恶二唑虫
介孔二氧化硅
化学
环糊精
核化学
纳米颗粒
毒性
扫描电子显微镜
生物物理学
化学工程
介孔材料
纳米技术
催化作用
杀虫剂
有机化学
材料科学
生物
工程类
复合材料
农学
作者
Liupeng Yang,Amir E. Kaziem,Yigang Lin,Chao Li,Yuting Tan,Suqing Huang,Dongmei Cheng,XU Han-hong,Zhixiang Zhang
标识
DOI:10.1016/j.carbpol.2021.118150
摘要
In this study, a pesticide controlled release system with dual response characteristics of pH and enzyme triggering was developed. Indoxacarb (IDC) was loaded into hollow mesoporous silica (HMS) nanoparticles, carboxylated β-cyclodextrin (β-CD) acted as a capping molecule to couple with the amino-functionalized HMS, and their well-defined morphological structures were confirmed by scanning electron microscopy and transmission electron microscopy. The results showed that the prepared IDC loaded HMS-CD had high loading efficiency (26.42%, w/w) and showed excellent dual response properties to pH and the α-amylase enzyme. IDC loaded HMS-CD nanoparticles showed better insecticidal activity against Spodoptera frugiperda than applying the same dose of IDC emulsifiable concentrate, and the toxicity of IDC loaded HMS-CD to zebrafish was reduced by more than 5-fold, indicating that insecticide delivery systems based on β-CD-anchored HMS nanoparticles could potentially be applied for sustainable control of pests and reduce harm to non-target organisms and the environment.
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