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Catalysts
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Novel Catalysts for Environmental Catalysis
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Novel Catalysts for Environmental Catalysis

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

Deadline for manuscript submissions: 30 June 2025 | Viewed by 2207

Special Issue Editors

Prof. Dr. Tifeng Jiao

E-Mail Website
Guest Editor
State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
Interests: heterogeneous catalysis; electrocatalysis; nanocatalysts; nanocomposites
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Peizhi Guo

E-Mail Website
Guest Editor
Institute of Materials for Energy and Environment, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China
Interests: colloidal nanocrystal; assembly; electrocatalysis; surfactant; alloy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Environmental concerns have been great threats to the development of human beings across the world. The preservation of the environment has attracted great attention in recent years. Numerous efforts have been dedicated to the research and development of novel catalysts for environmental catalysis, which is considered to be a promising strategy to this challenge. Advanced catalysts play a key role in the field of environment protection, such as emission control, solid waste treatment, water purification, clean energy conversion, and so on. Nevertheless, the development of low-cost, efficient, and stable catalysts with tunable structures for environmental catalysis remains a challenge.

This Special Issue will mainly comprise research on advanced catalysts for environmental catalysis. Potential topics include but are not limited to the following: emission control, solid waste treatment, water purification, clean energy conversion, biomass conversion, CO2 conversion and utilization, and hydrogen production. All studies within the scope of this Special Issue, including original research papers, review articles, short communications, and perspective articles, are invited for submission.

Prof. Dr. Tifeng Jiao
Prof. Dr. Peizhi Guo
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. 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

  • heterogeneous catalysis
  • photo- and/or electrocatalysis
  • emission control
  • solid waste treatment
  • water purification
  • clean energy conversion
  • biomass conversion
  • CO2 conversion and utilization
  • hydrogen production

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

13 pages, 3695 KiB  
Article
Catalytic Ozonation of Formaldehyde with an Oxygen-Vacancy-Rich MnOx/γ-Al2O3 Catalyst at Room Temperature
by Yulin Sun, Yiwei Zhang, Baoqing Hou, Yong He, Wubin Weng, Yanqun Zhu and Zhihua Wang
Catalysts 2024, 14(12), 885; https://doi.org/10.3390/catal14120885 - 3 Dec 2024
Viewed by 797
Abstract
Formaldehyde (HCHO) is known as one of the important indoor organic pollutants. How to remove and decompose the low concentration of formaldehyde at room temperature is important for indoor environments. Catalytic ozonation is an efficient method to thoroughly remove HCHO at room temperature, [...] Read more.
Formaldehyde (HCHO) is known as one of the important indoor organic pollutants. How to remove and decompose the low concentration of formaldehyde at room temperature is important for indoor environments. Catalytic ozonation is an efficient method to thoroughly remove HCHO at room temperature, with high efficiency and few byproducts. A series of MnOx/γ-Al2O3 catalysts were prepared in this work via the impregnation method and treated with different reagents (acid, alkali, and H2O2) to evaluate their catalytic activity for HCHO removal. The results showed that MnAl-II (acid treatment) performed well in activity tests, reaching a nearly 100% HCHO conversion at an O3/HCHO of 2.0 and attaining a CO2 selectivity of above 95% at an O3/HCHO of 3.0 at 30 °C, with almost no ozone residual existing. The larger specific surface area, abundant oxygen vacancies, and higher number of acid sites contributed to the excellent performance of MnAl-II. Stability and H2O resistance tests of MnAl-II were also conducted. To reveal the intermediate product formation and further investigate the reaction mechanism of HCHO ozonation, in-situ DRIFTS measurement was carried out combined with DFT calculations. Full article
(This article belongs to the Special Issue Novel Catalysts for Environmental Catalysis)
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14 pages, 8507 KiB  
Article
Magnetic Ternary Hybrid Composites as an Efficient Photocatalyst for Degradation of Acid Orange 7 Dye
by Yaohui Xu, Qin Wang, Yuting Li and Zhao Ding
Catalysts 2024, 14(12), 880; https://doi.org/10.3390/catal14120880 - 2 Dec 2024
Cited by 2 | Viewed by 795
Abstract
Based on the photocatalytic activity and magnetic nature of magnetite and goethite, as well as the oxygen storage characteristic of cerianite, a magnetic ternary hybrid composite including cubic CeO2, cubic Fe3O4 and orthorhombic FeOOH, designated as Fe3 [...] Read more.
Based on the photocatalytic activity and magnetic nature of magnetite and goethite, as well as the oxygen storage characteristic of cerianite, a magnetic ternary hybrid composite including cubic CeO2, cubic Fe3O4 and orthorhombic FeOOH, designated as Fe3O4/FeOOH/CeO2, was successfully synthesized with different Ce:Fe molar ratios using a simple hydrothermal route without subsequent calcination process, and employed as photocatalysts for the degradation of Acid Orange 7 (AO7) dye. The absorption range of light by the Fe3O4/FeOOH/CeO2 composites was broadened, and the intensity was enhanced. Furthermore, there existed a possibility of hybridization and doping among the three crystalline structures, with the elements Ce, Fe and O exhibiting a uniform distribution, significantly enhancing the photocatalytic efficiency of the Fe3O4/FeOOH/CeO2 composites in promoting the photodegradation of AO7. The magnetic response behaviors of hybrid composites synthesized with different Ce:Fe molar ratios were investigated. The adsorptive degradation of AO7 in darkness and the photocatalytic degradation of AO7 under UV light illumination were evaluated. Moreover, ten cycling runs of the photocatalytic degradation of AO7 under simulated UV illumination of Fe3O4/FeOOH/CeO2 synthesized with a Ce:Fe molar ratio of 1:15 were performed. The hybrid ternary composites were proved to have excellent magnetic sensitivity, exhibited outstanding photocatalytic activities and demonstrated remarkable stability. It is anticipated that magnetic Fe3O4/FeOOH/CeO2 ternary hybrid composites may have potential applications in the treatment of organic dye sewage. Full article
(This article belongs to the Special Issue Novel Catalysts for Environmental Catalysis)
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