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Monitor and Degradation of Emerging Pollutants in Water

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water Quality and Contamination".

Deadline for manuscript submissions: 31 January 2027 | Viewed by 567

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Guest Editor
Instituto de Estudios Ambientales y Recursos Naturales (i-UNAT), Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas de Gran Canaria, Spain
Interests: emerging pollutants; persistent, mobile, and toxic compounds; high-resolution mass spectrometry; transformation products; extraction and preconcentration techniques
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Special Issue Information

Dear Colleagues,

As many of you are aware, we are increasingly surrounded by organic compounds present in the products we use every day. Many of these substances are routinely detected in wastewater treatment plants (WWTPs), including pharmaceuticals and personal care products, industrial chemicals such as plasticizers, flame retardants, tire‑derived compounds, pesticides, and others. Although these compounds typically occur at very low concentrations, they may still exert significant adverse effects.

This Special Issue invites contributions focused on the monitoring of emerging pollutants not only in wastewater, but also in runoff, river water, groundwater, and seawater, with the aim of improving our understanding of their sources, occurrence, fate, and concentration levels. We also welcome studies employing non‑target analysis and the tentative identification of novel pollutants in the above‑mentioned matrices.

Dr. Sergio Santana Viera
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Water 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

  • emerging pollutants
  • persistent, mobile and toxic compounds
  • high-resolution mass spectrometry
  • transformation productos
  • extraction and preconcentration techniques

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Published Papers (1 paper)

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Research

24 pages, 12019 KB  
Article
Nitrogen-Doped Carbon-Encapsulated Co–Fe Catalyst for Efficient Peroxymonosulfate Activation Toward Rhodamine B Degradation
by Yixin Pan, Yajun Chen, Wenshuo Zhang and Xiaofan Lv
Water 2026, 18(16), 1928; https://doi.org/10.3390/w18161928 - 7 Aug 2026
Viewed by 384
Abstract
A nitrogen-doped carbon-confined cobalt–iron bimetallic catalyst (CFNC) was fabricated through high-temperature pyrolysis of a ZIF-67-modified CoFe2O4 precursor and employed as a heterogeneous activator for peroxymonosulfate (PMS)-mediated Rhodamine B (RhB) degradation. The physicochemical properties of the as-prepared catalyst were investigated by [...] Read more.
A nitrogen-doped carbon-confined cobalt–iron bimetallic catalyst (CFNC) was fabricated through high-temperature pyrolysis of a ZIF-67-modified CoFe2O4 precursor and employed as a heterogeneous activator for peroxymonosulfate (PMS)-mediated Rhodamine B (RhB) degradation. The physicochemical properties of the as-prepared catalyst were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) analysis. These analyses demonstrated that Co–Fe bimetallic species were successfully embedded within the nitrogen-doped carbon framework, forming a confined carbon-supported catalytic structure. Under optimized conditions (CFNC dosage of 20 mg L−1, PMS concentration of 150 mg L−1, and initial pH of 7), the CFNC/PMS system achieved 99.45% RhB removal within 10 min. Moreover, the catalyst retained 78.91% degradation efficiency after five successive cycles, indicating its satisfactory reusability and structural stability. Mechanistic investigations based on radical scavenging experiments and electron paramagnetic resonance (EPR) analysis revealed that PMS activation over CFNC involved the coexistence of radical and non-radical oxidation pathways, in which singlet oxygen (1O2) played a predominant role. The defect-rich nitrogen-doped carbon matrix facilitated PMS adsorption and activation, promoting the selective formation of 1O2, while the confined Co–Fe bimetallic sites contributed to efficient electron transfer during the catalytic process. The synergistic coupling between the Co–Fe active centers and conductive carbon framework accounted for the enhanced catalytic performance, suppressed metal leaching, and long-term stability of CFNC. This work presents a promising approach for constructing robust bimetallic carbon-based catalysts and advances the application of PMS-driven advanced oxidation processes for wastewater remediation. Full article
(This article belongs to the Special Issue Monitor and Degradation of Emerging Pollutants in Water)
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