The Intercalation Behaviour and Physico-Chemical Characterisation of Novel Intercalated Nanocomposite from Zinc/Aluminium Layered Double Hydroxides and Broadleaf Herbicide Clopyralid

Chemistry and Chemical Technology Pub Date : 2020-02-20 DOI:10.23939/chcht14.01.038

S. Sharif, N. Hashim, I. Isa, M. Mamat, N. M. Ali, S. A. Bakar, M. Hussein, S. Mustafar, Materials Synthesis

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引用次数: 4

Abstract

This study reports on the preparation of novel zinc/aluminium layered double hydroxide intercalated clopyralid (Zn/Al-LDH-CP) nanocomposites fabricated via co-precipitation. An expansion of the interlayer gallery of Zn/Al-LDH for the accommodation of clopyralid was observed from the powder X-ray diffraction (PXRD) pattern, confirming the occurrence of intercalation. The results from Fourier transform infrared and elemental analysis were consistent with those from PXRD, thus supporting the intercalation of clopyralid. The thermal studies showed that the nanocomposite had better thermal stability compared to pristine clopyralid. Based on these data, the chemical formula of the nanocomposite was proposed as [Zn0.75Al0.25(OH)2][C5H2Cl2NCOO]0.250.67H2O, and the percentage loading of clopyralid in the interlayer gallery of Zn/Al-LDH was calculated to be 25.39 %. These characterisation results indicate a very promising future for this novel Zn/Al-LDH-CP nanocomposite.

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锌/铝层状双氢氧化物与宽叶除草剂氯吡酯新型插层纳米复合材料的插层行为及物理化学表征

本文报道了用共沉淀法制备新型锌/铝层状双氢氧化物插层氯吡啶(Zn/Al-LDH-CP)纳米复合材料。在粉末x射线衍射(PXRD)图上观察到Zn/Al-LDH的层间廊扩大以容纳氯吡啉，证实了插层的发生。傅里叶变换红外和元素分析结果与PXRD分析结果一致，支持氯吡苷的插层。热稳定性研究表明，该纳米复合材料比原始的氯吡酯具有更好的热稳定性。在此基础上，提出了纳米复合材料的化学式为[Zn0.75Al0.25(OH)2][C5H2Cl2NCOO]0.250.67H2O，并计算出了在Zn/Al-LDH层间廊道中氯丙苷的负载量为25.39%。这些表征结果表明，这种新型的Zn/Al-LDH-CP纳米复合材料具有很好的前景。

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Chemistry and Chemical Technology

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