Advanced Nanomaterials for Wastewater Treatment

A special issue of Environments (ISSN 2076-3298).

Deadline for manuscript submissions: closed (20 December 2024) | Viewed by 1182

Special Issue Editors


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Guest Editor
Dipartimento di Ingegneria Meccanica, Energetica e Gestionale, Università della Calabria, I-87036 Arcavacata di Rende, CS, Italy
Interests: microporous materials; carbon nanotubes; photocatalytic materials; water purification; environmental protection; ecomaterials
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Chemical Engineering, Tennessee Technological University, Cookeville, TN, USA
Interests: environmental catalysis (advanced oxidation in water, soil and air); photocalytic clean energy production; electrokinetics-based remediation; environmental impact of biomedical hazards; battery and fuel cell materials; nanostructured materials-with functional performance (health care engineering applications, hydrogels for clinical diagnostics, wound healing, tissue scaffolds and assisted drug delivery)
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In recent years, nanomaterials have been the subject of research and development, successfully applied in many fields, such as catalysis, medicine, electronics and biology. Some of the properties of nanomaterials are due to the huge increase in surface area when going from a powder material to a nanoparticle material. The increase in surface area leads to an increase in the effectiveness of the reactions that can occur on them. In particular, the application of nanomaterials in wastewater treatment has attracted wide attention. Due to their small size, and therefore large specific surface areas, nanomaterials have strong adsorption and reactivity capabilities. Furthermore, the mobility of nanomaterials in solution is extremely high. The advent of nanomaterials offers numerous opportunities for the removal of heavy metals, microorganisms and organic pollutants from wastewater. Nanomaterials will influence the development of many industrial sectors and research areas in the future.

This Special Issue invites submissions of original research contributions and reviews regarding recent advances in the development, production and characterization of nanomaterials, as well as their use in new fields of application.

Dr. Pierantonio de Luca
Prof. Dr. Pedro E. Arce
Guest Editors

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Keywords

  • nanomaterials
  • wastewater
  • carbon nanotubes
  • purification
  • water pollution

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Published Papers (1 paper)

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Research

18 pages, 11905 KiB  
Article
The Structural Evolution of Bimetallic Fe/Ag Mediated by Montmorillonite and Its Effect on Triclosan in the Environment
by Liting Ju, Qunyi Liu, Hongye Feng, Pingxiao Wu, Yiwen Ju, Li Zhang and Junbo Wang
Environments 2025, 12(2), 65; https://doi.org/10.3390/environments12020065 - 14 Feb 2025
Viewed by 603
Abstract
Montmorillonite (Mont) is a natural two-dimensional material with a 2:1 layered silicate crystal structure. It possesses abundant surface groups, cation exchange capacity, and adsorption performance. In addition, it has other advantages such as abundant reserves, environmental friendliness, strong mechanical stability, and a large [...] Read more.
Montmorillonite (Mont) is a natural two-dimensional material with a 2:1 layered silicate crystal structure. It possesses abundant surface groups, cation exchange capacity, and adsorption performance. In addition, it has other advantages such as abundant reserves, environmental friendliness, strong mechanical stability, and a large specific surface area. As such, it shows excellent potential for application in environmental remediation. In the following paper, we focus on the removal of TCS (triclosan) from an aqueous environment by utilizing montmorillonite-supported bimetallic Fe/Ag particles. We use scanning electron microscopy, X-ray diffraction patterns, Fourier-transform infrared spectra, and specific surface area to analyze the structure, morphology, and composition of these nanocomposites. The effects of the pH, different materials, contact time, and different initial concentrations on the degradation efficiency of TCS were studied systematically. Based on the results of our study, montmorillonite-supported bimetallic Fe/Ag nanoparticles (Fe/Ag-Mont) should be categorized as a type of mesoporous material of high uniformity because the pore size of all its catalysts ranges from 10 to 20 nm, and they are well-distributed. The Si-O stretching vibrations of montmorillonite can be changed by adding Fe/Ag. We found that Fe or Ag combined with -O to form a new bond and interacted with Si-O, and the incorporation of Fe/Ag-Mont nanoparticles removed TCS with better reduction rates. By enhancing reduction capacity, the pH was below 4 due to H• species generation by Fe/Ag. H• was the main factor enhancing the redox reaction in reducing TCS. The pH controlled the competition between Fe corrosion and silver formation, which enabled the system to self-regulate. In addition, this study provided a suitable method of efficiently synthesizing clay-supported bimetallic nano-system materials for reduction. Full article
(This article belongs to the Special Issue Advanced Nanomaterials for Wastewater Treatment)
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