Catalytic activity of polyaniline/MnO2 composites towards the oxidative decolorization of organic dyes

The preparation of well-defined dendrimer-encapsulated palladium and platinum nanoparticles and their catalytic evaluation in the oxidation of morin

“…The oxidation of morin is used as a model reaction for catalytic bleaching in laundry detergents [28,29]. Manganese based systems have been reported to be efficient catalysts in the oxidation of morin [29][30][31]. In their study Gemeay et al [30] carried out a study on the oxidation of organic dyes, including morin, on polyaniline/MnO 2 composites using hydrogen peroxide as the oxidant.…”

A Polianilina No Cenário Ambiental: Uma Aborgagem Sobre Fotocatálise Heterogênea

“…56,68,73,76,[83][84][85][86] Além disso, há catalisadores formados por mais de duas fases, resultando em associações como PANI/Fe 3 O 4 /SiO 2 /TiO 2 , PANI/Fe 3 O 4 /ZnO e PANI/Ag 3 PO 4 /OG. Em geral, as estratégias em adicionar outros materiais envolvem: (i) separação do catalisador do meio por sedimentação, imobilização em substratos, ou por campo magnético; (ii) melhor separação e transporte de cargas, como, por exemplo, através do uso materiais com alta afinidade por elétrons como OG e GR e (iii) aumento das interações entre contaminante e catalisador.…”

An Efficient Removal of Toxic Cr(VI) from Aqueous Solution by MnO2 Coated Polyaniline Nanofibers: Kinetic and Thermodynamic Study

“…While, Bhaumik et al performed that, selective adsorption of Cr(VI) ions from aqueous solution was achieved in the presence of other co-existing ions using polypyrrole-polyaniline (PPy-PANI) nanofiber with maximum adsorption capacity of 227 mg/g [13]. Gemeay et al reported the, PANI-MnO 2 composites have been used as catalysts for the removal of textile dyes from aqueous solutions [14]. Shyaa et al reported an in-situ polymerization method to synthesize PANI/zeolite nanocomposite and its application in removal of Cr(VI) ions from aqueous solution [15].…”