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- W4386880603 abstract "This chapter of book summarizes on the recent application of titanium dioxide (TiO2) in nano-sized with hybridization of other materials for photoreduction of dye compounds under photon irradiation. The use of native TiO2 as a photocatalyst is highlighted in the first section of the chapter due to its special properties, which include strong optical activity, excellent chemical stability, and nontoxicity. As a result, TiO2 is frequently used to photodegrade a variety of dye contaminants found in wastewater, as it facilitates the breakdown of dye molecules when exposed to photons. However, pure TiO2 is more prone to excitation when exposed to UV light because of its broad bandgap, and the rate of recombination of photogenerated species electron–hole (e−/h+) pairs is considerable. Despite this, the photocatalytic efficiency of pure TiO2 is still relatively low. In order to exhibit a bandgap suitable for excitation by visible light, good charge separation efficiency, charge carrier and transport, and suitable positions of the valence band (VB) and conduction band (CB) for redox reactions, hybridization with other materials, such as nano-metal oxide, ceramic-based materials, and polymeric materials, comes into the picture. Given that the UV region makes up a relatively minor portion of the solar spectrum, visible light active nano-photocatalysts are favoured in this situation. It is important to note that the combination of TiO2 with those materials causes visible light absorption in TiO2 by altering its inner band structure by substituting oxygen in the TiO2 lattice to decrease the optical energy bandgap, which subsequently overcomes the bandgap energy, stability, dispersion, and recombination rate limitations for more effective dye molecule photoreduction. Finally, this book chapter brought new insight into applying photoactive nanotechnology as an alternative method for sustainable and economic dyes treatment. Highlight: (1) Treatment methods of dye removal. (2) Mechanism of TiO2 photocatalysis process. (3) Hybrid TiO2 nanoparticles photocatalysts for dye removal under solar-driven AOPs. (4) The recent development of hybrid materials of TiO2 nanoparticles for dye removal is discussed. (5) Prospects and limitations of photocatalytic dye removal reactions." @default.
- W4386880603 created "2023-09-21" @default.
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- W4386880603 date "2023-01-01" @default.
- W4386880603 modified "2023-09-29" @default.
- W4386880603 title "Photoactive Titanium Dioxide Nanoparticles Hybrid for Dye Removal Under Light Irradiation" @default.
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