Special Issue "Nanoscale Materials for Water Purification and Catalysis"

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: 25 December 2021.

Special Issue Editors

Dr. Michael Arkas
E-Mail Website
Guest Editor
Demokritos National Centre for Scientific Research, Institute of Nanoscience and Nanotechnology, Athens, Greece
Interests: liquid crystals; catalysis; water purification; dendritic polymers; dendrimers; hyperbranched polymers; silica hydrogels-xerogels
Prof. Dr. Ioannis Pashalidis
E-Mail Website
Guest Editor
Environmental & Radioanalytical Chemistry Lab, Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
Interests: (radio)toxic inorganic species; bioactive chelating ligands; natural organic matter; metal oxides; mineral surfaces; lanthanides; actinides; humic acids; biomass by-products; pollutant monitoring on ground and sea waters; water purification; plant fibres
Special Issues and Collections in MDPI journals
Dr. Dimitrios A. Giannakoudakis
E-Mail Website
Guest Editor
Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland
Interests: physicochemical, structural, optical, and surface chemistry features of nanostructured materials; photocatalysis; mechanochemistry; ultrasound; sonophotochemistry; interfacial phenomena in catalysis; detoxification of toxic vapors; biomass valorization; selective oxidation processes; adsorptive air and water remediation; materials chemistry; MOFs and metal oxides nanocomposites; activated carbons; graphite/graphite oxide; graphitic carbon nitride polymer; semiconductor nanocatalysts; carbon quantum dots
Prof. Dr. Ioannis Anastopoulos
E-Mail Website
Guest Editor
Radioanalytical and Environmental Chemistry Group, Department of Chemistry, University of Cyprus, P. O. Box 20537, 1678 Nicosia, Cyprus
Interests: wastewater treatment; adsorption; soil pollution; heavy metals; dyes; pharmaceuticals; climate change; composting
Special Issues and Collections in MDPI journals

Special Issue Information

Dear Colleagues,

The interdisciplinary character of nanotechnology has empowered diverse scientific partnerships aiming to discover solutions to major contemporary problems. As water resources continue to be polluted, the need to conceive novel improved antipollution methods is becoming increasingly critical. In parallel, advanced nanoscale materials with far-reaching potential have been developed in order to promote the catalytic and photocatalytic degradation of pollutants as well as chemical reactions such as advanced oxidation processes (AOPs). The concept of employing nanomaterials is not new; existing in a variety of forms including nanospheres, nanomembranes, nanotubes, and nanofibers, they exhibit unique separation and catalytic properties and constitute solutions that prevail compared with their conventional counterparts. Particular emphasis has been placed on the assembly of composite systems combining organic compounds, metals, ceramics, and carbon nanomaterials. They can combine high surface areas permitting optimum adsorption and catalytical performance with high stability and recyclability. Their superior mechanical and chemical characteristics render them ideal alternatives for optimized performance efficiency, cost-effectiveness, and ease of preparation. In this Special Issue, recent trends will be introduced in a comprehensive presentation of the methods adopted for their synthesis, the broad spectrum of applications, and future developments.

The aim of this Special Issue, entitled “Nanoscale Materials for Water Purification and Catalysis”, is to present a collection of original and innovative papers (original research articles, short communications, and reviews) describing recent trends and developments in the synthesis and physicochemical characterization of nanomaterials or nanocomposites for adsorptive and/or (photo)catalytic environmental remediation applications.

Dr. Michael Arkas
Prof. Dr. Ioannis Pashalidis
Dr. Dimitrios A. Giannakoudakis
Prof. Dr. Ioannis Anastopoulos
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. Nanomaterials 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 2200 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

  • nanotubes
  • membranes
  • nanoparticles
  • nanofibers
  • nanospheres
  • photocatalysis
  • electrocatalysis
  • pollutant adsorption
  • separation
  • composite materials
  • organic–inorganic hybrid
  • ceramic materials
  • filtration
  • metal nanoparticles
  • quantum dots
  • synthesis methods
  • theoretical studies
  • water and wastewater treatment

Published Papers (1 paper)

