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Catalysts
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Non-precious Metal Catalysts for Energy and Environment-Related Applications
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Non-precious Metal Catalysts for Energy and Environment-Related Applications

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

Deadline for manuscript submissions: closed (31 January 2025) | Viewed by 6200

Special Issue Editors

Dr. Ning Han

E-Mail Website
Guest Editor
Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium
Interests: oxide catalysts; electrocatalysis; environmental catalysis
Special Issues, Collections and Topics in MDPI journals
Dr. Wei Guo

E-Mail Website
Guest Editor Assistant
Department of Materials Engineering, KU Leuven, Kasteelpark Arenberg 44, 3001 Leuven, Belgium
Interests: metal-organic frameworks; electrodeposition; electrocatalysis
Dr. Wei Zhang

E-Mail Website
Guest Editor Assistant
Institute of Energy Materials Science, University of Shanghai for Science and Technology, Shanghai 200093, China
Interests: electrocatalysis; transition metal; green chemistry; Li-S battery
Dr. Yang Ding

E-Mail Website
Guest Editor Assistant
College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
Interests: photocatalysis; hierarchically porous materials; water splitting; pollutant decomposition
Dr. Kaibin Chu

E-Mail Website
Guest Editor Assistant
School of Materials Science and Engineering, Linyi University, Linyi 276000, China
Interests: electrocatalysis; perovskite; high-entropy materials; nitrate/nitrogen reduction reaction

Special Issue Information

Dear Colleagues,

The research on non-precious metals in the fields of energy and the environment has garnered considerable attention. Compared to precious metals, non-precious metals exhibit not only excellent catalytic and energy storage performance but also reduce the development and application costs of related technologies. Therefore, research on non-precious metals in the energy and environment sectors is poised not only to drive technological advancements but also to make significant contributions to the establishment of clean and green energy and environmental systems. Given its significance, it is imperative to establish a forum facilitating scholarly discourse among researchers and engineers concerning the advancement of non-precious metals within the realms of energy and the environment.

This Special Issue is devoted to topics including the synthesis, characterization, application, and mechanism analysis of non-precious metals in energy and environmental uses. All studies (experimental and theoretical) falling within the scope of this Special Issue, including original research and review articles, short communications, and perspective articles, are welcome for submission.

Dr. Ning Han
Guest Editor

Dr. Wei Guo
Dr. Wei Zhang
Dr. Yang Ding
Dr. Kaibin Chu
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

  • energy storage
  • energy conversion
  • energy utilization
  • environment rehabilitation
  • electrocatalysis
  • photocatalysis
  • H2 production
  • N2 fixation
  • CO2 conversion
  • homogeneous catalysis
  • heterogeneous catalysis
  • green synthesis

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

Published Papers (4 papers)

