Advances in preparation of metal-organic frameworks-based nanocarrier for sustained and controlled release of pesticides

Traditional pesticide formulations such as emulsifiable oil and wettable powder have the disadvantages of high toxicity, low biological activity, short duration, and low utilization rate. In recent years, nanotechnology has been widely used in the field of agriculture and nano-pesticides based on metal-organic frameworks (MOFs) have the characteristics of small particle size, large specific surface area, strong adhesion, targeted transport and controlled release, which provides a new solution for realizing precise application, long duration and high utilization rate of pesticides. In this review, the hydrothermal/solvothermal, one-pot, and sol-gel methods for preparing MOFs nanocarriers are introduced, and the functional modification strategies of MOFs nanocarriers, including adjustment, post-synthesis, and complex modification are summarized. The sustained and controlled release applications of MOFs nanocomposites in fungicides, insecticides, and plant growth regulators are highlighted. Finally, the problems and development trends of pesticide nano-carriers based on MOFs are prospected to guide subsequent related research.