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Research

Article
Improving the Performance of ZnS Photocatalyst in Degrading Organic Pollutants by Constructing Composites with Ag2O
Nanomaterials 2021, 11(6), 1451; https://doi.org/10.3390/nano11061451 - 30 May 2021
Viewed by 694
Abstract
ZnS is a promising photocatalyst in water purification, whereas its low photon efficiency and poor visible-light response restrict its application. Constructing composites may help solve these problems. In this work, Ag2O was introduced to ZnS for the first time based on [...] Read more.
ZnS is a promising photocatalyst in water purification, whereas its low photon efficiency and poor visible-light response restrict its application. Constructing composites may help solve these problems. In this work, Ag2O was introduced to ZnS for the first time based on their energy band characteristics to form a novel ZnS/Ag2O composite photocatalyst. In the model reaction of degrading methylene blue, the as-designed catalyst exhibited high catalytic activity among a series of ZnS-based composite photocatalysts under similar conditions. The catalytic rate constant was up to 0.138 min−1, which is 27.4- and 15.6-times higher than those of ZnS and Ag2O. This composite degraded 92.4% methylene blue in 50 min, while the ratios were 31.9% and 68.8% for ZnS and Ag2O. Catalytic mechanism study based on photoluminescence and radical-scavenging experiments revealed that the enhanced photocatalytic activity was attributed to the composite structure of ZnS/Ag2O. The structure not only facilitated the separation and transmission of photogenerated carriers but also extended the light response range of the catalyst. The as-designed ZnS/Ag2O composite is promising in degrading organic pollutants in water. Full article
(This article belongs to the Special Issue Nanoscale Materials for Water Purification and Catalysis)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Disintegration of Aqueous Pollutants Mediated by Dendritic Polymers
Authors: Michael Arkas 1,*; Ioannis Anastopoulos 2; Dimitrios A. Giannakoudakis 3; Ioannis Pashalidis 4; Theodora Katsika 1; Marilina Douloudi 1; Rafael Panagiotopoulos 1; Anna Fotopoulou 1; Eleni Nikoli 1
Affiliation: 1. Demokritos National Centre for Scientific Research, Institute of Nanoscience and Nanotechnology, Athens, Greece 2. Radioanalytical and Environmental Chemistry Group, Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia, CY-1678, Cyprus 3. Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw, Poland 4. Environmental & Radioanalytical Chemistry Lab, Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
Abstract: Radially polymerized dendritic compounds are nowadays an established polymer category next to their linear, branched and cross-linked counterparts. Their uncommon tree-like architecture is characterized by adjustable internal cavities and external groups. They are therefore exceptional absorbents and this attainment of high concentrations into their interior renders them ideal reaction media. In this framework they are applied in many environmentally benign implementations. One of the most important among them is water purification though pollutant decomposition. Simple and composite catalysts and photo-catalysts containing dendritic polymers and applied in water remediation will be discussed jointly with some unconventional solutions and future prospects.

Title: Nanoscale Cellulose & Chitin Based Functional Constructs for Water Purification
Authors: Avinash R. Pai 1; Michael Arkas 2; Sabu Thomas 1*
Affiliation: 1 International and Inter University Centre for Nanoscience and Nanotechnology, Mahatma Gandhi University, Kottayam, Kerala, India. 2 Demokritos National Centre for Scientific Research, Institute of Nanoscience and Nanotechnology, Athens, Greece.
Abstract: Polysaccharides are the most abundant carbohydrates found in nature that are widely being explored for numerous sustainable water treatment technologies such as removal of heavy metals, organic dyes, microbes, pharmaceutical and other toxic organic compounds from industrial and domestic effluents. Nanocellulose & Nanochitin showcase promising advantageous features like high degree of hydrogen bonding, mechanical strength, surface charge, ease of processability & functionalization with suitable functional groups to enhance their adsorption performance. This review highlights various functional constructs engineered or self-assembled from nanoscale cellulose and chitin moieties to from membranes, nanopapers, hydrogels, aerogels, beads & electrospun membranes for an array of waste water treatment applications. Special emphasis has been laid on tuning the adsorption capacity, selectivity & reusability of these functional constructs for commercialization and use on an industrial scale.

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