Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 612, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2020.125987
Keywords
Graphene oxide; Lambda-cyhalothrin; Poly(N-isopropylacrylamide); Temperature-responsive release; Pesticide delivery system
Categories
Funding
- Jiangsu Province Science and Technology Support Plan [BE2019391]
- Jiangsu Provincial Key Agricultural Research and Development Program (Modern Agriculture) R&D and application of key nano-dust technologies with light and temperature control functions [SBE2020347]
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This study developed a temperature-responsive pesticide formulation by loading lambda-cyhalothrin onto a PNIPAm-GO nanocomposite carrier, demonstrating controlled release based on temperature change. The formulation showed good water solubility, dispersion stability, and UV resistance, while the biological safety of PNIPAm-GO was also confirmed. The research has significantly advanced the development of intelligent pesticide formulations.
In recent years, stimuli-responsive controlled-release pesticide formulations have drawn extensive as they show huge potential in the practical application of agriculture. Herein, a multifunctional composite nanocarrier was prepared by our group, Poly(N-isopropylacrylamide) modified graphene oxide (PNIPAm-GO), this is a temperature-responsive release pesticide formulation that can regulate pesticide release based on the temperature change. Lambda-cyhalothrin (LC) was loaded on PNIPAm-GO nanocomposite carrier via a simple physisorption process and LC@PNIPAm-GO exhibited temperature-responsive controlled release performance leading to release of LC at a specified temperature and extended its persisted release time. In addition, the LC@PNIPAmGO controlled-release pesticide formulations showed both good water solubility and dispersion stability while its anti-UV property. Furthermore, we also assessed the biological safety of LC@PNIPAm-GO and proved that PNIPAm-GO is non-toxic. The study of this temperature-responsive pesticide formulation has promoted the development of intelligent pesticide formulations to great extent.
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