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Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose

A desired copolymer, cellulose-graft-polyacrylonitrile was synthesized by a free radical initiating process and optimum reaction conditions were determined for maximum grafting yield (125%). The nitrile functionalities of the grafted copolymers were converted into the amidoxime ligand by oximation...

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Main Authors: Lutfor, M. R., Sarkar, Shaheen M., M. M., Yusoff, Mohd Harun, Abdullah
Format: Article
Language:English
Published: Royal Society of Chemistry 2016
Subjects:
QD Chemistry
Online Access:http://umpir.ump.edu.my/id/eprint/16826/1/fist-2016-shaheen-Efficient%20removal%20of%20transition1.pdf
http://umpir.ump.edu.my/id/eprint/16826/
http://dx.doi.org/10.1039/c5ra18502e
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spelling my.ump.umpir.168262018-02-06T06:07:11Z http://umpir.ump.edu.my/id/eprint/16826/ Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose Lutfor, M. R. Sarkar, Shaheen M. M. M., Yusoff Mohd Harun, Abdullah QD Chemistry A desired copolymer, cellulose-graft-polyacrylonitrile was synthesized by a free radical initiating process and optimum reaction conditions were determined for maximum grafting yield (125%). The nitrile functionalities of the grafted copolymers were converted into the amidoxime ligand by oximation reaction. The kenaf cellulose, cellulose grafted copolymer and poly(amidoxime) ligand were characterized by infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The pH of the solution acts as a key factor to achieve the optical detection of metal ions using complexation of this ligand with some transition metal ions. The reflectance spectra of the [M–ligand]n+ complex was found to have a highest absorbance ranging from 97 to 99.9% at pH 6. The reflectance spectra were increased by increasing Cu2+ ion concentration and a broad peak at 700 nm was observed which indicates the charge transfer (p–p transition) complex. The adsorption capacity with copper was found to be superior; 326.6 mg g�1. The adsorption capacities for other transition metal ions were also found to be strong; Fe3+, Co3+, Mn2+, Cr3+, Ni2+ and Zn2+ were 273.6, 271.6, 241.7, 228.2, 204.2 and 224.3 mg g�1, respectively at pH 6. The experimental data of all metal ions fitted significantly with the pseudo-second-order rate equation. The data proved that the transition metal ion sorption onto ligands was well fitted with the Langmuir isotherm model (R2 > 0.99), which suggest that the cellulose-based adsorbent known as poly(amidoxime) ligand surface is homogenous and monolayer. The reusability was checked by the sorption/desorption process for seven cycles and the sorption and extraction efficiency in each cycle was determined. The new type of adsorbent can be reused in many cycles without any significant loss in its original sensing and removal performances. Royal Society of Chemistry 2016 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/16826/1/fist-2016-shaheen-Efficient%20removal%20of%20transition1.pdf Lutfor, M. R. and Sarkar, Shaheen M. and M. M., Yusoff and Mohd Harun, Abdullah (2016) Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose. RSC Advances, 6 (1). pp. 745-757. ISSN 2046-2069 http://dx.doi.org/10.1039/c5ra18502e DOI: 10.1039/c5ra18502e
institution Universiti Malaysia Pahang
building UMP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang
content_source UMP Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Lutfor, M. R.
Sarkar, Shaheen M.
M. M., Yusoff
Mohd Harun, Abdullah
Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose
description A desired copolymer, cellulose-graft-polyacrylonitrile was synthesized by a free radical initiating process and optimum reaction conditions were determined for maximum grafting yield (125%). The nitrile functionalities of the grafted copolymers were converted into the amidoxime ligand by oximation reaction. The kenaf cellulose, cellulose grafted copolymer and poly(amidoxime) ligand were characterized by infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The pH of the solution acts as a key factor to achieve the optical detection of metal ions using complexation of this ligand with some transition metal ions. The reflectance spectra of the [M–ligand]n+ complex was found to have a highest absorbance ranging from 97 to 99.9% at pH 6. The reflectance spectra were increased by increasing Cu2+ ion concentration and a broad peak at 700 nm was observed which indicates the charge transfer (p–p transition) complex. The adsorption capacity with copper was found to be superior; 326.6 mg g�1. The adsorption capacities for other transition metal ions were also found to be strong; Fe3+, Co3+, Mn2+, Cr3+, Ni2+ and Zn2+ were 273.6, 271.6, 241.7, 228.2, 204.2 and 224.3 mg g�1, respectively at pH 6. The experimental data of all metal ions fitted significantly with the pseudo-second-order rate equation. The data proved that the transition metal ion sorption onto ligands was well fitted with the Langmuir isotherm model (R2 > 0.99), which suggest that the cellulose-based adsorbent known as poly(amidoxime) ligand surface is homogenous and monolayer. The reusability was checked by the sorption/desorption process for seven cycles and the sorption and extraction efficiency in each cycle was determined. The new type of adsorbent can be reused in many cycles without any significant loss in its original sensing and removal performances.
format Article
author Lutfor, M. R.
Sarkar, Shaheen M.
M. M., Yusoff
Mohd Harun, Abdullah
author_facet Lutfor, M. R.
Sarkar, Shaheen M.
M. M., Yusoff
Mohd Harun, Abdullah
author_sort Lutfor, M. R.
title Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose
title_short Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose
title_full Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose
title_fullStr Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose
title_full_unstemmed Efficient Removal of Transition Metal Ions using Poly(amidoxime) Ligand from Polymer Grafted Kenaf Cellulose
title_sort efficient removal of transition metal ions using poly(amidoxime) ligand from polymer grafted kenaf cellulose
publisher Royal Society of Chemistry
publishDate 2016
url http://umpir.ump.edu.my/id/eprint/16826/1/fist-2016-shaheen-Efficient%20removal%20of%20transition1.pdf
http://umpir.ump.edu.my/id/eprint/16826/
http://dx.doi.org/10.1039/c5ra18502e
_version_ 1643668021627060224
score 13.222552

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