摘要
The solid-phase photocataKtic degradation of polyvinyl chloride(PVC)plastic with AgNbO_(3)/Fe_(2)O_(3) is studied under visible-light irradiation.The PVC-(AgNbO_(3)/Fe_(2)O_(3))samples are characterized by X-ray photoelectron spectroscope(XPS),scanning electron microscope(SEM),gas chromatography(GC),and UV-vis diffusion reflectance spectra(UV-vis DRS).The photocatalytic properties of PVC-(AgNbO_(3)/Fe_(2)O_(3))samples are systematically investigated.More amounts of generated CO2,greater texture change and higher weight loss rate were exhibited in the system of PVC-(AgNbO_(3)/Fe_(2)O_(3))than pure PVC film.The weight loss rate is ten times higher than that of pure PVC film,which reaches to 46.53%with optimum amount of O.5wt% Fe_(2)O_(3).Active radicals generate primarily on the surface of Fe_(2)O_(3) particles,which cause composite plastic decomposition on the PVC-(AgNbO_(3)/Fe_(2)O_(3))interface and extend into polymer interor.The study provides a new promising way to degrade the plastic waste under visible-light.
基金
Supported by Science and Technology Department of Jilin Province(20200101018JC,20190303086SF and 20200201011JC)。
