Special Issue "Advanced Research on the Removal of Pollutants by Nanomaterials"

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Engineering, Remediation and Restoration".

Deadline for manuscript submissions: 15 January 2022.

Special Issue Editors

Prof. Dr. Jongho Jeon
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Guest Editor
Department of Applied Chemistry, College of Engineering, Kyungpook National University, Daegu, Korea
Interests: functional hybrid materials; remediation; radioactive wastes; radiochemistry; radioisotope applications
Prof. Dr. Yongjun Choi
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Guest Editor
School of Environmental Engineering, University of Seoul, Seoul 02504, Korea
Interests: bioremediation; nanocomposite; microplastics; heavy metals; radioactive waste

Special Issue Information

Dear Colleagues,

With the rapid development of industries and the growth of manufacturing, the coinciding increase in toxic pollution as a threat to the environment and public health has prompted considerable attention in recent years. Nanoscale science and engineering provide important tools in the decontamination of organic, inorganic, and mixed pollutants. Indeed, various functional nanomaterials show great promise as one of the most effective methods to treat contaminants, due to their unique properties such as high surface area, high adsorption capacity, and specific affinity to the target substances. In recent decades, finely designed materials including nanoadsorbents, nanocomposites, nanocatalysts, and nanomembranes have been investigated for remediation purposes.

The Special Issue on “Advanced Research on the Removal of Pollutants by Nanomaterials” invites high-quality research articles and review papers focusing on the latest approaches based on nano-/micro-sized materials and novel nanotechnology for the efficient treatment of emerging pollutants such as particulate matter, pharmaceuticals, and microplastics.

Prof. Dr. Jongho Jeon
Prof. Dr. Yongjun Choi
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 papers will be 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. Toxics is an international peer-reviewed open access monthly 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 1600 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

  • nanomaterials
  • decontamination
  • desalination
  • water treatment
  • purification process
  • bioremediation
  • fine particulates
  • heavy metals
  • radioactive wastes
  • organic pollutant

Published Papers (3 papers)

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Research

Article
Synthesis of Silver-Impregnated Magnetite Mesoporous Silica Composites for Removing Iodide in Aqueous Solution
Toxics 2021, 9(8), 175; https://doi.org/10.3390/toxics9080175 - 26 Jul 2021
Viewed by 434
Abstract
[email protected] composite has a high sorption ability for I in aqueous solution due to its high surface area and strong affinity for the studied anion. The material adsorbed I rapidly during the initial contact time (in 45 min, η = 80%) [...] Read more.
[email protected] composite has a high sorption ability for I in aqueous solution due to its high surface area and strong affinity for the studied anion. The material adsorbed I rapidly during the initial contact time (in 45 min, η = 80%) and reached adsorption equilibrium after 2 h. Moreover, [email protected] proved to selectively remove I from a mixture of Cl, NO3 and I. The adsorption behavior fitted the Langmuir isotherm perfectly and the pseudo-second-order kinetic model. Based on the Langmuir isotherm, the maximum adsorption capacity of [email protected] was 0.82 mmol/g, which is significantly higher than previously developed adsorbents. This study introduces a practical application of a high-capacity adsorbent in removing radioactive I from wastewaters. Full article
(This article belongs to the Special Issue Advanced Research on the Removal of Pollutants by Nanomaterials)
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Article
Bioengineered Matricaria recutita Extract-Assisted Palladium Nanoparticles for the Congo Red Dye Degradation and Catalytic Reduction of 4-Nitrophenol to 4-Aminophenol
Toxics 2021, 9(5), 103; https://doi.org/10.3390/toxics9050103 - 04 May 2021
Viewed by 624
Abstract
The green chemistry method is the preferred approach for synthesizing metal and metal oxide nanoparticles because of its low toxicity, environmental friendliness, feasibility, and safety to human health compared with other chemical or physical methods. The present work reports the phytogenic synthesis of [...] Read more.
The green chemistry method is the preferred approach for synthesizing metal and metal oxide nanoparticles because of its low toxicity, environmental friendliness, feasibility, and safety to human health compared with other chemical or physical methods. The present work reports the phytogenic synthesis of palladium nanoparticles (PdNPs) using an aqueous extract of Matricaria recutita (Chamomile). The phytochemical-mediated synthesis of PdNPs is an economical and eco-friendly approach without using toxic elements as reducing and capping or stabilizing agents. The UV-visible spectroscopic characterization was initially used to confirm the preparation of PdNPs using an aqueous extract of M. recutita flowers as a bioreductant for the reduction of Pd2+ to Pd0 without using any extra capping and reducing agents. The appearance of surface plasmon resonance (SPR) peak at 286 nm confirmed the formation of M. recutita extract-based PdNPs. Furthermore, the PdNPs were characterized by TEM, SEM, EDX, XRD, XPS, and FTIR to confirm their proper synthesis. The thermogravimetric analysis (TGA) was implemented to interpret the decomposition pattern and thermal stability of as-synthesized PdNPs. The biosynthesized PdNPs were further applied as a nanocatalyst in degradation of an azo dye Congo red (CR) in the presence of NaBH4. The catalytic reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) was also investigated in the presence of NaBH4. All the catalytic reactions were performed in water, and no significant loss in catalytic activity was observed after recovery and reusability of the biosynthesized PdNPs. Full article
(This article belongs to the Special Issue Advanced Research on the Removal of Pollutants by Nanomaterials)
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Article
Synthesis of Fe Doped Poly p-Phenylenediamine Composite: Co-Adsorption Application on Toxic Metal Ions (F and As3+) and Microbial Disinfection in Aqueous Solution
Toxics 2021, 9(4), 74; https://doi.org/10.3390/toxics9040074 - 01 Apr 2021
Viewed by 505
Abstract
Water is regarded as an important natural resource to sustain life, and its purification is an important criterion that determines its quality and usefulness. In this study, the incorporation of Fe3+ oxide onto a phenylenediamine (pPD) polymer matrix through chemical co-polymerization was [...] Read more.
Water is regarded as an important natural resource to sustain life, and its purification is an important criterion that determines its quality and usefulness. In this study, the incorporation of Fe3+ oxide onto a phenylenediamine (pPD) polymer matrix through chemical co-polymerization was prepared, and its arsenite and fluoride removal potentials at optimal conditions from aqueous solution were evaluated. The morphology and structural analysis of the synthesized Fe-doped pPD (Fe-pPD) were comparatively evaluated using the FT-IR, SEM, EDS, and XRD techniques. Fe was successfully incorporated onto pPD matrix as confirmed by different morphological characterizations. The rate of adsorption of F and As3+ onto the Fe-pPD composite best followed the pseudo-second-order kinetic model. The experimental data for both As3+ and F onto the Fe-pPD composite better fit the Freundlich isotherm model at different operating temperatures. Overall, the synthesized composite exhibited a strong affinity towards fluoride uptake (96.6%) than arsenite uptake (71.14%) with a maximum capacity of 6.79 (F) and 1.86 (As3+) mg/g. Additionally, the synthesized adsorbent showed some level of antimicrobial activity against common water-borne bacterial. Therefore, the Fe-doped pPD composite has the potential ability for inorganic metal species pollutants remediation and bacterial disinfection in community-level water purification processes. Full article
(This article belongs to the Special Issue Advanced Research on the Removal of Pollutants by Nanomaterials)
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