Abstract
Electrophoretic deposition (EPD) of TiO2thin film was carried out at room temperature on low cost steel substrate using microwave synthesized nanoparticles (NPs) of TiO2. Synthesized NPs and EPD thin film were characterized at different stages of synthesis for its crystal structure, morphology, elemental analysis, and surface area. Spherical particle morphology and formation of TiO2were confirmed by scanning electron micrograph (SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD). Synthesized NPs were formed in anatase phase having crystallite size of about 12.3 nm from Scherrer's formula using full width half maxima (FWHM). Surface area was found to be 43.52 m2/g by BET giving particle size of 33 nm. Photocatalytic (PC) behavior of TiO2NPs and EPD TiO2film on steel substrate was investigated under UV light for two commercial dyes and their photocatalysis efficiency was analyzed. NPs have shown better efficiency for methylene blue (MB) dye than EPD film whereas EPD film have shown higher PC activity for methyl red (MR) dye.
Highlights
TiO2 is one of the transition metal oxides, having excellent optical, electrical, PC properties [1, 2]
Chemicals are used as they are received without any further purification. 0.5 M titanium butoxide solution was prepared in 100 mL butanol and stirred for 15 minutes and further 30 mL deionized water was added drop wise in above solution to allow hydrolysis
TiO2 NPs were synthesized by novel microwave assisted method with titanium butoxide as starting material
Summary
TiO2 is one of the transition metal oxides, having excellent optical, electrical, PC properties [1, 2]. It is optically transparent, nontoxic, wide band gap, and sensitive to UVradiations. TiO2, being very reactive with both light and water, exhibits exceptional resistance to corrosion and photocorrosion in aqueous environments. Under normal atmospheric conditions and UV-Vis light, organisms that are virulent and hard to be decomposed can be thoroughly oxidized to molecules, such as H2O and CO2 by using anatase TiO2 under UV irradiation. An enormous research effort has been made to study the PC properties and applications of TiO2 under light illumination. In this study an attempt has been made to develop and implement an efficient and cost effective scheme for the purification and disinfection of water from organic dyes
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