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Nanomaterials
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Nanomaterials for Environmental Protection
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Nanomaterials for Environmental Protection

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: closed (28 September 2022) | Viewed by 4725

Special Issue Editor

Dr. Mª Nieves Piña Capó

E-Mail Website
Guest Editor
Supramolecular Chemistry Group, Department of Chemistry, University of Balearic Islands, Palma de Mallorca, Balearic Islands, Spain
Interests: magnetic nanoparticles; gold nanoparticles; silver nanoparticles; supramolecular chemistry; hybrid nanoparticles; VOCs removal; PAHs removal

Special Issue Information

Dear Colleagues,

There are a high number of pollutants present in the environment with very diverse structures and chemical–physical properties, but which have in common the demonstrated capacity to cause damage to both human health and the Earth, such as volatile organic compounds (VOCs) or polycyclic aromatic hydrocarbons (PAHs), among others.

Although in most cases their presence is imperceptible, it is materially impossible to avoid them due to inherent human activity. That is why, while more sustainable and healthy alternatives are emerging, it is necessary to design and develop new adsorbents which are capable of effectively capturing and eliminating pollutants from the environment. Nanomaterials have proven to be an excellent platform upon which new captors can be built, since they have already proven useful both in the aqueous medium and in the gas phase. We predict that functionalized nanomaterials are, perhaps, the most appropriate tool for removing this great structural variety of contaminants.

This Special Issue calls for the preparation, characterization and application of new materials for the capture of pollutants in all possible scenarios, in natural or working environments. In order to be competitive, and within the paradigm of the circular economy, the design and coordination should introduce the capacity to be recycled; that is, the controlled release of the pollutant and the subsequent recovery of the collector under mild conditions.

Dr. Mª Nieves Piña Capó
Guest Editor

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. Nanomaterials 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 2900 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
  • pollutant removal
  • VOCs removal
  • PAHs removal
  • nanoparticles
  • hybrid nanoparticles

Published Papers (4 papers)

