Mineral wool fibers incorporated with cuprous oxide for visible light photocatalytic inactivation of Escherichia coli

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

6 Scopus Citations
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Author(s)

  • Qingwei Zhu
  • Yihe Zhang
  • Fade Wu
  • Danjun Tan
  • Pengqi Wang

Detail(s)

Original languageEnglish
Pages (from-to)5407-5412
Journal / PublicationCeramics International
Volume40
Issue number4
Publication statusPublished - May 2014

Abstract

Mineral wool fibers (MWF) commonly used in building insulation and decoration are incorporated with cuprous oxide particles at room temperature to inactivate Escherichia coli (E. coli). X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet-visible diffuse reflection absorption spectroscopy (UV-vis/DRS) are employed to characterize the photocatalytic composites and the bactericidal effects are assessed by UV-visible spectrophotometry. Cuprous oxide particles with a size of 100 nm can be immobilized effectively on the surface of the MWF. The MWF improves the optical properties of cuprous oxide and red-shifts the band gap thereby enhancing the utilization efficiency of visible light. The Cu2O/MWF composites deliver excellent photocatalytic performance in the inactivation of E. coli. After illumination for 24 h, more than 95% of the bacteria are inactivated and the materials are suitable for indoor antibacterial applications. © 2013 Elsevier Ltd and Techna Group S.r.l.

Research Area(s)

  • Building materials, Cuprous oxide, Inactivation, Mineral wool fibers, Photocatalysis

Citation Format(s)