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Catalysts
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Environmentally Friendly Catalytic Nanomaterials for Advanced Oxidation and Reduction Technology
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Environmentally Friendly Catalytic Nanomaterials for Advanced Oxidation and Reduction Technology

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

Deadline for manuscript submissions: 15 April 2026 | Viewed by 2647

Special Issue Editors

Dr. Ming Zhang

E-Mail Website
Guest Editor
Department of Environmental Engineering, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
Interests: environmental functional material; advanced oxidation processes
Special Issues, Collections and Topics in MDPI journals
Dr. Zhanghao Chen

E-Mail Website
Guest Editor
State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
Interests: advanced oxidation/reduction process; emerging pollutants; radical chemistry; environmental interface reaction; contaminant degradation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

In 2025, a new Special Issue of Catalysts (ISSN 2073-4344) will be launched, entitled “Environmentally Friendly Catalytic Nanomaterials for Advanced Oxidation and Reduction Technology”. Advanced oxidation and reduction technology is considered to be an effective means to deal with environmental pollution. A great deal of research has been conducted on the development of efficient catalysts. The development of environmentally friendly catalysts is considered to be in line with current development trends. We aim for this Special Issue to encompass advanced oxidation technology, advanced reduction technology, nanotechnology, and environmental modification.

Dr. Ming Zhang
Dr. Zhanghao Chen
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 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-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

  • nanomaterials
  • AOPs
  • ARPs
  • water treatment

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Published Papers (3 papers)