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Research

17 pages, 3114 KiB  
Article
One-Pot Environmentally Friendly Synthesis of Nanomaterials Based on Phytate-Coated Fe3O4 Nanoparticles for Efficient Removal of the Radioactive Metal Ions 90Sr, 90Y and (UO2)2+ from Water
by Paulino Duel, María de las Nieves Piña and Jeroni Morey
Nanomaterials 2022, 12(24), 4383; https://doi.org/10.3390/nano12244383 - 09 Dec 2022
Cited by 3 | Viewed by 1309
Abstract
We report the fast (three minutes) synthesis of green nanoparticles based on nanoparticles coated with the natural organic receptor phytate for the recognition and capture of 90Sr, 90Y, and (UO2)2+. The new material shows excellent retention for (UO [...] Read more.
We report the fast (three minutes) synthesis of green nanoparticles based on nanoparticles coated with the natural organic receptor phytate for the recognition and capture of 90Sr, 90Y, and (UO2)2+. The new material shows excellent retention for (UO2)2+, 97%; these values were 73% and 100% for 90Sr and 90Y, respectively. Recovery of the three radioactive metal ions occurs through a non-competitive process. The new hybrid material is harmless, easy to prepare, and immobilizes these radioactive contaminants in water with great efficiency. Full article
(This article belongs to the Special Issue Nanomaterials for Environmental Protection)
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14 pages, 3528 KiB  
Article
Facile Preparation of MCM-41/Ag2O Nanomaterials with High Iodide-Removal Efficiency
by Wenlin Yu, Qinpeng Dong, Wenbin Yu, Quan Wan and Xiuli Chen
Nanomaterials 2022, 12(20), 3678; https://doi.org/10.3390/nano12203678 - 20 Oct 2022
Cited by 2 | Viewed by 1454
Abstract
The elimination of iodide (I−) from water is a tough subject due to its low adsorption tendency and high mobility. In this work, MCM-41/Ag2O nanomaterials were prepared, characterized, and employed to adsorb I− from water. The Ag2 [...] Read more.
The elimination of iodide (I−) from water is a tough subject due to its low adsorption tendency and high mobility. In this work, MCM-41/Ag2O nanomaterials were prepared, characterized, and employed to adsorb I− from water. The Ag2O nanoparticles were dispersed homogeneously in the pores or at the surface of the MCM-41 support, and the Ag2O nanoparticles in the pores had small particles sizes due to the confinement of the mesoporous channel. The prepared MCM-41/Ag2O nanomaterials exhibited a higher specific surface area than previously reported Ag2O-based composites. The adsorption of I− by the nanomaterials was able to reach equilibrium at 180 min. The MCM-41/Ag2O nanomaterials showed a better adsorption capacity per unit mass of Ag2O than pure Ag2O nanoparticles and previously reported Ag2O-based composites prepared using other supports. Furthermore, the MCM-41/Ag2O nanomaterials exhibited high selectivity for I− in the presence of high concentrations of competitive anions, such as Cl− or Br−, and could function in a wide range of pH. The chemical reaction between Ag2O and I− and the surface adsorption were the main adsorption mechanisms. These results indicate that MCM-41/Ag2O nanomaterials are a promising and efficient adsorbent material suitable for the removal of I− for practical application. Full article
(This article belongs to the Special Issue Nanomaterials for Environmental Protection)
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14 pages, 4800 KiB  
Article
Novel Magnetically Driven Superhydrophobic Sponges Coated with Asphaltene/Kaolin Nanoparticles for Effective Oil Spill Cleanup
by Qiang Chen, Lingling Zhang, Yuanhang Shan, Yindong Liu and Dongfeng Zhao
Nanomaterials 2022, 12(19), 3527; https://doi.org/10.3390/nano12193527 - 09 Oct 2022
Cited by 2 | Viewed by 1615
Abstract
Fast and effective cleanup of oil spills remains a global challenge. A modified commercial sponge with superhydrophobicity, strong absorption capacity, outstanding magnetic response, and fire resistance were fabricated by a facile and inexpensive route of dip-coated melamine sponge carbonization. The low-cost petroleum asphaltene [...] Read more.
Fast and effective cleanup of oil spills remains a global challenge. A modified commercial sponge with superhydrophobicity, strong absorption capacity, outstanding magnetic response, and fire resistance were fabricated by a facile and inexpensive route of dip-coated melamine sponge carbonization. The low-cost petroleum asphaltene and kaolin nanoparticles were used as the dip-coating reagent. High absorption capacity of the fabricated sponges allowed rapid and continuous removal of oil contaminants. Taking advantage of the good refractory property, the sponges can be used in burning conditions and directly reused after burning out of the absorbed oil. Reusability tests showed that the modified sponges still maintained high absorption capacity (>85%) after six regeneration and reuse cycles. These characteristics make the fabricated sponge a promising aid to promote effective in situ burning cleanup of oil spills, contributing as a magnetic oil collector and a fire-resistant flexible boom. An example usage scenario of the sponges applied to in situ burning cleanup of oil spills is described. Full article
(This article belongs to the Special Issue Nanomaterials for Environmental Protection)
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10 pages, 2303 KiB  
Article
ZnO Nanorods Grown on Rhombic ZnO Microrods for Enhanced Photocatalytic Activity
by Yufu Zhu, Jiaying Yan, Lei Zhou and Liangdong Feng
Nanomaterials 2022, 12(17), 3085; https://doi.org/10.3390/nano12173085 - 05 Sep 2022
Cited by 1 | Viewed by 1533
Abstract
In this paper, the formation of rhombic ZnO microrods surrounded by ZnO nanorods was realized on the surfaces of zinc foils using a hydrothermal method. The photocatalytic degradation of Rhodamine B solution was used to test the photocatalytic performance of the prepared samples. [...] Read more.
In this paper, the formation of rhombic ZnO microrods surrounded by ZnO nanorods was realized on the surfaces of zinc foils using a hydrothermal method. The photocatalytic degradation of Rhodamine B solution was used to test the photocatalytic performance of the prepared samples. Compared with the rhombic Zn(OH)F and ZnO microrods grown on zinc foils, the hierarchical micro/nanostructures formed by ZnO nanorods surrounding the surfaces of rhombic ZnO microrods have better photocatalytic performance. The experimental results are mainly due to the fact that the hierarchical ZnO micro/nanostructures formed by ZnO nanorods surrounding the surface of the rhombic ZnO microrods have a larger surface area compared with the rhombic Zn(OH)F and ZnO microrods. More importantly, the photocatalytic circulation experiments indicate that ZnO nanorods grown on rhombic ZnO microrods can be recycled and have a relatively stable photocatalytic performance. Full article
(This article belongs to the Special Issue Nanomaterials for Environmental Protection)
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