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Modified 2-D Materials for Removal of Pollutants from Waters and...
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Modified 2-D Materials for Removal of Pollutants from Waters and Wastewaters

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Wastewater Treatment and Reuse".

Deadline for manuscript submissions: closed (28 February 2023) | Viewed by 1998

Special Issue Editors

Dr. Ahmad Hosseini-Bandegharaei

E-Mail Website
Guest Editor
Department of Chemistry, Semnan University, Semnan, Iran
Interests: pollutant removal; degradation; adsorption; separation; water treatment
Dr. Hara Mohan Jena

E-Mail Website
Guest Editor
Department of Chemical Engineering, National Institute of Technology, Rourkela 769008, Orissa, India
Interests: pollutants removal; degradation; adsorption; separation; water treatment
Dr. Omirserik Baigenzhenov

E-Mail Website
Guest Editor
Department of Metallurgical Sciences, Satbayev University, Almaty, Kazakhstan
Interests: pollutants removal; degradation; adsorption; separation; water treatment

Special Issue Information

Dear Colleagues,

Today, an escalating increase in the contamination of water resources with toxic inorganic and organic pollutants poses serious challenges and risks to aquatic life and human health. In recent decades, many global health concerns have been declared regarding the significant toxicity of some inorganic and organic pollutants soluble in water media, as well as the lack of appropriate methods for their effective removal from ordinary treatment plants in waters and wastewaters.

To combat the crisis, researchers have introduced several technologies for the removal of toxic inorganic and organic contaminations from waters and wastewaters, including membrane separation, adsorption, photodegradation, electrochemical degradation, advanced oxidation processes, etc. A literature survey reveals that two-dimensional materials, such as graphene-based 2D materials, graphitic C3N4-based materials, transition metal oxides (TMOs), several metal organic frameworks (MOFs), some covalent organic frameworks (COFs), transition metal dichalcogenides (TMDs), layered double hydroxides (LDHs), silicate clays, MXenes, etc., are suitable for use in the aforementioned technologies.

Hence, the current Special Issue has been aimed at the utilization of modified 2D materials for the removal of toxic inorganic and organic pollutants from waters and wastewaters.

Dr. Ahmad Hosseini-Bandegharaei
Dr. Hara Mohan Jena
Dr. Omirserik Baigenzhenov
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • 2D materials
  • modification
  • inorganic and organic pollutants
  • removal
  • degradation
  • separation

Published Papers (1 paper)

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Research

13 pages, 2570 KiB  
Article
Preconcentration and Solid Phase Extraction of Trace Metal Ions by Chemically Modified Graphene Oxide Nanoconstructs
by Ali Alsalme, Hilal Ahmad, Rais Ahmad Khan, Bon Heun Koo, Ghadah M. Alharbi and Shahad I. Alhadlaq
Water 2023, 15(6), 1121; https://doi.org/10.3390/w15061121 - 15 Mar 2023
Cited by 3 | Viewed by 1638
Abstract
The toxicity of arsenic and mercury is highly dependent on their unique chemical forms, mobility, bioavailability, and biological roles. This places a strong demand on specific metal species analysis rather than total quantification. Graphene oxide (GO) is an excellent adsorbent for the extraction [...] Read more.
The toxicity of arsenic and mercury is highly dependent on their unique chemical forms, mobility, bioavailability, and biological roles. This places a strong demand on specific metal species analysis rather than total quantification. Graphene oxide (GO) is an excellent adsorbent for the extraction of metal ions; however, the functional moieties on the GO surface are not metal ion-specific. In this work, we chemically introduced thioglycolic acid to improve metal ion selectivity after the dual oxidation of graphite to generate graphene oxide (GO) nanosheets. The prepared adsorbent was characterized by various spectroscopic and microscopic techniques. A solid phase extraction method was developed after careful analysis and optimization of the prepared sorbent. The method shows a fairly good quantification limit of 0.20 µg L−1 for As(III) and Hg(II) ions. From diverse water samples, the proposed sorbent preferentially removes As(III) and Hg(II) ions (tap water and groundwater). The remarkable wettability and analyte accessibility that the surface-bonded thiol functionality of GO sheets offers is an exciting feature. In a lesser amount of time, the GO−SH nanosorbent exhibits good extraction of traces of As(III) and Hg(II). The developed method exhibits good reliability and precision in terms of accuracy and relative standard deviation (RSD 3.8%; N = 5) and has low detection limits (0.04 µg L−1). Real samples that had been spiked to a predefined level were analyzed in order to validate the established procedure. Full article
(This article belongs to the Special Issue Modified 2-D Materials for Removal of Pollutants from Waters and Wastewaters)
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