Abstract
AbstractThis study aimed to enhance the visible light photosensitivity of TiO2 nanoparticles for self‐cleaning applications by doping with Fe3+. Nanocrystalline undoped and Fe‐doped TiO2 (Ti1 − xFexO2, x = .01–.04) were synthesized via sol–gel method. The results demonstrated that Fe‐doped TiO2 nanoparticles exhibited visible light sensitivity and self‐cleaning properties. An increased Fe concentration resulted in a red shift in the absorption band edge. Fe0.03‐doped TiO2 with an average particle size of ∼21 nm, a crystallite size of ∼12 nm, and a band gap of ∼2.86 eV showed the highest photocatalytic activity (60% methylene blue degradation) and super‐hydrophilicity (water droplet contact angle 9°) under visible light radiation. These findings highlight the potential of Fe‐doped TiO2 nanoparticles as a promising material for self‐cleaning applications.
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