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Photocatalytic Activity of TiO-Doped Fe, Ag, and Ni with N under Visible Light Irradiation.

Authors:
Byung-Geon Park

Gels 2021 Dec 24;8(1). Epub 2021 Dec 24.

Department of Food and Nutrition, Kwangju Women's University, 165 Sanjung-dong, Gwangju 62396, Korea.

Doping with noble metal ions or doping with nitrogen has been attempted to prepare TiO that reacts even in visible light. In this study, TiO was doped with nitrogen and various metal ions instead of noble metals. The TiO photocatalysts doped with metal ions (Fe, Ag, Ni) and nitrogen were prepared by a sol-gel method. Their physicochemical properties were characterized and their photocatalytic activities were investigated under visible light irradiation. In TiO doped with metal ions and nitrogen, the light absorption region was extended to visible light. The photoluminescence intensity was much greater in N/Ni/TiO than in N/Ag/TiO and N/Fe/TiO. The photolysis activities of N/Ni/TiO were the highest in formaldehyde decomposition and methylene blue decomposition. The sterilization efficiency of N/Ni/TiO was the highest in the evaluation test for the inhibition of the proliferation of . The bandgap of N/Ni/TiO was 2.4 eV, which was significantly lower than that of anatase TiO (3.2 eV). The N/Ni/TiO had a much higher optical intensity than other metal ion-doped TiO, so it was highly active under visible light irradiation.

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http://dx.doi.org/10.3390/gels8010014DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8775111PMC
December 2021

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