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Surfactant-assisted imidacloprid intercalation of layered zinc hydroxide nitrate: synthesis, characterisation and controlled release formulation
Journal of Porous Materials ( IF 2.6 ) Pub Date : 2019-11-21 , DOI: 10.1007/s10934-019-00830-x
Sharifah Norain Mohd Sharif , Norhayati Hashim , Illyas Md Isa , Suriani Abu Bakar , Mohamad Idris Saidin , Mohamad Syahrizal Ahmad , Mazidah Mamat , Mohd Zobir Hussein

A neutrally charged insecticide, imidacloprid (IC), has been intercalated into zinc hydroxide nitrate (ZHN) with the assistance of sodium dodecylsulphate (SDS). The presence of SDS assists the intercalation of IC by forming a hydrophobic region in the interlayer gallery of ZHN. The intercalated compound, ZHN–SDS–IC, was characterised using powder X-ray diffraction (PXRD), thermogravimetric analysis, Fourier transform infrared spectroscopy, elemental analysis, field emission scanning electron microscopy, and gas sorption analysis. The PXRD studies demonstrated intercalation peaks at lower 2θ, which confirmed the intercalation of IC and SDS in the interlayer gallery of ZHN. The release and kinetic studies of ZHN–SDS–IC reveals that the IC were successfully released in controlled manner (with release time up to 1478 min), and were governed by pseudo second order kinetic model. The ZHN–SDS–IC synthesised is hopefully beneficial in overcoming the consequences of excessive usage of insecticide in paddy cultivation.



中文翻译:

表面活性剂辅助的吡虫啉层状硝酸硝酸铵插层:合成,表征和控释制剂

在十二烷基硫酸钠(SDS)的辅助下,将一种中性电荷的杀虫剂吡虫啉(IC)插入到硝酸氢氧化锌(ZHN)中。SDS的存在通过在ZHN的层间通道中形成疏水区域来协助IC的插入。使用粉末X射线衍射(PXRD),热重分析,傅里叶变换红外光谱,元素分析,场发射扫描电子显微镜和气体吸附分析对插入的化合物ZHN–SDS–IC进行了表征。PXRD研究表明,在较低的2θ处有嵌入峰,这证实了ZHN夹层通道中IC和SDS的嵌入。ZHN–SDS–IC的释放和动力学研究表明,该IC以受控方式成功释放(释放时间长达1478分钟),并由伪二阶动力学模型控制。合成的ZHN–SDS–IC有望克服水稻种植中过量使用杀虫剂的后果。

更新日期:2020-04-21
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