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Synthesis and Application of Nano-Catalyst

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: closed (10 June 2024) | Viewed by 4186

Special Issue Editors


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Guest Editor
School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
Interests: functional organic porous materials; organic energy storage materials; organic functional catalysts

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Guest Editor
College of Energy Materials and Chemistry, Inner Mongolia University, Hohhot 010020, China
Interests: organic electrode materials; conjugated metal–organic polymers; sodium-ion and zinc-ion batteries

Special Issue Information

Dear Colleagues,

Nano-catalyst is an indispensable part of heterogeneous catalysis, which is widely used in energy storage, clean energy, environmental protection and the synthesis of new materials. The preparation of catalysts with high activity, selectivity and stability is an important application of nanotechnology in the field of catalysis. To improve activity, selectivity, and stability and to link the physico-chemical properties with catalytic behaviour, a lot of effort has been devoted to catalyst characterization, including in situ spectroscopy and imaging.

This Special Issue aims to encompass original scientific papers, short communications, and reviews on innovative approaches for nano-catalyst preparation without any restrictions regarding the types of catalysts (zeolites, supported metals, MOFS, clays, carbons, nanotubes, structured catalysts, immobilized homogeneous catalysts, nanoreactors, composites, membranes, thin films, etc.). Besides classical methods of preparation (hydrothermal synthesis, sol-gel methods, impregnation, precipitation, etc.), the editors also anticipate contributions addressing less conventional methods such as surfactant assisted preparations, mechanochemical or plasma activation, ALD, CVD, flame and combustion methods, application of ultrasound, etc.

Potential industrial implementation and requirements of large-scale catalyst production inevitably call for research on upscaling, shaping, and structuring, including extrusion, spray drying, tableting, high-throughput approaches, etc.

The editors especially welcome contributions in such emerging areas as numerical and theoretical approaches in catalyst preparation.

It is our pleasure to invite you to submit papers and reviews exploring the fascinating issue of heterogeneous catalyst preparation and characterization.

Dr. Mi Tang
Dr. Yuan Chen
Guest Editors

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Keywords

  • nanotechnology
  • synthesis and characterization of nano-catalyst
  • nano energy
  • storage batteries
  • nano-catalytic synthesis

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Published Papers (1 paper)

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Research

10 pages, 3897 KB  
Article
Fabricating Spinel-Type High-Entropy Oxides of (Co, Fe, Mn, Ni, Cr)3O4 for Efficient Oxygen Evolution Reaction
by Xiaofei Hao, Ran Wang, Xiumin Tan, Xiufeng Zhang, Xupo Liu, Zhaoyang Wu and Dongli Yuan
Materials 2024, 17(14), 3415; https://doi.org/10.3390/ma17143415 - 10 Jul 2024
Cited by 7 | Viewed by 3738
Abstract
Fabricating efficient oxygen evolution reaction (OER) electrocatalysts is crucial for water electrocatalysis. Herein, the spinel-type high-entropy oxides of (Co, Fe, Mn, Ni, Cr)3O4 were synthesized through the high-temperature calcination approach. The influences of calcination temperatures on structures and electrochemical properties [...] Read more.
Fabricating efficient oxygen evolution reaction (OER) electrocatalysts is crucial for water electrocatalysis. Herein, the spinel-type high-entropy oxides of (Co, Fe, Mn, Ni, Cr)3O4 were synthesized through the high-temperature calcination approach. The influences of calcination temperatures on structures and electrochemical properties were investigated. The optimized catalyst of HEO-900 contains the hybrid structure of regular polyhedrons and irregular nanoparticles, which is beneficial for the exposure of electrochemically active sites. It was identified that the abundant high-valence metal species of Ni3+, Co3+, Fe3+, Mn4+, and Cr3+ are formed during the OER process, which is generally regarded as the electrochemically active sites for OER. Because of the synergistic effect of multi-metal active sites, the optimized HEO-900 catalyst indicates excellent OER activity, which needs the overpotential of 366 mV to reach the current density of 10 mA cm−2. Moreover, HEO-900 reveals the prominent durability of running for 24 h at the current density of 10 mA cm−2 without clear delay. Therefore, this work supplies a promising route for preparing high-performance multi-metal OER electrocatalysts for water electrocatalysis application. Full article
(This article belongs to the Special Issue Synthesis and Application of Nano-Catalyst)
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