Advanced Catalysts for Energy Conversion and Environmental Protection

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

Deadline for manuscript submissions: 31 December 2025 | Viewed by 1626

Special Issue Editor


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Guest Editor
Key Laboratory for Ecological Metallurgy of Multimetallic Mineral, Ministry of Education, School of Metallurgy, Northeastern University, Shenyang 110819, China
Interests: photocatalysts; electrocatalysts; water splitting; CO2 reduction; environmental remediation; energy conversion

Special Issue Information

Dear Colleagues,

The transition toward sustainable energy systems and environmental remediation demands innovative catalytic solutions to address global challenges such as climate change, energy scarcity, and environmental pollution. This Special Issue focuses on the design, synthesis, and application of advanced catalysts for energy conversion and environmental protection, aiming to foster interdisciplinary research that bridges fundamental science with scalable technologies for a sustainable future. We invite original research, reviews, and perspectives on novel catalytic materials and processes, including, but not limited to, the following:

  • Photocatalytic and electrocatalytic water splitting;
  • CO2 reduction to fuels and chemicals;
  • Hydrogen production/storage;
  • Air and water purification;
  • Pollutant degradation;
  • Greenhouse gas mitigation;
  • Industrial Catalysis Technology;
  • Cutting-edge characterization techniques;
  • Computational modeling.

If you would like to submit papers for publication in this Special Issue or have any questions, please contact the in-house Editor, Mr. Ives Liu (ives.liu@mdpi.com).

Dr. Xiaohong Yang
Guest Editor

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Keywords

  • photoelectrocatalytic water splitting
  • photoelectrocatalytic CO2 reduction
  • hydrogen production/storage
  • energy conversion
  • environmental protection

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Published Papers (3 papers)

