@article{scholars10929, year = {2018}, journal = {Journal of Molecular Liquids}, publisher = {Elsevier B.V.}, pages = {269--277}, note = {cited By 89}, volume = {250}, doi = {10.1016/j.molliq.2017.12.005}, title = {Application of two-dimensional leaf-shaped zeolitic imidazolate framework (2D ZIF-L) as arsenite adsorbent: Kinetic, isotherm and mechanism}, 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{\^a}??Emmett{\^a}??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 {\^A}{$\pm$} 1 {\^A}oC) 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. {\^A}{\copyright} 2017 Elsevier B.V.}, 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}, 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}, issn = {01677322}, author = {Nasir, A. M. and Md Nordin, N. A. H. and Goh, P. S. and Ismail, A. F.} }