Photocatalytic antibacterial performance of Sn4+-doped TiO2 thin films on glass substrate

Sayilkan F., Asilturk M., KİRAZ N., BURUNKAYA E., ARPAÇ E., Sayilkan H.

JOURNAL OF HAZARDOUS MATERIALS, vol.162, no.2-3, pp.1309-1316, 2009 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 162 Issue: 2-3
  • Publication Date: 2009
  • Doi Number: 10.1016/j.jhazmat.2008.06.043
  • Journal Name: JOURNAL OF HAZARDOUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1309-1316
  • Keywords: Sn4+-doped TiO2, Antibacterial surface coating, Escherichia coli, Staphylococcus aureus, MALACHITE GREEN-DYE, SOL-GEL PROCESS, TITANIUM-DIOXIDE, STAINLESS-STEEL, PHOTOINDUCED HYDROPHILICITY, WETTABILITY CONVERSION, SIZE DISTRIBUTION, DEGRADATION, NANOPARTICLES, UV
  • Akdeniz University Affiliated: Yes

Abstract

Pure anatase, nanosized and Sn4+ ion doped titanium dioxide (TiO2) particulates (TiO2-Sn4+) were synthesized by hydrothermal process. TiO2-Sn4+ was used to coat glass surfaces to investigate the photocatalytic antibacterial effect of Sn4+ doping to TiO2 against gram negative Escherichia coli (E. coli) and gram positive Staphylococcus aureus (S. aureus). Relationship between solid ratio of TiO2-Sn4+ in coatings and antibacterial activity was reported. The particulates and the films were characterized using particle size analyzer, zeta potential analyzer, Brunauer-Emmett-Teller (BET), X-ray diffractometer (XRD), SEM, AAS and UV/VIS/NIR techniques. The results showed that TiO2-Sn4+ is fully anatase crystalline form and easily dispersed in water. Increasing the solid ratio of TiO2-Sn4+ from 10 to 50% in the coating solution increased antibacterial effect. (C) 2008 Elsevier B.V. All rights reserved.