Abstract
Photocatalytic properties of TiO<sub>2</sub> nanostructures of different morphology modified with various modifiers
Highlights
Synthesis of TiO2 nanotube coatings, nanoporous coatings, and nanofibres by using titanium anodizing, microplasma electrolytic oxidation, and microwave-assisted hydrothermal synthesis in different regimes was studied
Prospective methods to achieve the aims of the research are anodization, microplasma electrolytic oxidation, and microwave-assisted synthesis combined with the modification of the chemical composition of the photocatalysts
In case titanium was anodized for a longer time, a dense titanium dioxide coating that overlapped TiO2 nanotubes was noticed (Fig. 1)
Summary
Synthesis of TiO2 nanotube coatings, nanoporous coatings, and nanofibres by using titanium anodizing, microplasma electrolytic oxidation, and microwave-assisted hydrothermal synthesis in different regimes was studied. The obtained TiO2 nanofibres and nanotube and nanoporous coatings were modified with Au, Ag, Pt, Pd, S, WO3, and Eu2O3, nanoparticles to improve photocatalytic activity under ultraviolet and visible light irradiation. Since the 1970s, TiO2 has become one of the most widely studied photocatalysts in the world It exhibits very high photocatalytic activity under ultraviolet (UV) irradiation, but still this photocatalytic activity is inadequate in visible (VIS) light [2,3]. Prospective methods to achieve the aims of the research are anodization, microplasma electrolytic oxidation, and microwave-assisted synthesis combined with the modification of the chemical composition of the photocatalysts. The modification of TiO2 with Au, Pt, Pd, Ag, WO3, S, and Eu2O3 nanoparticles [18,19,20,21,22,23,24] is effective in increasing photocatalytic activity; the activity depends on the modifier content, TiO2 morphology, and particle size [25]
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