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The impact of structure of graphene-based materials on removal of organophosphorus pesticides from water

Abstract

A wide use of pesticides in modern agriculture and other areas results in an urgent need for their efficient removal from the environment. Adsorption of pesticides is one of the most commonly used strategies for this task. Here we analyze the adsorption of two organophosphorus pesticides, dimethoate (DMT) and chlorpyrifos (CPF), on graphene-based materials. The adsorption was found to be very sensitive to the structure of the used adsorbents. In particular, aliphatic DMT was found to prefer hydrophilic oxidized graphene surfaces. CPF molecule, which contains aromatic moiety, prefers adsorption on surface high structural order and preserved π electron system of the graphene basal plane. Toxicity of pesticides solutions is reduced after adsorption, suggesting that there is no oxidation of DMT and CPF to more toxic oxo-forms. We emphasize that the combination of structural properties of adsorbents and adsorbates defines the adsorption of organophosphorus pesticides on graphene-based materials, while the specific surface area of adsorbents is not the major factor.

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Publication details

The article was received on 07 Feb 2018, accepted on 03 May 2018 and first published on 04 May 2018


Article type: Paper
DOI: 10.1039/C8EN00171E
Citation: Environ. Sci.: Nano, 2018, Accepted Manuscript
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    The impact of structure of graphene-based materials on removal of organophosphorus pesticides from water

    T. Lazarevic-Pasti, V. Anicijevic, M. Baljozovic, D. Vasic Anicijevic, S. Gutic, V. Vasic, N. V. Skorodumova and I. A. Pasti, Environ. Sci.: Nano, 2018, Accepted Manuscript , DOI: 10.1039/C8EN00171E

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