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Rational Design and Advanced Synthesis of Nanomaterials for Electrocatalysis

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: 31 March 2026 | Viewed by 421

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Guest Editor
Nanotechnology Engineering Program, Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering (COPPE), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro 21941-972, RJ, Brazil
Interests: nanocatalysts; supercapacitors; (electro)oxidation of alcohols; oxygen reduction reaction; hydrogenation reactions; hydroformylation; electrochemical sensors
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Special Issue Information

Dear Colleagues,

The development of nanomaterials through advanced synthetic strategies has emerged as a cornerstone in the pursuit of efficient and durable electrocatalysts for sustainable energy conversion technologies. By tailoring size, morphology, surface structure, and composition at the nanoscale, researchers can modulate the electronic properties and catalytic activity of materials, enabling enhanced performance in reactions such as the oxygen reduction (ORR), oxygen evolution (OER), hydrogen evolution (HER), and electrooxidation of small molecules. State-of-the-art approaches—including hydrothermal methods, solvothermal processes, atomic layer deposition, template-assisted growth, and defect engineering—allow precise control over structural features while promoting the formation of active sites and favorable reaction pathways. Furthermore, strategies such as doping, core–shell architectures, and the introduction of vacancies and strain effects expand the catalytic landscape, bridging fundamental design principles with practical applications. These advances not only improve reaction kinetics and catalyst stability but also reduce reliance on scarce noble metals. Collectively, the integration of innovative synthesis techniques with mechanistic insights leads the rational design of next-generation nanomaterials, offering scalable and cost-effective solutions for clean energy production and storage.

Dr. Marco Aurélio Suller Garcia
Guest Editor

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Keywords

  • nanocatalysts
  • supercapacitors
  • (electro)oxidation of alcohols
  • oxygen reduction reaction
  • hydrogenation reactions
  • hydroformylation
  • electrochemical sensors

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Published Papers (1 paper)

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Research

17 pages, 2783 KB  
Article
High-Temperature Synthesis of High-Entropy Alloy PtPd_CoNiCu Nanoparticles as a Catalyst for the Oxygen Reduction Reaction
by Alina Nevelskaya, Anna Gavrilova, Nikolay Lyanguzov, Mikhail Tolstunov, Ilya Pankov, Anna Kremneva, Evgeny Gerasimov, Andrey Kokhanov and Sergey Belenov
Int. J. Mol. Sci. 2025, 26(23), 11504; https://doi.org/10.3390/ijms262311504 - 27 Nov 2025
Viewed by 321
Abstract
The aim of this work was high-temperature synthesis of PtPdCoNiCu/C nanoparticles with high-entropy alloy (HEA) structure as catalysts for oxygen reduction reaction. The materials were synthesized using a highly dispersed PtPd/C support, which was impregnated with Cu, Ni, and Co precursors followed by [...] Read more.
The aim of this work was high-temperature synthesis of PtPdCoNiCu/C nanoparticles with high-entropy alloy (HEA) structure as catalysts for oxygen reduction reaction. The materials were synthesized using a highly dispersed PtPd/C support, which was impregnated with Cu, Ni, and Co precursors followed by their precipitation with an alkali. Subsequently, the material was subjected to thermal treatment in a tube furnace at 600 °C for 1 h in a stream of argon containing 5% hydrogen. In combination with HRTEM, element mapping and line scan, XRD, and XPS data, these results confirm the successful synthesis of five-component PtPdCoNiCu high-entropy alloy nanoparticles on the surface of the carbon support. The obtained materials are characterized by a high electrochemical surface area of up to 63 m2/g(PGM), as determined by hydrogen adsorption/desorption and CO-stripping, and a high specific oxygen reduction reaction (ORR) activity of approximately 269 A/g(PGM) at 0.9 V vs. RHE. The synthesized material demonstrated outstanding stability, as confirmed by an accelerated stress test of 10,000 cycles. After the test, the electrochemical surface area decreased by only 12%, while the catalytic activity for ORR even increased. The proposed synthetic strategy opens a new pathway for obtaining promising highly stable five-component HEA nanoparticles of various compositions for application in catalysts. Full article
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