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Catalysts
Special Issues
Nanocatalysts for Contaminant Degradation
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Nanocatalysts for Contaminant Degradation

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Nanostructured Catalysts".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 394

Special Issue Editors

Dr. Yang Guo

E-Mail Website
Guest Editor
School of Environment and Resource, Shanxi University, Taiyuan 030006, China
Interests: advanced oxidation processes; catalytic ozonation; membrane catalysis; chemical kinetic modelling; emerging contaminants
Special Issues, Collections and Topics in MDPI journals
Dr. Dandan Xu

E-Mail Website
Guest Editor
College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541004, China
Interests: electrochemical degradation; electrocatalysis; constructed wetland; water pollution remediation
Dr. Yueshuang Mao

E-Mail Website
Guest Editor Assistant
School of Environment and Resource, Shanxi University, Taiyuan 030006, China
Interests: advanced oxidation processe; photocatalysis; microstructure regulation; reactive oxygen species; emerging contaminants
Dr. Qin Shi

E-Mail Website
Guest Editor Assistant
Guangxi Key Laboratory of Advanced Structural Materials and Carbon Neutralization, Guangxi Colleges and Universities Key Laboratory of Environmental-Friendly Materials and New Technology for Carbon Neutralization, School of Materials and Environment, Guangxi Minzu University, Nanning 530105, China
Interests: (photo-)electrochemical water splitting; photocatalysis; photocatalytic degradation; urea oxidation; (photo-)electrochemical interface

Special Issue Information

Dear Colleagues,

This Special Issue on “Nanocatalysts for Contaminant Degradation” aims to explore the latest advancements and innovative applications of nanocatalysts in the field of environmental remediation. Nanocatalysts, due to their unique properties such as a high surface area, enhanced reactivity, and tunable composition, have emerged as powerful tools for the degradation of various contaminants, including organic pollutants, heavy metals, and other hazardous substances. This Special Issue will cover a wide range of topics, including the synthesis and characterization of nanocatalysts, their mechanisms of action in contaminant degradation, and real-world applications in water and soil treatment. Through this collection of high-quality research articles, we hope to provide a comprehensive understanding of the current state of the art in nanocatalyst-based contaminant degradation and inspire further research in this promising area.

Dr. Yang Guo
Dr. Dandan Xu
Guest Editors

Dr. Yueshuang Mao
Dr. Qin Shi
Guest Editor Assistants

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. Catalysts is an international peer-reviewed open access monthly 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 2200 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

  • nanocatalysts
  • contaminant degradation
  • environmental remediation
  • organic pollutants
  • heavy metals
  • synthesis and characterization
  • water treatment
  • environmental science and technology

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Published Papers (1 paper)

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Research

15 pages, 1519 KB  
Article
Construction and Application of a Novel Three-Dimensional Electrocatalytic Ozonation System for Micropollutant Removal
by Yang Zhang, Xian Zhang, Shiyi Wang, Jiafeng Huang, Yuxiao Zhang, Yang Guo, Chunrong Wang and Tao Yu
Catalysts 2025, 15(11), 1026; https://doi.org/10.3390/catal15111026 - 31 Oct 2025
Viewed by 162
Abstract
Conventional two-dimensional (2D) electrocatalytic ozonation faces challenges such as low mass transfer efficiency, limited hydroxyl radical (•OH) yield, and insufficient pollutant degradation rates. To address these limitations, this study developed a novel three-dimensional electrocatalytic ozonation system using a 316 stainless-steel skeleton as the [...] Read more.
Conventional two-dimensional (2D) electrocatalytic ozonation faces challenges such as low mass transfer efficiency, limited hydroxyl radical (•OH) yield, and insufficient pollutant degradation rates. To address these limitations, this study developed a novel three-dimensional electrocatalytic ozonation system using a 316 stainless-steel skeleton as the cathode. By systematically comparing the ozone decay kinetics, •OH yield, imidacloprid degradation efficiency, and ozone mass transfer characteristics among the 3D electrocatalytic ozonation system, 2D electrocatalytic ozonation system, and conventional ozonation system, combined with electrode interface reaction analysis and structural simulation, the core mechanism by which the 3D structure enhances the electrocatalytic ozonation reaction was revealed. The results showed that the 3D electrocatalytic ozonation technology primarily promotes ozone decay and •OH generation through a reaction pathway dominated by the reduction of ozone at the cathode, while simultaneously enhancing pollutant removal efficiency. The pseudo-first-order kinetic constant for ozone decay in the 3D system reached 1.0 min−1, which was five times that of the 2D system (0.2 min−1). The •OH yield increased to 38%, significantly higher than that of the 2D system (15%) and conventional ozonation (10%). The complete degradation of imidacloprid was achieved within 5 min, and the degradation rate (2.14 min−1) was 10 times that of the 2D system. The high specific surface area (75 cm2/g, 30–90 times that of the 2D flat electrode) and 70% porosity of the 3D framework overcame the mass transfer limitation of the 2D structure, exhibiting excellent reaction activity. The ozone mass transfer amount was approximately 1.5 times that of the 2D electrode and 2 times that of conventional ozonation. This study provides theoretical support and technical basis for the engineering application of 3D electrocatalytic ozonation technology in the field of micro-pollutant control. Full article
(This article belongs to the Special Issue Nanocatalysts for Contaminant Degradation)
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