Photocatalytic degradation of Maxilon C.I. basic dye using CS/CoFe2O4/GONCs as a heterogeneous photo-Fenton catalyst prepared by gamma irradiation

Abdullah A Al-Kahtani; Manal F Abou Taleb

doi:10.1016/j.jhazmat.2016.01.071

Photocatalytic degradation of Maxilon C.I. basic dye using CS/CoFe2O4/GONCs as a heterogeneous photo-Fenton catalyst prepared by gamma irradiation

J Hazard Mater. 2016 May 15:309:10-9. doi: 10.1016/j.jhazmat.2016.01.071. Epub 2016 Jan 30.

Authors

Abdullah A Al-Kahtani¹, Manal F Abou Taleb²

Affiliations

¹ Chemistry Department, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia; Pharmaceutical Chemistry Department, College of Pharmacy, Prince Sattam Bin Abdulaziz University, P. O. Box 173, Alkharj 11942, Saudi Arabia.
² Chemistry Department, College of Science and Humanities, Prince Sattam Bin Abdulaziz University, P. O. Box 173, Alkharj 11942, Saudi Arabia; Polymer Department National Center for Radiation Research and Technology, Nasr city, Cairo, Egypt. Electronic address: abutalib_m@yahoo.com.

PMID: 26872328
DOI: 10.1016/j.jhazmat.2016.01.071

Abstract

CS/CF/GONCs were synthesized via gamma irradiation cross-linking method with the aid of sonication. The nanocomposites exhibited a photo-Fenton catalytic feature for the degradation of Maxilon C.I. basic dye in aqueous medium using sunlight. The effects of pH, H2O2 concentration, and dosage of the catalyst, on the degradation rates of the dyes were examined. The optimal degradation rate was reached with 10mM H2O2 at pH 9.5. It was verified that the Maxilon C.I. basic dye degradation rate fits a pseudo-first-order kinetics for different initial concentrations of Maxilon C.I. dye. Fourth cyclic tests for Maxilon C.I. degradation showed that the magnetic catalyst was very stable, recoverable, highly active, and easy to separate using an external magnet. Hence, this magnetic catalyst has potential use in organic pollutant removal.

Keywords: CoFe(2)O(4); Gamma radiation.; Graphene oxide; Maxilon C.I. basic dye; Photo-Fenton.