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Research

17 pages, 4281 KB  
Article
Development of Highly Active and Stable SmMnO3 Perovskite Catalysts for Catalytic Combustion
by Dinghua Ruan, Shipeng Wu, Chenyi Yuan, Zhen Huang, Wei Shen and Hualong Xu
Catalysts 2025, 15(12), 1149; https://doi.org/10.3390/catal15121149 - 5 Dec 2025
Viewed by 368
Abstract
The development of highly efficient and stable non-noble metal catalysts for volatile organic compound (VOCs) abatement remains a pressing challenge. Mn-based perovskites exhibit superior thermal stability as redox catalysts but suffer from limited activity in light alkane combustion. This study systematically investigates the [...] Read more.
The development of highly efficient and stable non-noble metal catalysts for volatile organic compound (VOCs) abatement remains a pressing challenge. Mn-based perovskites exhibit superior thermal stability as redox catalysts but suffer from limited activity in light alkane combustion. This study systematically investigates the performance of SmMnO3 (SMO) perovskite catalysts for propane oxidation through selective etching of Sm species. By precisely controlling the etching process, the removal of surface Sm exposes more active sites and significantly increases the specific surface area from 22.05 m2·g−1 for pristine SMO to 66.15 m2·g−1. SEM and N2 adsorption–desorption analysis revealed that prolonged etching induces surface roughening and pore channel expansion. XPS and XANES measurements confirmed that an increased Mn4+/Mn3+ ratio enhances reactant adsorption and accessibility to active sites. The etched catalysts exhibited markedly improved activity for propane oxidation, achieving a ~50 °C reduction in light-off temperature compared to the raw SMO. This performance enhancement is attributed to the synergistic effects of enhanced oxygen mobility, elevated Mn4+ content, and abundant oxygen vacancies. Further characterization via Raman spectroscopy and H2-TPR revealed weakened Jahn–Teller distortion and lower reduction temperatures, reflecting optimized Mn–O interactions and superior redox properties. Among the samples, SMO-20 demonstrated exceptional stability. Moreover, the SMO-20/cordierite monolithic catalyst maintained outstanding catalytic performance over 1000 h of operation. This work offers a facile and effective approach to engineer perovskite catalysts and provides new insights into structure–activity relationships in VOC oxidation. Full article
(This article belongs to the Special Issue Advanced Catalysts for Energy Conversion and Environmental Protection)
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17 pages, 6086 KB  
Article
Enhanced Hydrogen Desorption Performance of AlH3 via MXene Catalysis
by Zhiling He, Liang Zhang, Hua Ning, Zhicong Yang, Jiazheng Mao, Hui Luo, Qinqin Wei, Guangxu Li, Cunke Huang, Zhiqiang Lan, Wenzheng Zhou, Jin Guo, Xinhua Wang and Haizhen Liu
Catalysts 2025, 15(12), 1143; https://doi.org/10.3390/catal15121143 - 4 Dec 2025
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Abstract
Aluminum hydride (AlH3) features a theoretical hydrogen content of 10.1 wt%, with initial hydrogen desorption temperatures generally ranging from 150 to 200 °C. However, its metastability makes it complicated to achieve low hydrogen desorption temperatures alongside high desorption capacities, which has [...] Read more.
Aluminum hydride (AlH3) features a theoretical hydrogen content of 10.1 wt%, with initial hydrogen desorption temperatures generally ranging from 150 to 200 °C. However, its metastability makes it complicated to achieve low hydrogen desorption temperatures alongside high desorption capacities, which has limited its practical application. This study aims to improve the hydrogen desorption performance of AlH3 by incorporating different MXenes (V2C, Nb2C, Ti3C2, Ti3CN) accompanied by ball milling condition and catalyst content optimizations. It was shown that AlH3 catalyzed with 1 wt% Nb2C, ball milled at 300 rpm for 180 min under an argon atmosphere, exhibits the best performance, achieving an initial hydrogen desorption temperature of 95 °C and a final hydrogen desorption content of 9.3 wt%. It was further demonstrated that Nb2C MXene mainly acts as an efficient catalyst for the hydrogen desorption process of AlH3 and can extend the Al–H bonds of AlH3 in local interphase regions observed by means of theoretical calculation, thus enhancing the hydrogen desorption performance of AlH3. This work proposes a method to achieve high-capacity and low-temperature hydrogen desorption from metastable AlH3 through proper ball milling and the introduction of MXenes. Full article
(This article belongs to the Special Issue Advanced Catalysts for Energy Conversion and Environmental Protection)
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19 pages, 7988 KB  
Article
Ru-Modified α-MnO2 as an Efficient PMS Activator for Carbamazepine Degradation: Performance and Mechanism
by Panfeng Hu, Long Qin, Manman Feng, Yuanling Cheng, Pan Tang, Beibei Xin, Wei Song, Quanfeng Wang and Jujiao Zhao
Catalysts 2025, 15(11), 1085; https://doi.org/10.3390/catal15111085 - 17 Nov 2025
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Abstract
Although Ru-based catalysts have been investigated in various oxidation systems, their application in sulfate radical-based AOPs, particularly as heterogeneous activators for acidic wastewater treatment, remains limited. Herein, Ru was incorporated into α-MnO2 via lattice doping and surface loading to construct Rulatt [...] Read more.
Although Ru-based catalysts have been investigated in various oxidation systems, their application in sulfate radical-based AOPs, particularly as heterogeneous activators for acidic wastewater treatment, remains limited. Herein, Ru was incorporated into α-MnO2 via lattice doping and surface loading to construct Rulatt/α-MnO2 and Rusurf/α-MnO2, and their PMS activation performance toward carbamazepine (CBZ) degradation was evaluated. Rulatt/α-MnO2 exhibited superior activity, achieving near-complete CBZ removal within minutes under acidic conditions. PMS dosage, catalyst loading, and pH affected the degradation efficiency, with acidic environments significantly enhancing PMS activation. Cl slightly promoted CBZ degradation, whereas HCO3 and natural organic matter inhibited it. Mechanistic analysis revealed that Ru activated PMS through a nonradical pathway, continuously generating 1O2 via a reversible Ru (II)/Ru (III)/Ru (IV) cycle, while the Mn (III)/Mn (IV) redox couple acted as an electron buffer to sustain Ru cycling and improve durability. The catalyst maintained high activity in complex water matrices, demonstrating strong potential for practical remediation of CBZ-contaminated acidic wastewater. Full article
(This article belongs to the Special Issue Advanced Catalysts for Energy Conversion and Environmental Protection)
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