Fabrication of color changeable indicating film for C 2H 4 by controlling the redox reaction of molybdate

Jin Ho Kim, Seimei Shiratori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Color indicating film was fabricated by depositing SiO 2 nanoparticles on the filter paper absorbing the indicating solution synthesized with palladium sulfate and ammonium molybdate. The color of indicator film without SiO 2 was easily changed from white to blue in air because PdSO 4 remarkably accelerates the redox reaction of ammonium molybdate. In this study, we successfully diminished the color change of indicator in air by controlling the amount of SiO 2 on filter paper using a layer-by-layer self-assembly method. Finally, the color of indicating film prepared with (PDD A/SiO 2) 30 was white without color change in air. When this indicating film was exposed to C 2H 4 (50 - 150 ppm), the Hunter values (L, a, and b) were gradually decreased until 8 days and then maintained, which gave rise to the large total color difference of indicator from white to dark blue. Therefore this color indicator film will be a promising sensor for the system to preserve freshness during the storage of fruits or vegetables.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages1598
Number of pages1
Volume54
Edition1
Publication statusPublished - 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period05/5/2505/5/27

Fingerprint

Redox reactions
Color
Fabrication
Air
Vegetables
Fruits
Self assembly
Palladium
Nanoparticles
Sensors

Keywords

  • Color Changeable Film
  • Ethylene Gas
  • Layer-by-layer Self-assembly
  • Molybdate

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Fabrication of color changeable indicating film for C 2H 4 by controlling the redox reaction of molybdate. / Kim, Jin Ho; Shiratori, Seimei.

Polymer Preprints, Japan. Vol. 54 1. ed. 2005. p. 1598.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, JH & Shiratori, S 2005, Fabrication of color changeable indicating film for C 2H 4 by controlling the redox reaction of molybdate. in Polymer Preprints, Japan. 1 edn, vol. 54, pp. 1598, 54th SPSJ Annual Meeting 2005, Yokohama, Japan, 05/5/25.
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