The development of novel intelligent pesticide formulations for enhanced foliage deposition and efficient utilization remains a challenge. Accropode stones are general employed to attenuate the impact of waves. Herein, we constructed novel accropode-like carriers based on zeolitic imidazolate framework-8 (ZIF-8) and silica (SiO₂) for pesticide delivery with enhanced foliar affinity. Firstly, β-cyclodextrin-doped ZIF-8 (β-CD/ZIF-8) carrier was prepared by a one-pot method. Subsequently, a selective occupation strategy was applied to achieve facet-specific growth of mesoporous SiO₂ on β-CD/ZIF-8 (β-CD/ZIF-8@S). The β-CD/ZIF-8@S nanocarriers exhibited regular structure with sixteen facets. The accropode-like structure would achieve effective foliage retention and resistance to rainwater washout by the reduction of carrier bouncing and rolling on foliage. The β-CD/ZIF-8@S presented a high loading efficacy for imidacloprid (IMI) (24.43 %) and good biocompatibility. After loading IMI, tannic acid (TA) was utilized to block the loaded pesticide (IMI@β-CD/ZIF-8@ST). The IMI@β-CD/ZIF-8@ST exhibited dual responsive release behavior and could be effectively transported in both directions in various parts of tobacco plants. The photostability of IMI@β-CD/ZIF-8@ST was 5-times that of IMI solution. Moreover, the insecticidal efficacy against Plutella xylostella of IMI@β-CD/ZIF-8@ST was 80 % after 120 h of UV irradiation, while that of IMI and IMI water dispersible granule was only 23.33 % and 26.67 %, respectively. This work provides new insights into enhancing the foliage retention and efficiency utilization of pesticide.

开发新型智能农药制剂以增强叶面沉积和有效利用仍然是一个挑战。节肢石通常用于减弱波浪的影响。在此，我们构建了基于沸石咪唑酯骨架-8 (ZIF-8) 和二氧化硅 (SiO ₂ )的新型节肢动物载体，用于增强叶面亲和力的农药递送。首先，采用一锅法制备了β-环糊精掺杂的ZIF-8（β-CD/ZIF-8）载体。随后，应用选择性占据策略以实现介孔SiO ₂在β-CD/ZIF-8（β-CD/ZIF-8@S）上的面特异性生长。 β-CD/ZIF-8@S纳米载体表现出具有十六个面的规则结构。这种类似节肢动物的结构可以通过减少载体在叶子上的弹跳和滚动来实现有效的叶子保持和抵抗雨水冲刷的能力。 β-CD/ZIF-8@S 对吡虫啉 (IMI) 具有较高的负载效率 (24.43 %) 和良好的生物相容性。加载IMI后，利用单宁酸（TA）来封闭加载的农药（IMI@β-CD/ZIF-8@ST）。 IMI@β-CD/ZIF-8@ST表现出双重响应释放行为，并且可以在烟草植物的各个部分中有效地双向运输。 IMI@β-CD/ZIF-8@ST的光稳定性是IMI溶液的5倍。此外，紫外线照射120 h后，IMI@β-CD/ZIF-8@ST对小菜蛾的杀虫效力为80%，而IMI和IMI水分散粒剂的杀虫效力分别仅为23.33%和26.67%。这项工作为提高农药的叶子保留和效率利用提供了新的见解。