Sol-gel synthesis of metal ions doped TiO2 catalyst with efficient photodegradation of dye pollutant

Water pollution problem is a significant trouble in our life. The photodegradation of organic pollutants in water, which is an environmentally friendly and economically feasible approach, has attracted considerable attention. Titanium oxide (TiO 2 ) is one of the most popular photocatalysts with hig...

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Bibliographic Details
Published in:Journal of Central South University 2023-04, Vol.30 (4), p.1086-1094
Main Authors: Yuan, Hai-bo, Ouyang, Yu-xin, Wang, Liang-bing
Format: Article
Language:English
Subjects:
Catalytic activity
Chemical synthesis
Electromagnetic absorption
Engineering
Holes (electron deficiencies)
Metallic Materials
Methylene blue
Oxidation
Photocatalysis
Photodegradation
Pollutants
Sol-gel processes
Solar energy
Stability
Titanium dioxide
Titanium oxides
Water pollution
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Summary:Water pollution problem is a significant trouble in our life. The photodegradation of organic pollutants in water, which is an environmentally friendly and economically feasible approach, has attracted considerable attention. Titanium oxide (TiO 2 ) is one of the most popular photocatalysts with high oxidation ability and excellent stability. In order to break the limitation of light absorption caused by the wide band gap, we synthesized metal ions doped TiO 2 via sol-gel method. The doped TiO 2 exhibited remarkable activity and stability in photocatalytic degradation of methylene blue (MB). Among the obtained materials, V/TiO 2 and Mo/TiO 2 had the superior performance of of > 98% within 30 min for photodegradation of MB. Further investigation of the mechanism revealed the promoted utilization of solar energy as well as the enhanced electron hole pairs of V/TiO 2 and Mo/TiO 2 , which allowed the boost of catalytic activity.
ISSN:2095-2899
2227-5223
DOI:10.1007/s11771-023-5241-8