Abstract
Polymerization of citric acid onto the surface of oxidized multiwall carbon nanotubes led to the formation of MWCNTgraft-poly (citric acid) (MWCNT-g-PCA) hybrid materials. Because of the presence of conjugated citric acid branches, synthesized MWCNT-g-PCA hybrid materials were not only soluble in water but also able to trap water-soluble chemical species and metal ions. Trapping of pesticides such as Zineb, Mancozeb, Benomyl, Trichlorfon, and Pymetrozine (chess) in aqueous solution by MWCNT-g-PCA hybrid materials led to Encapsulated Pesticide (EP) into the polycitric acid shell. Optimum conditions for encapsulation of the pesticides in hyper branch polycitric acid such as pH, time of stirrer, and temperature were investigated by UV-Vis spectroscopy method. Encapsulation of pesticides on CNT-g-PCA hybrid material was confirmed via TEM analysis. Furthermore, the effect of encapsulated pesticides on Alternaria alternate fungi was investigated. Experiments indicated that new CNT-g-PCA-EP hybrid materials in comparison with bulk pesticides had a superior toxic influence on Alternaria alternata fungi.
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Sarlak, N., Taherifar, A. (2017). Encapsulation of Nanomaterials and Production of Nanofertilizers and Nanopesticides: Insecticides for Agri-food Production and Plant Disease Treatment. In: Ghorbanpour, M., Manika, K., Varma, A. (eds) Nanoscience and Plant–Soil Systems. Soil Biology, vol 48. Springer, Cham. https://doi.org/10.1007/978-3-319-46835-8_18
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