Advanced Understanding of Metal-Based Catalysts

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: 28 November 2025 | Viewed by 1233

Special Issue Editors


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Guest Editor
Instituto de Tecnología Química, CSIC-UPV, Universidad Politécnica de Valencia, Av de los Naranjos s/n, 46022 Valencia, Spain
Interests: heterogeneous catalysis; in situ spectroscopy; infrared; Raman; XPS; near ambient XPS (NAP-XPS) spectroscopy; metal nanoparticles; metal cluster
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Instituto de Tecnología Química (ITQ), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. dels Tarongers, 46022 Valencia, Spain
Interests: heterogeneous catalysis; chemical kinetics; operando spectroscopy; reaction mechanism; metal catalysts

Special Issue Information

Dear Colleagues,

Metal-based catalysts plays a key role in many catalytic processes; however, the lack of fundamental understanding of catalytic active sites combined with the dynamic behavior of catalysts under reaction conditions and the complexity of many catalytic systems greatly limits the deployment of new emerging production processes. The emergence of advanced spectroscopic tools, kinetic approaches and DFT predictive models has allowed for a better understanding of catalytic systems, opening a range of new research opportunities during recent years.

This Special Issue has the objective of encompassing relevant studies in the field of catalysis, with particular emphasis on metal-based catalysts and a fundamental understanding of active sites and reaction mechanisms. The goal is to promote current knowledge about metal-based catalysts and new tools that can contribute to a better understanding of actual catalytic processes, promoting the design and development of new catalytic systems.

Potential topics in this Special Issue include, but are not limited to, the following:

  • Optimized catalyst design;
  • In situ or operando spectroscopy;
  • Catalyst restructuration and dynamic behavior;
  • Industry-relevant catalytic processes;
  • DFT and predictive models;
  • Kinetic studies and modeling.

Dr. Patricia Concepción Heydorn
Dr. Daviel Gómez Acosta
Guest Editors

Manuscript Submission Information

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Keywords

  • catalysis
  • metal-based catalysts
  • spectroscopy
  • DFT
  • modeling
  • kinetics

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Published Papers (1 paper)

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Research

21 pages, 6957 KiB  
Article
Impact of Metal Source Structure on the Electrocatalytic Properties of Polyacrylonitrile-Derived Co-N-Doped Oxygen Reduction Reaction Catalysts
by Arseniy Kalnin, Ksenia Kharisova, Daniil Lukyanov, Sofia Filippova, Ruopeng Li, Peixia Yang, Oleg Levin and Elena Alekseeva
Nanomaterials 2024, 14(23), 1924; https://doi.org/10.3390/nano14231924 - 29 Nov 2024
Cited by 1 | Viewed by 863
Abstract
The oxygen reduction reaction (ORR) plays a central role in energy conversion and storage technologies. A promising alternative to precious metal catalysts are non-precious metal doped carbons. Considerable efforts have been devoted to cobalt-doped carbonized polyacrylonitrile catalysts, but the optimization of their catalytic [...] Read more.
The oxygen reduction reaction (ORR) plays a central role in energy conversion and storage technologies. A promising alternative to precious metal catalysts are non-precious metal doped carbons. Considerable efforts have been devoted to cobalt-doped carbonized polyacrylonitrile catalysts, but the optimization of their catalytic performance remains a key challenge. We have proposed a multifunctional active metal source strategy based on the cobalt complex with the ligand containing pyridine and azo-fragments. This complex simultaneously provides the nitrogenous environment for the Co atoms and acts as a blowing agent due to N2 extrusion, thus increasing the surface area and porosity of the material. This strategy provided the catalysts with a high surface area and pore volume, combined with the greater fraction of Co-N clusters, and a lesser amount and smaller size of Co metal particles compared to conventionally prepared catalysts, resulting in improved catalytic performance. In addition to strict 4-electron ORR kinetics and 383 mV overpotential, the novel catalysts exhibit limiting current values close to the Pt/C benchmark and greatly overcome the Pt in methanol tolerance. These results demonstrate the critical role of metal source structure and carbonization parameters in tailoring the structural and electrochemical properties of the catalysts. Full article
(This article belongs to the Special Issue Advanced Understanding of Metal-Based Catalysts)
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