Synthesis of ZnS decorated carbon fibers nanocomposite and its application in photocatalytic removal of Rhodamine 6G from aqueous solutions


Journal: Vol.10, No.1, Winter 2017 - Article 3   Pages :  13 Until 21



Article Code:
PCCC-2016-10-26-342

Authors:
A. Mehrizad: Tabriz Branch, Islamic Azad University - Department of Chemistry
P. Gharbani: Ahar Branch, Islamic Azad University - Department of Chemistry


Article's abstract:

.Zinc sulfide/carbon nanofibers ZnS/CNFs composite was successfully synthesized through a facile and simple method. The X-ray diffraction XRD patterns revealed the formation of ZnS decorated CNFs composite. The photocatalytic activity of ZnS/CNFs composite was investigated by the photodegradation of Rhodamine 6G Rh-6G dye in aqueous solutions. The effect of operational parameters such as initial Rh-6G concentration, ZnS/CNFs composite amount, pH and irradiation time were analyzed and optimized by response surface methodology RSM in photocatalysis process. The results revealed that the removal percentage of Rh-6G increased with increasing of ZnS/CNFs composite amount, pH and irradiation time, whereas higher initial dye concentration was unfavorable. The findings also showed that under optimum conditions initial Rh-6G concentration 6 mg L-1, ZnS/CNFs composite amount 1.25 g L-1, pH 8 and irradiation time 48 min and exposure of UV-C light irradiation 20 W m-2, the ZnS/CNFs composite exhibited a remarkable photodegradation of Rh-6G dye in aqueous media 99.17.


Keywords:
Carbon nanofibers, Photocatalyst, Rhodamine 6G, Zinc sulfide.

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