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Synthesis, characterization and controlled release properties of zinc–aluminium-beta-naphthoxyacetate nanocomposite


Citation

Jubri, Zaemah and Mohd Yusoff, Nor Zalina Anua and Sarijo, Siti Halimah and Marsom, Elya Sufliza and Hussein, Mohd Zobir (2017) Synthesis, characterization and controlled release properties of zinc–aluminium-beta-naphthoxyacetate nanocomposite. Journal of Porous Materials, 24 (3). 573 - 582. ISSN 1380-2224

Abstract

An organic–inorganic nanohybrid nanocomposite was synthesized by co-precipitation method using beta-naphthoxyacetate (BNOA) as guest anion and zinc–aluminium layered double hydroxide (Zn–Al-LDH) as the inorganic host. A well-ordered nanohybrid nanocomposite was formed when the concentration of BNOA was 0.08 M and the molar ratio of Zn to Al, R = 2. Basal spacing of layered double hydroxide containing nitrate ions expanded from 8.9 to 19.5 Å in resulting of Zn–Al-BNOA nanocomposite was obtained indicates that beta-naphthoxyacetate was successfully intercalated into interlayer spaces of layered double hydroxide. It was also found out the BET surface area increased from 1.13 to 42.79 m2 g−1 for Zn–Al-LDH and Zn–Al-BNOA nanocomposite, respectively. The BJH average pore diameter of the synthesized nanocomposite is 199 Å which shows mesoporous-type of material. CHNS analysis shows the Zn–Al-BNOA nanocomposite material contains 36.2 % (w/w) of BNOA calculated based on the percentage of carbon in the sample. Release of BNOA from the lamella of Zn–Al-BNOA was controlled by the zeroth and first order kinetics at the beginning of the deintercalation process up to 200 min and controlled by pseudo-second order kinetics for the whole process. This study suggests that layered double hydroxide can be used as a carrier for organic acid herbicide controlled release formulation of BNOA.


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Additional Metadata

Item Type: Article
Divisions: Institute of Advanced Technology
DOI Number: https://doi.org/10.1007/s10934-016-0293-x
Publisher: Springer Link
Keywords: Layered double hydroxide; Beta-naphthoxyacetate; Hydrotalcite; Herbicide; Nanocomposite
Depositing User: Mohd Hafiz Che Mahasan
Date Deposited: 16 Oct 2018 09:27
Last Modified: 16 Oct 2018 09:27
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s10934-016-0293-x
URI: http://psasir.upm.edu.my/id/eprint/63370
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