ZnO supported CoFe₂O₄ nanophotocatalysts for the mineralization of Direct Blue 71 in aqueous environments

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• 作者：Panneerselvam Sathishkumar^a ; ^b ; Nalenthiran Pugazhenthiran^a ; Ramalinga Viswanathan Mangalaraja^b ; ^{mangal@udec.cl} ; ^{rvmangalaraja@hotmail.com} ; Abdullah M. Asiri^c ; Sambandam Anandan^a ; ^{sanand@nitt.edu}
• 关键词：CoFe2O4/ZnO nanocatalysts ; Direct Blue 71 ; Photocatalytic mineralization ; Peroxomonosulphate
• 刊名：Journal of Hazardous Materials
• 出版年：2013
• 出版时间：15 May, 2013
• 年：2013
• 卷：252-253
• 期：Complete
• 页码：171-179
• 全文大小：2751 K

文摘

In this study, an attempt was made to render both the magnetic and photocatalytic properties in a semiconductor material to enhance the efficiency of degradation and recycling possibility of magnetic nanophotocatalysts. CoFe₂O₄ and CoFe₂O₄ loaded ZnO nanoparticles were prepared by a simple co-precipitation method and characterized using various analytical tools and in addition to check its visible light assisted photocatalytic activity. CoFe₂O₄/ZnO nanocatalyst coupled with acceptor, peroxomonosulphate (PMS) showed 1.69-fold enhancement in Direct Blue 71 (triazo dye; DB71) mineralization within 5 h. The accomplished enrichment in decolorization was due to the production of more number of non-selective and active free radicals at the catalyst surface.