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- W3162609146 abstract "Titanium dioxide is one of the best semiconducting photocatalysts available for photocatalytic cleaning applications. Especially nano-sized TiO 2 particles deposited on porous substrates can be utilized as a filter for solid and liquid media. On the other hand, red mud and thermal plant fly ash are hazardous wastes that are produced in large quantities. Recycling/reuse of these waste material in a porous ceramic production would be beneficial both for environmental and economical issues. In the present study, a porous substrate was produced from red mud and fly ash with varying ratios and additives of H 3 BO 3 , CaCO 3 , and MgCO 3 for lowering the melting temperature and porosity formation. Sintered ceramics were then coated with nano-sized TiO 2 particles by the sol-gel method. Ultrasonic dispersion of nano-sized TiO 2 nanoparticles was also utilized as an alternative method for impregnation of nanoparticles into the porous structure of the ceramic substrate. Finally, photocatalytic activities and degradation of methylene blue (MB) under UV radiation of substrates were investigated. According to the SEM investigations, the sol-gel method was observed to be a better way of nanoparticle deposition because deposited particles are homogenous throughout the ceramic body. Also, this method provides lower particle sizes than the ones that were deposited by the ultrasonic dispersion method. This results in higher surface area and better photocatalytic activities." @default.
- W3162609146 created "2021-05-24" @default.
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- W3162609146 date "2021-09-01" @default.
- W3162609146 modified "2023-09-24" @default.
- W3162609146 title "Investigation of photocatalytic properties of TiO2 nanoparticle coating on fly ash and red mud based porous ceramic substrate" @default.
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- W3162609146 doi "https://doi.org/10.1016/j.ceramint.2021.05.138" @default.
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