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To overcome these limitations, serious attention has been focused on the development of heterogeneous Fenton-like catalysts such as Fe-containing zeolites and clays [18–20].
Recently, Fe-containing mesoporous materials have attracted much attention because of their high surface area and uniform pore size distribution. In literature it has been reported that heterogeneous zeolite-based Fe catalysts, such as FeY and FeZSM-5, could provide similar catalytic activities as homogeneous Fe (II) ions [14,15,21]. The stability of these Fe containing heterogeneous catalysts and their catalytic activity towards dye degradation reaction largely depend on synthesis methods, composition and their framework structure. Apart from this, care should be taken to minimize the possibility of Fe leakage from heterogeneous support which often results new pollution of the treated water [16].
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