Sensitive and Selective Responses of Poly(Para-Phenylene Vinylene)/Zeolite Y-Based Sensors Toward Ketone Vapors

摘要

Poly (p-phenylene vinylene) doped with H2SO4 is mixed into zeolite Y matriced to improve the electrical conductivity responses toward ketone vapors. The effect of cation type, cation concentration, and ketone vapor type on the electrical conductivity response toward ketone vapors of dPPV_zeolite Y composites is investigated. The sensitivities of the composites increase linearly with increasing surface area and decreasing cationic radius of the cation in zeolite Y. The highest sensitivity is obtained with the dPPV_[90] NH4~+ Y when exposed to acetone, whereas in MIBK shows the lowest sensitivity The interactions between the ketone molecules and the composites are investigated though the FTIR.