Dye degradation effect of rayon fibers containing titanium oxide photocatalyst

Tetsuya Takahashi, Wakako Kasai, Tetsuo Kondo

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Rayon fibers containing a titanium oxide photocatalyst were prepared to examine their dye decomposition effect. Although irradiation with ultraviolet rays caused no dye decomposition when the fibers were placed in air, the irradiation readily caused dye decomposition when the fibers were placed in an aqueous dye solution. The hygroscopicity of fibers was subsequently studied to find how it affects the dye decomposition effect of fibers. Little dye decomposition effect was found when titanium oxide was added to polypropylene, which is not hygroscopic at all. The result seems to show that, because the fiber material, which completely lacks hygroscopicity, kept the aqueous dye solution from being absorbed by the fibers to prevent reactions between dye molecules and titanium oxide particles imbedded inside the fibers.

Original languageEnglish
Pages (from-to)167-175
Number of pages9
JournalJournal of Fiber Science and Technology
Volume65
Issue number7
DOIs
Publication statusPublished - 2009

All Science Journal Classification (ASJC) codes

  • Chemical Engineering (miscellaneous)
  • Materials Science (miscellaneous)
  • Polymers and Plastics
  • Industrial and Manufacturing Engineering

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