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Nanotechnology for Environmental Remediation
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Nanotechnology for Environmental Remediation

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: closed (20 May 2022) | Viewed by 7212

Special Issue Editors

Dr. Antonino Cataldo

E-Mail Website
Guest Editor
1. Dipartimento di Ingegneria dell’Informazione, Università politecnica delle Marche, Via Brecce Bianche, 1, 60131 Ancona AN, Italy
2. Istituto Nazionale di Fisica Nucleare- Laboratori Nazionali di Frascati, Via Enrico Fermi, 40, I-00044 Frascati RM, Italy
Interests: material science; nanotechnology; graphene; carbon nanostructures; nanocomposites; physical chemistry
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Antonio Maffucci

E-Mail Website
Guest Editor
1. Department of Electrical and Information Engineering, University of Cassino and Southern Lazio, 03043 Cassino, Italy
2. National Institute for Nuclear Physics (INFN), 00186 Roma, Italy
Interests: electromagnetic modeling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Environmental pollution is growing at an exponential rate, leading to an urgent need to design devices that can help to monitor and remediate the health of the Earth. Meeting just one of these requirements is not enough to solve the problem of pollution: It is essential to both know the type and concentration of pollutants and to be able to remove them in order to appropriately treat the specimen to be remediated. It is in this context that devices based on nanomaterials come into play, as they can assist us in solving this huge and urgent problem.

The scope of this forthcoming Special Issue will focus on recent innovative and pioneering works in the field of nanotechnology for environmental remediation. Topics include but are not limited to:

  • Adsorbent nanomaterials;
  • Pollutant detection methods (spectroscopic, electrochemical, etc..);
  • Chemisorption and physisorption modeling;
  • Modeling, simulation and characterization;
  • Functional nanodevices;
  • Sensing and signal processing.

Dr. Antonino Cataldo
Prof. Dr. Antonio Maffucci
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. Materials 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

  • nanomaterials
  • environmental remediation
  • diagnostic of pollutants
  • electrochemistry
  • spectroscopic method of analysis
  • advanced nanodevices
  • environmental monitoring

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Published Papers (3 papers)

