Decomposition of 2-naphthol in water and antibacterial property by NiO and CeO<i><sub>x</sub></i> modified TiO<sub>2</sub> in the dark or under visible light

DOI Web Site 2 Citations 4 References Open Access
  • KATO Chihiro
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
  • SHIOHARA Mimori
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
  • SUNADA Kayano
    Antibacterial and Antiviral Research Group, Kanagawa Institute of Industrial Science and Technology
  • ISOBE Toshihiro
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
  • YAMAGUCHI Akira
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
  • MATSUSHITA Sachiko
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
  • ISHIGURO Hitoshi
    Antibacterial and Antiviral Research Group, Kanagawa Institute of Industrial Science and Technology
  • MIYAUCHI Masahiro
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
  • NAKAJIMA Akira
    Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology

Bibliographic Information

Other Title
  • Decomposition of 2-naphthol in water and antibacterial property by NiO and CeOx modified TiO2 in the dark or under visible light

Abstract

<p>Rutile-type TiO2 was modified with NiO and CeOx using chemisorption calcination cycle method. Then the decomposition activity of 2-naphthol in water was evaluated in the dark or under visible light at 50°C. Little difference was found in the specific surface area or crystal phase before and after modification. The NiO modification decreased the apparent bandgap and provided photocatalytic decomposition activity under visible light. Results suggest that the formation of a Ti–O–Ni interfacial bond yielding a surface d sub-band plays an important role in this increased activity. Although the NiO-modified TiO2 possessed decomposition activity only under visible light, additional modification of CeOx onto the material enabled decomposition of 2-naphthol in water in the dark at 50°C. The dark activity was attributed to the Mars–van Krevelen mechanism of Ce in CeOx. The NiO-modified TiO2 exhibited high antibacterial activity against Escherichia coli and Staphylococcus aureus under visible light at room temperature.</p>

Journal

Citations (2)*help

See more

References(4)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top