eprintid: 10929
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/09/29
datestamp: 2023-11-09 16:37:32
lastmod: 2023-11-09 16:37:32
status_changed: 2023-11-09 16:32:32
type: article
metadata_visibility: show
creators_name: Nasir, A.M.
creators_name: Md Nordin, N.A.H.
creators_name: Goh, P.S.
creators_name: Ismail, A.F.
title: Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism
ispublished: pub
keywords: Adsorption; Adsorption isotherms; C (programming language); Crystalline materials; Kinetics; Network function virtualization; Organometallics; Scanning electron microscopy; Solutions; Spectrometers; X ray diffraction, Adsorption kinetics; Arsenite; Field emission scanning electron microscopes; Metal organic framework; Pseudo-second-order kinetic models; Scanning electronic microscopes; X-ray energy dispersive spectrometers; Zeolitic imidazolate frameworks, Thermogravimetric analysis
note: cited By 89
abstract: Two-dimensional leaf-shaped zeolitic imidazolate framework (ZIF-L) was synthesized in aqueous solution by using zinc salt and 2-methylimidazole (2-MeIM) at room temperature. The synthesized ZIF-L shows unique two-dimensional (2-D) leaf-like crystal morphology using field emission scanning electron microscope. The crystalline structure and total surface area of ZIF-L was indicated by X-ray diffraction, thermogravimetric analysis and Brunauer�Emmett�Teller analysis. The experimental data of adsorption of arsenite by ZIF-L were well fitted by two-site- pseudo-second-order kinetic model. The adsorption isotherms were well described by Freundlich isotherm model. The synthesized ZIF-L possess maximum uptake of arsenite was 43.74 mg/g at pH 10.0 at the room temperature (25.0 ± 1 °C) which is relatively higher than other class of metal-organic framework. Zeta potential, fourier transform infrared, and scanning electronic microscope combined with X-ray energy dispersive spectrometer concluded that adsorption mechanism of arsenite on ZIF-L was occurred based on electrostatic interaction between arsenite ions and surface charge of ZIF-L, also substitution of hydroxyl group by arsenite to form inner-sphere complex. Since the development of ZIF-L through aqueous media was rapid, simple and eliminated the heating process, ZIF-L can be regarded as a promising adsorbent and low-cost adsorbent for the removal of arsenite. © 2017 Elsevier B.V.
date: 2018
publisher: Elsevier B.V.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85037544448&doi=10.1016%2fj.molliq.2017.12.005&partnerID=40&md5=9fa1319e76eb774ab87802f9328fe8bb
id_number: 10.1016/j.molliq.2017.12.005
full_text_status: none
publication: Journal of Molecular Liquids
volume: 250
pagerange: 269-277
refereed: TRUE
issn: 01677322
citation:   Nasir, A.M. and Md Nordin, N.A.H. and Goh, P.S. and Ismail, A.F.  (2018) Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism.  Journal of Molecular Liquids, 250.  pp. 269-277.  ISSN 01677322