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Research

12 pages, 5101 KiB  
Article
Systematic Study of Effective Hydrothermal Synthesis to Fabricate Nb-Incorporated TiO2 for Oxygen Reduction Reaction
by So Yoon Lee, Daiki Numata, Ai Serizawa, Koudai Sasaki, Kaito Fukushima, Xiulan Hu and Takahiro Ishizaki
Materials 2022, 15(5), 1633; https://doi.org/10.3390/ma15051633 - 22 Feb 2022
Cited by 2 | Viewed by 1902
Abstract
Fuel cells are expected to serve as next-generation energy conversion devices owing to their high energy density, high power, and long life performance. The oxygen reduction reaction (ORR) is important for determining the performance of fuel cells; therefore, using catalysts to promote the [...] Read more.
Fuel cells are expected to serve as next-generation energy conversion devices owing to their high energy density, high power, and long life performance. The oxygen reduction reaction (ORR) is important for determining the performance of fuel cells; therefore, using catalysts to promote the ORR is essential for realizing the practical applications of fuel cells. Herein, we propose Nb-incorporated TiO2 as a suitable alternative to conventional Pt-based catalysts, because Nb doping has been reported to improve the conductivity and electron transfer number of TiO2. In addition, Nb-incorporated TiO2 can induce the electrocatalytic activity for the ORR. In this paper, we report the synthesis method for Nb-incorporated TiO2 through a hydrothermal process with and without additional load pressures. The electrocatalytic activity of the synthesized samples for the ORR was also demonstrated. In this process, the samples obtained under various load pressures exceeding the saturated vapor pressure featured a high content of Nb and crystalline TiNb2O7, resulting in an ellipsoidal morphology. X-ray diffraction results also revealed that, on increasing the Nb doping amounts, the diffraction peak of the anatase TiO2 shifted to a lower angle and the full width at half maximum decreased. This implies that the Ti atom is exchanged with the Nb atom during this process, resulting in a decrease in TiO2 crystallinity. At a doping level of 10%, Nb-incorporated TiO2 exhibited the best electrocatalytic activity in terms of the oxygen reduction current (iORR) and onset potential for the ORR (EORR); this suggests that 10% Nb-doped samples have the potential for enhancing electrocatalytic activity. Full article
(This article belongs to the Special Issue Nanotechnology for Environmental Remediation)
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15 pages, 5750 KiB  
Article
Magnetic Field-Assisted Photocatalytic Degradation of Organic Pollutants over Bi1−xRxFeO3 (R = Ce, Tb; x = 0.00, 0.05, 0.10 and 0.15) Nanostructures
by Radhalayam Dhanalakshmi, Nambi Venkatesan Giridharan and Juliano C. Denardin
Materials 2021, 14(15), 4079; https://doi.org/10.3390/ma14154079 - 22 Jul 2021
Cited by 8 | Viewed by 2073
Abstract
Magnetic-field-accelerated photocatalytic degradation of the phenol red (PR) as a model organic pollutant was studied using rare-earth elements modified BiFeO3 (Bi1−xRxFeO3 (R = Ce, Tb; x = 0.0, 0.05, 0.10 and 0.15); BFO: RE) nanostructures. The [...] Read more.
Magnetic-field-accelerated photocatalytic degradation of the phenol red (PR) as a model organic pollutant was studied using rare-earth elements modified BiFeO3 (Bi1−xRxFeO3 (R = Ce, Tb; x = 0.0, 0.05, 0.10 and 0.15); BFO: RE) nanostructures. The nanostructures were prepared via the hydrothermal process and their morphological, structural, functional, optical and magnetic features were investigated in detail. The effect of magnetic fields (MFs) on photocatalysis were examined by applying the different MFs under visible light irradiation. The enhanced photodegradation efficiencies were achieved by increasing the MF up to 0.5T and reduced at 0.7T for the compositions x = 0.10 in both Ce and Tb substituted BFO. Further, mineralization efficiencies of PR, reproducibility of MF-assisted photocatalysis, stability and recyclability of BFO: RE nanostructures were also tested. Full article
(This article belongs to the Special Issue Nanotechnology for Environmental Remediation)
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10 pages, 1376 KiB  
Article
Nano Zero Valent Iron (nZVI) as an Amendment for Phytostabilization of Highly Multi-PTE Contaminated Soil
by Maja Radziemska, Zygmunt M. Gusiatin, Jiri Holatko, Tereza Hammerschmiedt, Andrzej Głuchowski, Andrzej Mizerski, Iwona Jaskulska, Tivadar Baltazar, Antonin Kintl, Dariusz Jaskulski and Martin Brtnicky
Materials 2021, 14(10), 2559; https://doi.org/10.3390/ma14102559 - 14 May 2021
Cited by 12 | Viewed by 2215
Abstract
In recent years, a lot of attention has been given to searching for new additives which will effectively facilitate the process of immobilizing contaminants in the soil. This work considers the role of the enhanced nano zero valent iron (nZVI) strategy in the [...] Read more.
In recent years, a lot of attention has been given to searching for new additives which will effectively facilitate the process of immobilizing contaminants in the soil. This work considers the role of the enhanced nano zero valent iron (nZVI) strategy in the phytostabilization of soil contaminated with potentially toxic elements (PTEs). The experiment was carried out on soil that was highly contaminated with PTEs derived from areas in which metal waste had been stored for many years. The plants used comprised a mixture of grasses—Lolium perenne L. and Festuca rubra L. To determine the effect of the nZVI on the content of PTEs in soil and plants, the samples were analyzed using flame atomic absorption spectrometry (FAAS). The addition of nZVI significantly increased average plant biomass (38%), the contents of Cu (above 2-fold), Ni (44%), Cd (29%), Pb (68%), Zn (44%), and Cr (above 2-fold) in the roots as well as the soil pH. The addition of nZVI, on the other hand, was most effective in reducing the Zn content of soil when compared to the control series. Based on the investigations conducted, the application of nZVI to soil highly contaminated with PTEs is potentially beneficial for the restoration of polluted lands. Full article
(This article belongs to the Special Issue Nanotechnology for Environmental Remediation)
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