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Research

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13 pages, 4856 KiB  
Article
Steam-Assisted Synthesis of Hectorite Loaded with Fe2O3 and Its Catalytic Fenton Degradation of Phenol
by Xia Liu, Haihui Xu, Xing Fu and Jinyang Chen
Catalysts 2024, 14(8), 521; https://doi.org/10.3390/catal14080521 - 12 Aug 2024
Cited by 2 | Viewed by 1324
Abstract
Fe2O3 loaded in the interlayer of hectorite was synthesized using a steam-assisted one-pot method to replace the traditional high-temperature and high-pressure hydrothermal method. The samples were characterized by means of X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron [...] Read more.
Fe2O3 loaded in the interlayer of hectorite was synthesized using a steam-assisted one-pot method to replace the traditional high-temperature and high-pressure hydrothermal method. The samples were characterized by means of X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and N2 adsorption–desorption isotherms. Fe2O3/hectorite had a layered hectorite structure. Due to the insertion of Fe2O3, the interlayer spacing increased and had a large specific surface area and pore size, benefiting catalytic reactions. Fe2O3/hectorite was used as a catalyst to degrade phenol in wastewater via the Fenton reaction. With this catalyst, the optimal Fenton reaction conditions were determined with an orthogonal test: pH, 3; temperature, 60 °C; and catalyst dosage, 0.5 g dm−3. Under these optimal reaction conditions, the degradation rate of phenol (200 mg dm–3) was 99.27% in 3 h. After five cycles, the degradation rate reached 95.72%, indicating the excellent reusability of this catalyst. In the temperature range 303–330 K, the catalytic degradation kinetics were studied as a pseudo-first-order reaction, and the apparent activation energy was 30.71 kJ/mol. Full article
(This article belongs to the Special Issue Non-precious Metal Catalysts for Energy and Environment-Related Applications)
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16 pages, 6084 KiB  
Article
New and Facile Preparation Method for Highly Active Iron Oxide Catalysts for CO Oxidation
by Steffen Schlicher, Roland Schoch, Nils Prinz, Mirijam Zobel and Matthias Bauer
Catalysts 2024, 14(7), 416; https://doi.org/10.3390/catal14070416 - 29 Jun 2024
Viewed by 1645
Abstract
This work presents a new and facile route for the preparation of iron oxide-based catalysts supported on alumina, which enables the targeted synthesis of catalysts with an increased amount of isolated tetrahedrally coordinated iron centers compared to a conventional impregnation procedure, and therefore [...] Read more.
This work presents a new and facile route for the preparation of iron oxide-based catalysts supported on alumina, which enables the targeted synthesis of catalysts with an increased amount of isolated tetrahedrally coordinated iron centers compared to a conventional impregnation procedure, and therefore leads to an increase in activity for CO oxidation reaction. By a multi-step impregnation–calcination protocol, the catalysts were synthesized with iron loadings of between 1 and 10 wt%, and their catalytic activity was then compared with a 10 wt% loaded catalyst prepared by conventional single impregnation. With a loading of 8 wt%, the presented catalysts showed an improved catalytic activity regarding light-off and full conversion temperatures compared to this reference. Through the application of several analytical methods (PXRD, PDF, DRUVS, SEM, XAFS), the improved catalytic activity can be correlated with an increased amount of isolated iron centers and a significantly reduced fraction of agglomerates or particles. Full article
(This article belongs to the Special Issue Non-precious Metal Catalysts for Energy and Environment-Related Applications)
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12 pages, 5321 KiB  
Article
Efficient Electron Transfer in g-C3N4/TiO2 Heterojunction for Enhanced Photocatalytic CO2 Reduction
by Peng Jiang, Yang Yu, Kun Wang and Wenrui Liu
Catalysts 2024, 14(6), 335; https://doi.org/10.3390/catal14060335 - 22 May 2024
Cited by 6 | Viewed by 1649
Abstract
Excessive emissions of carbon dioxide have led to the greenhouse effect and global warming. Reducing carbon dioxide into high-value-added chemicals through solar energy is a promising approach. Herein, a g-C3N4/TiO2 heterojunction photocatalyst with efficient electron transfer is designed [...] Read more.
Excessive emissions of carbon dioxide have led to the greenhouse effect and global warming. Reducing carbon dioxide into high-value-added chemicals through solar energy is a promising approach. Herein, a g-C3N4/TiO2 heterojunction photocatalyst with efficient electron transfer is designed for photocatalytic CO2 reduction. The CH4 (18.32 µmol·h−1·g−1) and CO (25.35 µmol·h−1·g−1) evolution rates of g-C3N4/TiO2 are higher than those of g-C3N4 and TiO2. The enhanced photocatalytic CO2 reduction performance is attributed to the efficient charge carrier transfer in the g-C3N4/TiO2 heterojunction. The electron transfer route was verified by in situ irradiated X-ray photoelectron spectroscopy (XPS). The photocatalytic CO2 reduction mechanism on g-C3N4/TiO2 was investigated by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). This work provides a strategy for designing a polymer/metallic oxide heterojunction with efficient electron transfer for enhanced photocatalytic CO2 reduction. Full article
(This article belongs to the Special Issue Non-precious Metal Catalysts for Energy and Environment-Related Applications)
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Review

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27 pages, 3473 KiB  
Review
Current Research Status and Future Perspective of Ni- and Ru-Based Catalysts for CO2 Methanation
by Muhammad Usman, Seetharamulu Podila, Majed A. Alamoudi and Abdulrahim A. Al-Zahrani
Catalysts 2025, 15(3), 203; https://doi.org/10.3390/catal15030203 - 21 Feb 2025
Cited by 1 | Viewed by 902
Abstract
Using anthropogenic carbon dioxide (CO2) as a feedstock for the production of synthetic fuel has gained significant attention in recent years. Among the various CO2 conversion pathways, the production of synthetic natural gas via CO2 methanation holds promise because [...] Read more.
Using anthropogenic carbon dioxide (CO2) as a feedstock for the production of synthetic fuel has gained significant attention in recent years. Among the various CO2 conversion pathways, the production of synthetic natural gas via CO2 methanation holds promise because of its potential for both carbon recycling and renewable energy storage. Nickel (Ni) and ruthenium (Ru) are the dominant metals employed as catalysts in the CO2 methanation reaction. This review summarizes the research landscape of Ni- and Ru-based catalysts over the last ten years. Bibliometric analysis revealed that China has the highest number of publications, the Chinese Academy of Sciences is the foremost academic institution, and the International Journal of Hydrogen Energy is the leading journal in this area of research. The publication trend revealed that research on Ni-based catalysts is published at almost four times the rate of Ru-based catalysts. Despite growth in research, problems with catalyst stability and kinetics still exist. The latest research on various catalytic systems, including supported, bimetallic, and single-atom catalysts and the fundamental challenges associated with the CO2 methanation process are reviewed. This review provides a new angle for future studies on catalysts based on non-noble Ni and noble Ru metals and opens the way for additional research in this area. Full article
(This article belongs to the Special Issue Non-precious Metal Catalysts for Energy and Environment-Related Applications)
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