Preparation and characterisation of novel paddy cultivation herbicide nanocomposite from zinc/aluminium layered double hydroxide and quinclorac anion. (29th July 2019)

• Record Type: Journal Article
• Authors: Sharif, Sharifah Norain Mohd; Hashim, Norhayati; Md Isa, Illyas; Ali, Noorshida Mohd; Bakar, Suriani Abu; Hussein, Mohd Zobir; Mamat, Mazidah; Bakar, Norlaili Abu; Mahamod, Wan Rusmawati Wan
• Is Part Of: Materials research innovations. Volume 23:Number 5(2019)
• Page Start: 260
• Page End: 265
• Publication Date: 2019-07-29
• Subjects: Nanocomposite -- quinclorac -- Zn/Al-layered double hydroxide -- intercalation -- co-precipitation; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1080/14328917.2018.1452586
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract: Zn/Al-layered double hydroxide-quinclorac (Zn/Al-LDH-QC) nanocomposite has been synthesised via co-precipitation method. The versatility of the Zn/Al-LDH enables this host material to be intercalated with quinclorac (QC), a type of auxin agonist herbicide that was widely used in paddy cultivation. The PXRD analysis shows that the basal spacing of the Zn/Al-LDH-QC nanocomposite expanded in the range of 15.8–16.7 Å (from 8.8 Å in Zn/Al-LDH), therefore indicating the successful intercalation of QC into the interlayer gallery of Zn/Al-LDH. The intercalation was also proven from the FTIR and elemental analysis. The thermogravimetric analysis conducted using TGA/DTG shows that the Zn/Al-LDH-QC exhibits better thermal stability compared to the pure QC herbicide. Based on the results collected from the ICP-OES, CHNS analyser, and TGA/DTG, the chemical formula of Zn/Al-LDH-QC was proposed as [Zn0.75 Al0.25 (OH)2 ][C9 H4 Cl2 NCOO] − 0.25 0.90H2 O. This study shows that the Zn/Al-LDH has potential to be used as a host material for herbicide in paddy cultivation sector.