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Advances in Engineered Nanostructures for Detection, Control and Removal of Environmental Pollutants

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

Deadline for manuscript submissions: 20 November 2024 | Viewed by 4018

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Special Issue Editors

Dr. Gabriela Carja

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Guest Editor

Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protect ion Technical University “Gh.Asachi” of Iasi, Bd. D. Mangeron, Iasi 700554, Romania
Interests: porous nanostructured materials; nanostructured assemblies; non-toxic nanostructures used in water and air depollution processes
Special Issues, Collections and Topics in MDPI journals

Dr. Elena M. Seftel

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Guest Editor

Department of Sustainable Materials, VITO Flemish Institute for Technological Research, Boeretang 200, 2400 Mol, Belgium
Interests: nanomaterials; layered double hydroxides; nano-metal oxides; semiconductors; synthesis; characterization; shaping of nanomaterials (microspheres, coatings, 3D printing); heterogeneous catalysis and adsorption processes; environmental decontamination; waste (CRM) recovery; photocatalysis

Special Issue Information

Dear Colleagues,

Increasing environmental pollution worldwide has led to a tremendous boost in the advancement of environmental nanotechnology by exploring advanced engineered nanostructures to improve the removal of various pollutants. In this context, this Special Issue welcomes original articles and reviews describing the latest progress in fabricating novel nanostructured materials with enhanced capabilities to control, detect, and remove pollutants from the environment.

Topics of interest include but are not limited to:

- Nanostructures with functionalities to control and detect environmental pollutants;

- Engineering novel functionalities of nanomaterials for environmental clean-up;

- Nanostructures for catalytic/photocatalytic elimination of pollutants from water, air, or soil;

- Porous nanoarchitectures for adsorption of chemical pollutants;

- Studies on photo/catalytic reactions and sorption mechanisms applied to environmental nanotechnology.

Dr. Gabriela Carja
Dr. Elena M. Seftel
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. 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

nanostructures
nanotechnology
environmental clean-up

Published Papers (3 papers)

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Research

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21 pages, 5755 KiB

Open AccessFeature PaperArticle

Fe-Ce/Layered Double Hydroxide Heterostructures and Their Derived Oxides: Electrochemical Characterization and Light-Driven Catalysis for the Degradation of Phenol from Water

by Mihaela Mureseanu, Nicoleta Cioatera and Gabriela Carja

Nanomaterials 2023, 13(6), 981; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13060981 - 8 Mar 2023

Cited by 6 | Viewed by 1521

Abstract

Fe-Ce/layered double hydroxides (LDHs) were synthesized via a facile route by exploiting the “structural memory” of the LDH when the calcined MgAlLDH and ZnAlLDH were reconstructed in the aqueous solutions of FeSO₄/Ce(SO₄)₂. XRD analysis shows the formation of heterostructured catalysts that entangle the structural characteristics of the LDHs with those of Fe₂O₃ and CeO₂. Furthermore, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, TG/DTG, SEM/EDX and TEM results reveal a complex morphology defined by the large nano/microplates of the reconstructed LDHs that are tightly covered with nanoparticles of Fe₂O₃ and CeO₂. Calcination at 850 °C promoted the formation of highly crystallized mixed oxides of Fe₂O₃/CeO₂/ZnO and spinels. The photo-electrochemical behavior of Fe-Ce/LDHs and their derived oxides was studied in a three-electrode photo-electrochemical cell, using linear sweep voltammetry (LSV), Mott–Schottky (M-S) analysis and photo-electrochemical impedance spectroscopy (PEIS) measurements, in dark or under illumination. When tested as novel catalysts for the degradation of phenol from aqueous solutions, the light-driven catalytic heterojunctions of Fe-Ce/LDH and their derived oxides reveal their capabilities to efficiently remove phenol from water, under both UV and solar irradiation. Full article

(This article belongs to the Special Issue Advances in Engineered Nanostructures for Detection, Control and Removal of Environmental Pollutants)

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12 pages, 1449 KiB

Open AccessArticle

Significance of Ionic Character Induced by Ga-Doped γ-Al₂O₃ on Polyethylene Degradation to the Precursors of Gasoline and Diesel Oil with a Trace Amount of Wax

by Syed Kamran Haider, Amol Uttam Pawar, Don Keun Lee and Young Soo Kang

Nanomaterials 2022, 12(18), 3122; https://0-doi-org.brum.beds.ac.uk/10.3390/nano12183122 - 9 Sep 2022

Cited by 1 | Viewed by 1505

Abstract

Polyethylene degradation has a significant ecological impact but is also economically beneficial because it generates fuels and useful chemical products. Our study mainly describes the cleavage of C-C and C-H bonds when polyethylene (dispersed in 1-octadecene) was low-temperature heat-treated in two steps, at 180 and 250 °C, for 24 h for each step. Finally, it was converted to a mixture of the precursors of gasoline and diesel oil with a trace amount of wax. A series of reactions resulted in cracking, dehydrogenation and oxidation, hence producing polycarboxylic acids and saturated and unsaturated hydrocarbons. ESI-MS analysis revealed that mixed oil consisted of low carbon number hydrocarbons and their derivatives of carboxylic acids, with the carbon number ranging from C-6 to C-18. In the trace amount of wax, complicated carboxylic acids and hydrocarbons with carbon number C-22 to C-58 were also identified. FT-IR analysis further confirmed the presence of carboxylic acid derivatives and double bonds in the degradation products. γ-Al₂O₃ nanorods effectively catalyzed the degradation process by enhancing the C-C chain length in the products. Lewis acid (Al) and Lewis base (oxygen) in the γ-Al₂O₃ induced ionic character of the C-C bond chain, which led to the efficient cracking of the C-C bond. Poor shielding effect, smaller atomic size and greater ionization energy made Ga a stronger Lewis acid compared to Al; hence, Ga-doped γ-Al₂O₃ catalyzed the degradation process even more effectively. Full article

(This article belongs to the Special Issue Advances in Engineered Nanostructures for Detection, Control and Removal of Environmental Pollutants)

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Review

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37 pages, 6476 KiB

Open AccessReview

Recent Advances in Biomass-Based Materials for Oil Spill Cleanup

by Dan Ouyang, Xiaotian Lei and Honglei Zheng

Nanomaterials 2023, 13(3), 620; https://0-doi-org.brum.beds.ac.uk/10.3390/nano13030620 - 3 Feb 2023

Cited by 8 | Viewed by 3132

Abstract

Oil spill on sea surfaces, which mainly produced by the oil leakage accident happened on tankers, offshore platforms, drilling rigs and wells, has bring irreversible damage to marine environments and ecosystems. Among various spill oil handling methods, using sorbents to absorb and recover spill oils is a perspective method because they are cost-effective and enable a high recovery and without secondary pollution to the ecosystem. Currently, sorbents based on biomass materials have aroused extensively attention thanks to their features of inexpensive, abundant, biodegradable, and sustainable. Herein, we comprehensively review the state-of-the-art development of biomass-based sorbents for spill oil cleanup in the recent five years. After briefly introducing the background, the basic theory and material characteristics for the separation of oil from water and the adsorption of oils is also presented. Various modification methods for biomass materials are summarized in section three. Section four discusses the recent progress of biomass as oil sorbents for oil spill cleanup, in which the emphasis is placed on the oil sorption capacity and the separation efficiency. Finally, the challenge and future development directions is outlined. Full article

(This article belongs to the Special Issue Advances in Engineered Nanostructures for Detection, Control and Removal of Environmental Pollutants)

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