生物矿化
微球
碳酸钙
杀虫剂
多孔性
钙
化学工程
碳酸盐
化学
环境化学
控制释放
环境科学
纳米技术
材料科学
生态学
有机化学
工程类
生物
作者
Yaoxun Zeng,Xinghua Li,Fangzheng Chen,Huiling Ye,Keyi Rong,Zhi Hua Ran,Binhong Liu,Zhenxing Pan,Xiaofeng Xie,Juan Tang,Xujie Liu,Ya‐Ling He
标识
DOI:10.1016/j.jece.2024.112572
摘要
Low bioavailability and environmental pollution are the key problems that restrict the sustainable development of traditional herbicides and pesticides. In this study, inspired by biomineralization, we prepared porous calcium carbonate microspheres (PCMs) using polyvinylpyrrolidone (PVP) and carboxymethyl chitosan (CMCs) as particle size and morphology modifiers. PCMs have large specific surface area (87.6 m2/g) and mesoporous structure, which allows them to efficiently load herbicides (497±24 mg/g) and pesticides (318±17 mg/g). Additionally, the PCMs exhibit pH-responsive decomposition, enabling responsive release of glyphosate/chlorpyrifos in weak acid environments. In the simulation experiments, we found that the PCMs improved the adhesion ability of glyphosate/chlorpyrifos on the leaf surface and reduced the glyphosate/chlorpyrifos loss rate (1.69-fold reduction for glyphosate; 1.68-fold reduction for chlorpyrifos). Furthermore, glyphosate/chlorpyrifos loaded PCMs (GLY@PCMs/CPF@PCMS) exhibited herbicidal/insecticidal performance with the same efficacy as glyphosate/chlorpyrifos. Therefore, the PCMs provide an effective method for controlling herbicides/pesticides loss, controlled release of herbicides/pesticides, and improving herbicides/pesticides utilization efficiency. As a result, PCMs have the potential to be used as a pesticide/herbicide controlled release system, providing new ideas and theoretical support for the design of multifunctional nanoherbicides/nanopesticides in the future.
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