Enhanced photocatalytic activity of Bi2WO6/TiO2composite coated polyester fabric under visible light irradiation

Zoufei Du, Cheng Cheng, Lin Tan, Jianwu Lan, Shou-xiang Kinor Jiang, Ludan Zhao, Ronghui Guo

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

In this study, a visible-light-driven photocatalyst Bi 2WO 6/TiO 2 composite was reported using one-step hydrothermal method and then coated on the polyester fabric. The samples were systematically characterized by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) surface area, UV–vis diffuse reflection spectroscopy and photoluminescence spectroscopy (PL). The photocatalytic activity of Bi 2WO 6/TiO 2 coated polyester fabric was evaluated by degradation of Rhodamine B (RhB) and Methylene blue (MB) under visible light irradiation. The self-cleaning property of the fabrics was assessed through removing red wine stain. The results reveal that the Bi 2WO 6/TiO 2 composites with irregular shape are coated on the polyester fabric successfully. The UV–vis absorption spectra show a broad absorption band in the visible region, which extends the scope of absorption spectrum and helps to improve the photocatalytic degradation efficiency. Photocatalytic activities of the Bi 2WO 6/TiO 2 composite polyester fabric are associated with the content of TiO 2. Bi 2WO 6/15%TiO 2 coated polyester fabric exhibits the degradation efficiency for RhB and MB up to 98% and 95.1%, respectively, which is much higher than that of pure Bi 2WO 6 and TiO 2 coated polyester fabric. Moreover, Bi 2WO 6/15%TiO 2 coated polyester fabric shows good cycle stability toward continuous three cycles of photocatalytic experiment for dyes degradation. In addition, the Bi 2WO 6/TiO 2 coated polyester fabric shows good self-cleaning property. This work could be extended to design of other composite photocatalyst coating on the fabric for enhancing activity by coupling suitable wide and narrow band-gap semiconductors.

Original languageEnglish
Pages (from-to)626-634
Number of pages9
JournalApplied Surface Science
Volume435
DOIs
Publication statusPublished - 30 Mar 2018

Keywords

  • Bi WO /TiO coating
  • Photocatalytic activity
  • Polyester fabric
  • Self-cleaning
  • Visible light

ASJC Scopus subject areas

  • Surfaces, Coatings and Films

Cite this