Fabrication of TiO2 composite materials for air purification by magnetic field effect and electrocodeposition

S. Yonemochi, A. Sugiyama, K. Kawamura, T. Nagoya, R. Aogaki

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Novel air purification materials were fabricated by the application of a magnetic field. In a magnetic field perpendicular to a copper plate, nickel particles with a diameter of 10 μm were arranged to form numerous pillar-like structures on the matrix surface, and copper as a binder was deposited onto the three-dimensional surface. The total surface area of the pillars and the matrix increased with the magnetic flux density, up to about 800 cm2 per cm2 of the original matrix surface at 6.2 T. After successful codeposition of TiO2 particles on the fabricated materials by electroplating, their photocatalytic activities were evaluated on the basis of the removal efficiency of nitrogen oxides (NOx), which are some of the most hazardous air pollutants. It was concluded that the samples with the pillar-like structures had two opposite characteristics: large surface area as a positive effect and shadowing against ultraviolet (UV) irradiation as a negative effect. However, total photocatalytic activity increased to twice as much as that of the fiat sample by improving the UV irradiation method and the preparation condition of the materials.

Original languageEnglish
Pages (from-to)1279-1285
Number of pages7
JournalJournal of Applied Electrochemistry
Volume34
Issue number12
DOIs
Publication statusPublished - 2004 Dec
Externally publishedYes

Keywords

  • Electrocodeposition
  • Magnetic field effect
  • Materials
  • Nitrogen oxides
  • Photocatalyst
  • Titanium oxide

ASJC Scopus subject areas

  • Electrochemistry

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