Effect of a pulsed electric field on the synthesis of TiO2 and its photocatalytic performance under visible light irradiation

Bing Han*, Zhi Chen, Marjatta Louhi-Kultanen

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

Pure anatase TiO2 nanoparticles were synthesized by sol-gel method under a pulsed electric field (PEF). The morphology and properties of the prepared materials were characterized by X-ray diffraction (XRD), Raman spectroscopy, transmission electron microscopy (TEM) and UV–vis absorption spectra. The surface area was also analyzed by BET method. Oxalic acid and formic acid were used as model pollutants, and the degradation performance of the TiO2 was examined using the as-prepared samples as photocatalysts. Enhanced photocatalytic activity under visible light irradiation was observed on the PEF-assisted synthesized TiO2. Higher photocatalytic efficiency was obtained with either higher pulse frequency (949 Hz) and shorter treatment time (12 min), or lower frequency (50 Hz) and longer treatment time (24 min).

Original languageEnglish
Pages (from-to)137-144
Number of pages8
JournalPowder Technology
Volume307
DOIs
Publication statusPublished - 1 Feb 2017
MoE publication typeA1 Journal article-refereed

Keywords

  • Anatase
  • Photocatalysis
  • Pulsed electric field
  • Titanium dioxide
  • Visible light

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