Interactions between CO and Poly(p-phenylene vinylene) as Induced by Ion-Exchanged Zeolites

Materials

关键词: conductive polymer;    electrical conductivity;    CO;    ion-exchanged zeolites;   

DOI  :  10.3390/ma2042259

来源: DOAJ

【 摘 要 】

The effects of zeolite type, ion-exchanged level, and ion type on the electrical conductivity responses of poly(p-phenylene vinylene) (PPV), doped poly(p-phenylene vinylene) (dPPV) and zeolite composites under CO exposures were investigated. The electrical sensitivity of dPPV/Cu+-ZSM5(Si/Al = 23) system shows a negative sensitivity value of −0.154, while the Na+ system gives a positive sensitivity of 1.48. Based on FTIR and TPD data, the positive response of PPV/Na+-ZSM5 stems from the CO molecules acting as a secondary dopant. On the other hand, the negative response of PPV/Cu+-ZSM5 originates from the fact that CO molecules are selectively adsorbed on Cu+ sites rather than C+ sites of doped PPV.

【 授权许可】

Unknown