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Nanobiopesticides: Silica nanoparticles with spiky surfaces enable dual adhesion and enhanced performance

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Zhang, J., Brown, G. W., Fu, J., James, P., Mukandiwa, L., Huang, X. and Yu, C. (2020) Nanobiopesticides: Silica nanoparticles with spiky surfaces enable dual adhesion and enhanced performance. EcoMat, 2 (2), e12028. ISSN 2567-3173


Article Link: https://doi.org/10.1002/eom2.12028

Publisher URL: https://onlinelibrary.wiley.com/doi/abs/10.1002/eom2.12028


Biopesticides, such as spinosad, are a new-generation of ecofriendly pesticides in livestock industry. However, spinosad suffers from short duration of effectiveness and low potency in field conditions. Herein we report the development of a new nanospinosad design with dual adhesion and protection functions. Silica nanoparticles with spiky nanotopography loaded with spinosad possess rough surfaces. When applied topically, this nanospinosad formulation exhibited enhanced adhesion to both cattle hair and pest surface. The dual adhesion property led to significantly higher pest mortality toward tick (Rhipicephalus microplus, an ectoparasite) than a nanospinosad formulation using nanoparticles with smooth surface and a benchmark commercial product. The adhesion performance was further quantitatively measured using rainfastness test. Moreover, solar radiation test revealed that the nanospinosad exhibited >10 times higher photostability over the commercial product. This work paves the way toward the development of high performance nanobiopesticides for sustainable agricultural applications.

Item Type:Article
Business groups:Animal Science
Additional Information:Open access
Keywords:pesticides dual adhesion mesoporous silica pest control silica nanoparticles AgTech
Subjects:Animal culture > Cattle
Veterinary medicine > Veterinary parasitology
Animal culture > Rangelands. Range management. Grazing
Animal culture > Equipment and supplies
Live Archive:08 Jun 2020 03:03
Last Modified:03 Sep 2021 16:45

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