Highly efficient photocatalytic degradation of methylene blue using carbonaceous WO3/TiO2 composites

Khadijeh Beigom Ghoreishi, Nilofar Asim, Zatil Amali Che Ramli, Zeynab Emdadi, Mohd. Ambar Yarmo

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Recent improvements in the performance of photocatalysts made it possible to tackle pollution through environment friendly methods. This study investigates the modification of the photocatalytic activity of TiO2 by employing WO3 and conductive polymers, namely, polyaniline (Pani) and polypyrrole (Ppy). Basing on our previous improvement of TiO2 using a conductive polymer and activated carbon (AC), this study determines the activated carbon forms of TiO2. The prepared composites are characterized using X-ray powder diffraction, transmission electron microscopy, Fourier transform infrared, thermogravimetric analysis, Brunauer–Emmet–Teller, and UV–Vis spectroscopy. The specific surface area of the mesoporous composites is as follows: WO3/TiO2·AC (Pani) > WO3/TiO2·AC (Ppy) > WO3/TiO2·Pani > WO3/TiO2·Ppy (127 > 98 > 68 > 44 m2 g−1), which exhibited a similar trend to the photocatalytic performances (100 > 95 > 91 > 72 % conversion rate). This result could be attributed to higher porosity, surge of charge separation, and photo-responding range extension induced by the synergistic effect of WO3, conducting polymers, and TiO2 in the samples.

Original languageEnglish
Pages (from-to)629-637
Number of pages9
JournalJournal of Porous Materials
Volume23
Issue number3
DOIs
Publication statusPublished - 1 Jun 2016

Fingerprint

Methylene Blue
Polypyrroles
Polyaniline
Activated carbon
Polymers
Degradation
Composite materials
Conducting polymers
Photocatalysts
Specific surface area
X ray powder diffraction
Thermogravimetric analysis
Fourier transforms
Pollution
Porosity
Spectroscopy
Transmission electron microscopy
Infrared radiation
polyaniline
polypyrrole

Keywords

  • Activated carbon
  • Mesoporous
  • Photocatalyst
  • TiO
  • WO

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)

Cite this

Highly efficient photocatalytic degradation of methylene blue using carbonaceous WO3/TiO2 composites. / Ghoreishi, Khadijeh Beigom; Asim, Nilofar; Che Ramli, Zatil Amali; Emdadi, Zeynab; Yarmo, Mohd. Ambar.

In: Journal of Porous Materials, Vol. 23, No. 3, 01.06.2016, p. 629-637.

Research output: Contribution to journalArticle

Ghoreishi, Khadijeh Beigom ; Asim, Nilofar ; Che Ramli, Zatil Amali ; Emdadi, Zeynab ; Yarmo, Mohd. Ambar. / Highly efficient photocatalytic degradation of methylene blue using carbonaceous WO3/TiO2 composites. In: Journal of Porous Materials. 2016 ; Vol. 23, No. 3. pp. 629-637.
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