Abatement of some commercial fungicide content from model dispersions by a new thiourea-graft-polyethyleneimine derivative

Highly Compressible, Superabsorbent, and Biocompatible Hybrid Cryogel Constructs Comprising Functionalized Chitosan and St. John’s Wort Extract

“…However, thiourea is mainly valued for its industrial uses, including the production of flame-retardant resins or as an auxiliary agent in light-sensitive photocopy paper . Because of its heteroatomic-rich structure, comprising two primary amino groups attached to a thiocarbonyl group, thiourea has recently been grafted on various polymers and used to design new materials for environmental or healthcare applications. ,, The thiocarbonyl group is a strong hydrogen bond acceptor; hence, it can form hydrogen bonds with other functional groups, such as carboxyl of hydroxyl. In view of this, the use of thiourea alongside CS could enhance the number of interaction sites with the polyphenols in HYP E and thus provide new hybrid biomaterials with outperforming features.…”

“…We recently prepared aerogels based on CS modified with thiourea moieties with excellent performance in the removal of Ag(I) and Pb(II) ions from highly concentrated aqueous mixtures . Considering the rich heteroatomic structure of thiourea, which includes two primary amino groups attached to a thiocarbonyl group, its grafting onto various polymers has attracted increasing interest in the development of new materials for environmental and biomedical applications. ,, The thiocarbonyl group in thiourea is a strong acceptor of hydrogen atoms, allowing it to form hydrogen bonds with other functional groups such as hydroxyl and carboxyl groups. Hence, thiourea-derived chitosan (CS) is used in this study to increase the number of interaction sites with polyphenols in Hypericum perforatum extract (HYP E ).…”

Self-Assembled Chitosan/Dialdehyde Carboxymethyl Cellulose Hydrogels: Preparation and Application in the Removal of Complex Fungicide Formulations from Aqueous Media

“…The sorption of four commercial fungicide formulations (Dithane M45 (Dt), Melody Compact 49 WG (MC), Curzate Manox (CM) and Cabrio ® Top (CT)) by the PEC hydrogels was performed in batch mode, at room temperature. The main constituents of the fungicide formulations and some properties of their suspensions are displayed in Figure 2 [12].…”

“…Consequently, several analytical methods have been developed and applied to monitor pesticide residues in food and environmental samples, including electrochemical techniques [8] and liquid and gas chromatography coupled with mass spectrometry [9,10]. Biological treatments, precipitation, flocculation, and advanced oxidation processes have also been employed to remove pesticides from aqueous media [11][12][13]. Nevertheless, some pesticides are found in complex formulations with various concentrations, meaning that the above-mentioned approaches are not applicable.…”