surface area provided by the nano-sized ZnO particles, significant dye adsorption from TiO2 template, and excellent electron reception and conduction of TiO2.
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Keywords: ADSORPTION; HYDROTHERMAL; PHOTOCATALYSIS; TITANIUM DIOXIDE; ZNO

Document Type: Research Article

Publication date: March 1, 2018

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  • Journal of Advanced Microscopy Research (JAMR) provides a forum for rapid dissemination of important developments in high-resolution microscopy techniques to image, characterize and analyze man-made and natural samples; to study physicochemical phenomena such as abrasion, adhesion, corrosion and friction; to perform micro and nanofabrication, lithography, patterning, micro and nanomanipulation; theory and modeling, as well as their applications in all areas of science, engineering, and medicine.
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