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Research

17 pages, 18010 KB  
Article
Sustainable Synthesis of Phytoremediated Eichhornia crassipes-Derived Carbon Quantum Dot Supported on Zinc Oxide (CQD-ZnO): Characterisation and Sonocatalytic Activity
by Yean Ling Pang, Hui Wun Tan, Steven Lim, Jia Wei Tai, Woon Chan Chong and Siew Hoong Shuit
Catalysts 2025, 15(11), 1051; https://doi.org/10.3390/catal15111051 - 4 Nov 2025
Viewed by 628
Abstract
Phytoremediation is considered as a green alternative for remediating metal-contaminated soil and water, yet further efforts are needed to minimise secondary pollution after phytoremediation. This study investigates a cost-effective and sustainable method to synthesise carbon quantum dot supported on zinc oxide (CQD-ZnO) composites [...] Read more.
Phytoremediation is considered as a green alternative for remediating metal-contaminated soil and water, yet further efforts are needed to minimise secondary pollution after phytoremediation. This study investigates a cost-effective and sustainable method to synthesise carbon quantum dot supported on zinc oxide (CQD-ZnO) composites using extracted zinc (Zn) from post-phytoremediated plants, plant extracts, and CQDs derived from water hyacinth (Eichhornia crassipes) for the sonocatalytic degradation of malachite green. The CQD-ZnO materials were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface analysis, and ultraviolet–visible (UV–Vis) spectroscopy to confirm their crystalline structure, morphology, functional groups, surface area, and optical properties. The composites exhibited disaggregation of agglomerates, high crystallinity, and increased carbon content due to the addition of CQDs containing phenolic functional groups (e.g., polyphenols, flavonoids) from the plant extract. The highest sonocatalytic degradation efficiency (84.52%) was achieved after 90 min of treating 10 ppm malachite green using 1 g/L of the CQD-ZnO composite at a natural pH, with 300 W ultrasonic power at 25 kHz. This study paves the way for the development of environmentally friendly, high-performance sonocatalysts from post-phytoremediated plants for wastewater treatment applications. Full article
(This article belongs to the Special Issue Environmentally Friendly Catalytic Nanomaterials for Advanced Oxidation and Reduction Technology)
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15 pages, 2371 KB  
Article
Zn/Fe-MOF-Derived Carbon Nanofibers via Electrospinning for Efficient Plasma-Catalytic Antibiotic Removal
by Ying Xia, Shaoqun Tao, Yu Liu, Chenyu Zhao, Weichuan Qiao, Sen Chen, Jingqi Ruan, Ming Zhang and Cheng Gu
Catalysts 2025, 15(10), 944; https://doi.org/10.3390/catal15100944 - 1 Oct 2025
Viewed by 641
Abstract
Plasma has become an up-and-coming advanced oxidation technology for wastewater treatment. However, its efficiency is often limited due to the lack of high-performance catalytic materials. In this study, one-dimensional carbon nanofiber precursors were first fabricated via electrospinning, followed by the in situ growth [...] Read more.
Plasma has become an up-and-coming advanced oxidation technology for wastewater treatment. However, its efficiency is often limited due to the lack of high-performance catalytic materials. In this study, one-dimensional carbon nanofiber precursors were first fabricated via electrospinning, followed by the in situ growth of the Zn/Fe-MOF on their surfaces. After pyrolysis at different temperatures, a series of carbon-based catalysts (FeNFC) were obtained. This new type of catalyst possesses advantages such as high porosity, a large specific surface area, and mechanical stability. Using tetracycline (TTCH) as the target pollutant, the performance of the catalyst was evaluated in the dielectric barrier discharge (DBD) system. The study showed that the addition of FeNFC significantly increased the degradation rate of TTCH in the system. Comparing different pyrolysis temperatures, at 900 °C, the comprehensive performance of the catalyst (FeNFC-900) was the best (the kinetic constant was kobs = 0.126 min−1, and the removal rate of TTCH was 91.8% within 30 min). The catalytic performance was influenced by factors such as the dosage of the catalyst, the concentration of TTCH, the power of DBD, and the initial pH. The catalytic effect of the material increased within a certain range with the increase in the catalyst dosage. The increase in TTCH concentration led to a decrease in the catalytic performance. The higher the power of the DBD, the higher the removal rate of TTCH. Moreover, when the initial pH was strongly alkaline, the catalytic effect of the catalyst was the best (kobs = 0.275 min−1, and the removal rate of TTCH was 98.7% within 30 min). Ionic interference tests demonstrated the strong resistance of FeNFC to common water matrix components, while radical quenching experiments revealed that multiple reactive species contributed to TTCH degradation. This work has broad application prospects for enhancing the efficiency of DBD systems in the removal of TTCH. Full article
(This article belongs to the Special Issue Environmentally Friendly Catalytic Nanomaterials for Advanced Oxidation and Reduction Technology)
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15 pages, 1737 KB  
Article
Comparative Thermal and Supramolecular Hydrothermal Synthesis of g-C3N4 Toward Efficient Photocatalytic Degradation of Gallic Acid
by Fernando Cantor Pérez, Julia Liliana Rodríguez Santillán, Ricardo Santillán Peréz, Iliana Fuentes Camargo, Issis C. Romero Ibarra, Jesús I. Guzmán Castañeda, Jorge L. Vazquez-Arce, Hugo Tiznado and Hugo Martínez Gutiérrez
Catalysts 2025, 15(9), 858; https://doi.org/10.3390/catal15090858 - 5 Sep 2025
Viewed by 1032
Abstract
Gallic acid (GA), a polyphenol extensively used in the food, wine, and pharmaceutical industries, is known for its inhibitory effects on soil microbial activity. Photocatalytic degradation offers an environmentally friendly solution for GA removal from water. In this work, graphitic carbon nitride (g-C [...] Read more.
Gallic acid (GA), a polyphenol extensively used in the food, wine, and pharmaceutical industries, is known for its inhibitory effects on soil microbial activity. Photocatalytic degradation offers an environmentally friendly solution for GA removal from water. In this work, graphitic carbon nitride (g-C3N4) photocatalysts were synthesized by two methods: thermal exfoliation (CN-E) and supramolecular assembly via hydrothermal processing (HCN-II). Structural analyses by XRD, FTIR, and XPS confirmed the formation of the g-C3N4 framework, while SEM revealed that CN-E consisted of folded and curled nanosheets, whereas HCN-II displayed a polyhedral–nanosheet hybrid architecture with internal channels. Both materials achieved approximately 80% GA degradation within 180 min under visible-light irradiation, yet HCN-II exhibited a superior apparent rate constant (k = 0.01156 min−1) compared with CN-E. Radical trapping experiments demonstrated that O2•− and h+ were the primary reactive oxygen species involved, with OH• making a minor contribution. The enhanced performance of HCN-II is attributed to its higher surface area, improved light harvesting, and efficient charge separation derived from supramolecular assembly. These findings highlight the potential of engineered g-C3N4 nanostructures as efficient, metal-free photocatalysts for the degradation of recalcitrant organic pollutants in water treatment applications. Full article
(This article belongs to the Special Issue Environmentally Friendly Catalytic Nanomaterials for Advanced Oxidation and Reduction Technology)
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