Sulfur Dioxide Sensing Properties of PEDOT: PSS/Y Zeolite Composites: Effect of Metal Ion Exchanged Y Zeolite Layer

By : Pojjawan Chanthaanont, Tharaporn Permpool, Anuvat Sirivat

Page No: 529-538

Abstract
The electrical sensitivity response of poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate), PEDOT: PSS, was investigated for sensing sulfur dioxide. The influence of the metal-exchanged Y zeolite, MY zeolite covering layers, on the sensing properties of PEDOT: PSS toward sulfur dioxide was compared with that of the conventional PEDOT: PSS/ MY composites fabricated through mechanical mixing and compression. The layer thickness of the MY zeolite was also influential towards the sensitivity of PEDOT: PSS which can be related to the metal ion content. The electrical sensitivity response of PEDOT: PSS toward sulfur dioxide was clearly enhanced when it was covered with the MY zeolite layers. The response and recovery times also increased with increasing thickness of the MY zeolite layer.

Authors :
Pojjawan Chanthaanont, Tharaporn Permpool and Anuvat Sirivat : Conductive and Electroactive Polymers Research Unit, The Petroleum and Petrochemical College, Chulalongkorn University, Bangkok, 10330, Thailand.