Kinetic investigation of photocatalytic degradation of dimethyldisulfide by zeolite A containing nano CdS
الموضوعات : Iranian Journal of CatalysisAlireza Nezamzadeh-Ejhieh 1 , Zohreh Banan 2
1 - Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran.
2 - Department of Chemistry, Shahreza Branch, Islamic Azad University, P.O. Box 311-86145, Shahreza, Isfahan, Iran.
الکلمات المفتاحية: Zeolite A, Dimethydisulfide, CdS nanoparticles, Heterogeneous catalysis,
ملخص المقالة :
In this research, zeolite A was synthesized from waste porcelain and CdS nano-particles were doped in zeolite framework by a precipitation after an ion exchanging process. All raw and modified samples were characterized by FT-IR, XRD and SEM methods. Primary experiments showed that the good efficiency of loaded nano CdS onto the zeolite A for photodecomposition of dimethyldisulfide (DMDS) under UV irradiation. Hence the effect of some experimental parameters on the kinetics of the photodegradation experiments was studied and the optimal conditions were found as: pH 3, 3 g L–1 of the catalyst and 8 ppm of DMDS concentration. UV-Vis spectrophotometric measurements were performed to determine the degradation extent. The degradation process obeyed first-order kinetics.
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