Journal
CHEMICAL ENGINEERING JOURNAL
Volume 411, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2020.127881
Keywords
Near-infrared light; Photothermal; Controlled-release; Magnetic collectability; Imidacloprid; Zeolitic imidazolate framework-8
Categories
Funding
- Science and Technology Service Program of Chinese Academy of Sciences [KFJ-STSQYZD-115]
- National Key R&D Program of China [2018YFD0300903-4]
- Key R&D Program of Ningxia Province [2018BBF02021]
- Fundamental Research Funds for the Central Universities [2232020D-22]
- Open Research Fund of Key Laboratory of High Magnetic Field and Ion Beam Physical Biology
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A near infrared light-driven release imidacloprid with magnetic collectability property was successfully constructed, utilizing a combination of AG, CP, ZIF-8, IM, and Fe3O4. This technology showed excellent controlled-release property, efficient loading of IM molecules, and convenient collection of remaining NDRI from water.
A near infrared light (NIRL)-driven release imidacloprid (NDRI) with magnetic collectability property was constructed using agarose hydrogel (AG), CuS-polydopamine (CP), zeolitic imidazolate framework-8 (ZIF-8), imidacloprid (IM), and ferriferrous oxide (Fe3O4). Therein, ZIF-8 with a large specific surface area was used to efficiently load IM molecules. CP, as a photothermal agent, could soften AG and enlarge the pores in hydrogel spheres under NIRL, resulting in the release of IM. After release, Fe3O4 was beneficial to conveniently collect the remaining NDRI from water. Additionally, the AG hydrogel with a porous structure acted as a good carrier for NDRI. Importantly, NDRI possessed an outstanding controlled-release property and could be reutilized at least for four times. Consequently, this technology may provide a potential approach to control release of IM, improve utilization efficiency, and decline pesticide usage and contamination to environment.
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