Improving the Photo Electro Catalytic Degradation of Methylene Blue by Modified TiO2/ITO Photo Anodes
نویسندگان
چکیده
TiO2 photoanodes have gained significant attention for the removal of organic pollutants through photoelectrocatalytic processes, with aim developing a cost-effective and efficient method improving degradation in surface water. This study investigated effects adding titanium nanooxide (Degussa P25) containing 70% anatase 30% rutile phases on properties nanostructured prepared glass substrates (indium tin oxide (ITO)) using sol–gel/dip coating techniques The results obtained from ultraviolet–visible transmittance spectroscopy, electrochemical (EC) impedance photocurrent, atomic force microscopy analyses revealed that addition Degussa P25 improved electrical conductivity TiO2/ITO anode reduced optical bandgap 3.50 to 3.35 eV, while size particles decreased about 75 nm. EC spectra measurement confirms anode. photoelectrocatalysis (PEC) performance was via methylene blue (MB) under UVA light irradiation. AB photoanode (with exhibited excellent PEC performance, 95.9% color efficiency 63% total carbon (TOC) efficiency, compared 92% 56% TOC A (without P25). kinetic constants (k) were 134 × 10−4, 110 10−4 (min−1) anodes, respectively, MB followed first-order kinetics all anodes. anodes as electrodes PEC, photocatalysis (PC), technologies. Subsequently, utilized compare PC, technologies MB. showed higher PC technologies, (%) efficiencies (PEC), 33% 21% 28% 19% Additionally, photooxidation process had 2.1% effect initial concentration.
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ژورنال
عنوان ژورنال: Journal of Nanomaterials
سال: 2023
ISSN: ['1687-4110', '1687-4129']
DOI: https://doi.org/10.1155/2023/1722978