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

Research output: Contribution to journalArticleScientificpeer-review

Researchers

Research units

  • China Jiliang University
  • Lappeenranta University of Technology

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).

Details

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

    Research areas

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

ID: 10856086