Sorescu, Ana AlexandraAna AlexandraSorescuNuta, AlexandrinaAlexandrinaNutaIon, Rodica MarianaRodica MarianaIonDavid, MadalinaMadalinaDavid2020-10-092020-10-092020-10http://hdl.handle.net/123456789/1634Book of Abstracts, 23rd International Symposium The Environment and the Industry, E-SIMI 2020, 24-25 September 2020, pp. 20-21Nowadays, there is a growing need for methods that contribute to the environmental protection and help increase the human well – being and, therefore, different pollutants are studied: pharmaceuticals, hormones, polycyclic aromatic hydrocarbons and dyes. Among them, a special attention needs to be paid to dyes and especially organic dyes due to the fact that their accumulation in water bodies s responsible for reducing the reoxygenation ability killing the marine organisms by blocking the sunlight. Photocatalytic degradation using metallic nanoparticles has numerous advantages to the conventional route of quick oxidation because neither polycyclic compounds nor the oxidation of different pollutants appears. This research paper describes the use of silver nanoparticles (AgNPs) and ferrite nanoparticles (Fe3O4NPs) for the catalytic degradation of three azoic dyes: Direct Orange 26 (DO26), Direct Black 38 (DBk38) and Direct Brown 2 (DBr2). Silver nanoparticles were prepared using a “green chemistry” approach from aqueous extracts of different plants with important health benefits: Gooseberry, Acacia and Jujube. The degradation of DO26 was also investigated under direct sunlight using TiO2, ferrite nanoparticles and Fenton reagent.enAzo – dyesCatalytic degradationMetallic nanoparticlesconference poster