期刊
ISESCO CONFERENCE ON NANOMATERIALS AND APPLICATIONS 2012
卷 756, 期 -, 页码 127-+出版社
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/MSF.756.127
关键词
Zinc; Aluminium; molar ratio; physico-chemical properties; Zinc-Aluminium-3,4-Dichlorophenoxy; Acetate; Nanocomposite
资金
- Ministry of Higher Education (MOHE) under FRGS [600-RMI/ST/FRGS/FST(194/2010)]
Layered double hydroxide (LDH) hybrid materials of Zn-Al-layered double hydroxide-3,4-dichlorophenoxy acetate acidnanocomposites (ZADs) were prepared by direct self-assembly method. The pH of the solution was adjusted to 7.5 using 2M NaOH. Various Zn2+ to Al3+ molar ratios, R ranging from 1 to 6 were used with a fixed concentration of 3,4-D at 0.3 M. The Powder X-ray diffraction (PXRD) patterns showed the formation of well-ordered nanocomposite with the expansion of basal spacing from 8.9 angstrom in the Zinc-Aluminium-Layered Double Hydroxide (ZAL) to 18.7 - 22.1 angstrom in the resulting nanocomposites. The Fourier transform infrared (FTIR)spectra for the nanocomposites showed features for both ZAL and ZAD, showing the successful intercalation of the organic moiety into the LDH interlayer. The percentage loading of 3,4-dichlorophenoxy acetati acid(3,4-D) in LDH was found to be increased from 34.7-48.1 % (w/w), as the mole fraction of Al decreased from 0.44-0.15. This study shows that the mole fraction of zinc ion was replaced by aluminium ion in the LDH plays an important role in controlling the physic-chemical properties of the resulting material.
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