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Improvement of the Photocatalytic Activity of Au/TiO 2 Nanocomposites by Prior Treatment of TiO 2 with Microplasma in an NH 3 and H 2 O 2 Solution

Author

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  • Nguyen Thi Thu Thuy

    (Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology, 144 Xuan Thuy Road, Cau Giay District, Hanoi 10000, Vietnam
    Faculty of Basic Science, University of Fire Prevention and Fighting, 243 Khuat Duy Tien, Thanh Xuan, Hanoi 10000, Vietnam)

  • Do Hoang Tung

    (Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 10000, Vietnam)

  • Le Hong Manh

    (Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 10000, Vietnam)

  • Pham Hong Minh

    (Institute of Physics, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street, Cau Giay District, Hanoi 10000, Vietnam)

  • Nguyen The Hien

    (Faculty of Engineering Physics and Nanotechnology, VNU University of Engineering and Technology, 144 Xuan Thuy Road, Cau Giay District, Hanoi 10000, Vietnam)

Abstract

Plasmonic photocatalytic nanocomposites of TiO 2 and Au nanoparticles (NPs) have recently attracted the attention of researchers, who aim to improve the photocatalytic activity of potential TiO 2 NPs. In this study, we report photocatalytic activity enhancement for a Au/TiO 2 nanocomposite prepared by the plasma–liquid interaction method using an atmospheric microplasma apparatus. The enhanced photocatalytic activity of the prepared Au/TiO 2 is demonstrated by the degradation of methylene blue (MB) in water under both ultraviolet (UV) and visible light irradiation. The prior treatment of TiO 2 with microplasma in a NH 3 and H 2 O 2 solution is found to strongly improve the photocatalytic activity of both the treated TiO 2 NPs, as well as the synthesized Au/TiO 2 nanocomposite.

Suggested Citation

  • Nguyen Thi Thu Thuy & Do Hoang Tung & Le Hong Manh & Pham Hong Minh & Nguyen The Hien, 2022. "Improvement of the Photocatalytic Activity of Au/TiO 2 Nanocomposites by Prior Treatment of TiO 2 with Microplasma in an NH 3 and H 2 O 2 Solution," J, MDPI, vol. 5(2), pages 1-10, May.
    • Handle: RePEc:gam:jjopen:v:5:y:2022:i:2:p:19-286:d:818878
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