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Aminophosphonic Acid Functionalized Cellulose Nanofibers for Efficient Extraction of Trace Metal Ions

Polymers, 2020-10, Vol.12 (10), p.2370 [Peer Reviewed Journal]

2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;2020 by the authors. 2020 ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym12102370 ;PMID: 33076461

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Title:
Aminophosphonic Acid Functionalized Cellulose Nanofibers for Efficient Extraction of Trace Metal Ions
Author: Ahmad, Hilal ; Alharbi, Walaa ; BinSharfan, Ibtisam I ; Khan, Rais Ahmad ; Alsalme, Ali
Subjects: Acids ; Adsorbents ; Adsorption ; Cellulose ; Cellulose fibers ; Chemical precipitation ; Confidence intervals ; Contact angle ; Diethylene triamine ; Emission spectroscopy ; Field emission microscopy ; Field emission spectroscopy ; Flow velocity ; Gas flow ; heavy metal ions ; Heavy metals ; Inductively coupled plasma ; Industrial effluents ; Infrared spectroscopy ; Ligands ; Membrane separation ; Metal ions ; Morphology ; Nanofibers ; Optical emission spectroscopy ; Phosphonic acids ; Photoelectrons ; Plasma ; Pollutants ; Solid phases ; solid-phase extraction ; Solvents ; Spectrum analysis ; Surface chemistry ; toxicity ; Trace metals ; Water pollution ; Water sampling
Is Part Of: Polymers, 2020-10, Vol.12 (10), p.2370
Description: Cellulose nanofibers were covalently functionalized using diethylenetriamine penta (methylene phosphonic acid) and studied for the extraction of heavy metal ions. The surface-functionalized nanofibers showed a high adsorption capacity towards heavy metal ions as compared to bare nanofibers. The elemental composition and surface morphology of the prepared bio-adsorbent was characterized by X-ray photoelectron spectroscopy, attenuated total reflectance infrared spectroscopy, field emission scanning electron microscopy, and energy dispersive spectroscopy. The prepared material was studied to develop a column-based solid phase extraction method for the preconcentration of trace metal ions and their determination by inductively coupled plasma optical emission spectroscopy. The batch experimental data was well fitted to Langmuir adsorption isotherms (R > 0.99) and follows pseudo-second-order kinetics. The experimental variables such as sample pH, equilibrium time, column breakthrough, sorption flow rate, the effect of coexisting ions, and eluent type were systematically studied and optimized accordingly. The detection limit of the proposed method was found to be 0.03, 0.05, and 0.04 µg L for Cu(II), Pb(II), and Cd(II), respectively. Certified Reference Materials were analyzed to validate the proposed method against systematic and constant errors. At a 95% confidence level, the Student's t-test values were less than the critical Student's t value (4.302). The developed method was successfully employed for the preconcentration and determination of trace metal ions from real water samples such as river water and industrial effluent.
Publisher: Switzerland: MDPI AG
Language: English
Identifier: ISSN: 2073-4360
EISSN: 2073-4360
DOI: 10.3390/polym12102370
PMID: 33076461
Source: GFMER Free Medical Journals
PubMed Central
ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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Aminophosphonic Acid Functionalized Cellulose Nanofibers for Efficient Extraction of Trace Metal Ions

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