Sterilization of E. Coli by Fe-Doped TiO2 Modified Photocatalytic Paint under Visible Light Irradiation

Rong Liang He; Yi Wei; Wen Bin Cao

doi:10.4028/www.scientific.net/KEM.368-372.1493

Paper Titles

Preparation and Characterization of Raspberry-Like TiO₂/Cu Composite Particles
p.1480

Influence of Cu²⁺ Doping on the Photocatalytic Activity of TiO₂ Film
p.1483

Visible Light Photoreduction Properties of N-Doped TiO₂ Nanostructured Films
p.1486

Hydrothermal Synthesis of Fe/N Co-Doped Titanium Dioxide and its Sterilization Activity via E. Coli under Visible Light Irradiation
p.1489

Sterilization of E. Coli by Fe-Doped TiO₂ Modified Photocatalytic Paint under Visible Light Irradiation
p.1493

Nanoporous TiO₂/SiO₂ Composite Prepared by a Combined Sol-Gel and Hybrid Method
p.1497

Preparation and Photocatalytic Property of WO₃-TiO₂ /Ti Ceramic Film via Anodic Oxidation Treatment
p.1500

A Series of Bi-Based Oxychlorides as Efficient Photocatalysts
p.1503

Tri-Metallic Catalyst for Mass Production of Quasi-Aligned Carbon Nanotubes by Thermal Chemical Vapor Deposition
p.1507

HomeKey Engineering MaterialsKey Engineering Materials Vols. 368-372Sterilization of E. Coli by Fe-Doped TiO2 Modified...

Sterilization of E. Coli by Fe-Doped TiO₂ Modified Photocatalytic Paint under Visible Light Irradiation

Abstract:

Photocatalytic paint was prepared by adding Fe-doped TiO2 nanocrystalline powders into self-engineered oxidation-resistant latex paint system. The UV-Vis diffuse reflectance spectroscopy was used to characterize the light absorption properties of the paint. The colony counting method was used to study photocatalytic sterilization ratio of E. coli under visible light irradiation. Effects of the kinds and amounts of TiO2 powders added in the paint on the sterilization ratio under visible light irradiation with fixed relative humidity were systematically investigated. The UV-Vis diffuse reflectance spectroscopy indicates that the absorption thresholds of the Fe-doped TiO2 paint have red-shifted into visible light region. The antibacterial experiment results show that the sterilization ratio of E. coli can exceed more than 99% in less than 4 hours under 400-lux-visible light irradiation under RH of 55%.