Deposition of Metals and Their Application in Catalytic Processes of Energy Interest (2nd Edition)

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metallic Functional Materials".

Deadline for manuscript submissions: 31 January 2025 | Viewed by 2049

Special Issue Editor


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Guest Editor
Faculty of Materials Metallurgy and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China
Interests: biofuels; electrocatalysis; hydrogen evolution
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Special Issue Information

Dear Colleagues,

Recently, supported metal nanocatalysts have received extensive attention from many researchers, and their catalytic performance can be tuned by changing the composition, morphology, crystal plane structure, and metal–oxide interface structure of metal nanoparticles. During the catalytic reaction, the existence of the interface plays a role in regulating the activity, selectivity, and stability of the reaction. Combining interfaces or active sites with different functions at the nanoscale can obtain multifunctional synergistic catalysts. However, it is difficult for traditional catalyst preparation methods to achieve fine control of the composition and microstructure of multi-interface catalysts. As a result, it is difficult to achieve precise matching of functional centers. This Special Issue focuses on how to precisely tune the composition and microstructure of catalysts via deposition synthesis and design a novel and efficient catalyst for energy conversion. This Special Issue also aims to provide an overview of recent advances in the synthesis of catalytic materials via deposition methods, such as single atoms, spherical and hetero-shaped nanoparticles, nanosheets, etc., as well as energy realization via traditional thermochemical conversion, photocatalysis, electrocatalysis, and photoelectrochemical catalysis transformation. This Special Issue is expected to promote the application of metal nanocatalysts in the energy field through precise synthesis, suitable modification, advanced characterization, and theoretical calculation.

  1. Rare earth catalytic materials;
  2. The development of rare earth metal structural materials;
  3. Thermoelectric materials;
  4. Rare earth energy materials;
  5. New organic/polymer electrode materials;
  6. Lithium-ion battery materials;
  7. Non-ferrous metal resource circulation and metallurgical secondary comprehensive utilization;
  8. Rare metal metallurgy;
  9. The comprehensive utilization of non-traditional resources;
  10. The multiphysics simulation of industrial process and strengthening energy saving;
  11. Rare earth luminescent materials;
  12. Rare earth-doped novel laser (scintillation) crystals.

Prof. Dr. Qing Shu
Guest Editor

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Keywords

  • catalytic material
  • deposition
  • nanostructure
  • biofuels
  • photocatalysis
  • electrocatalysis
  • photoelectro–chemical catalysis
  • hydrogen evolution

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Published Papers (2 papers)

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Research

16 pages, 4619 KiB  
Article
An Efficient and Stable MXene-Immobilized, Cobalt-Based Catalyst for Hydrogen Evolution Reaction
by Wei Guo, Buxiang Wang and Qing Shu
Metals 2024, 14(8), 922; https://doi.org/10.3390/met14080922 - 14 Aug 2024
Viewed by 706
Abstract
Hydrogen (H2) is considered to be the best carbon-free energy carrier that can replace fossil fuels because of its high energy density and the advantages of not producing greenhouse gases and air pollutants. As a green and sustainable method for hydrogen [...] Read more.
Hydrogen (H2) is considered to be the best carbon-free energy carrier that can replace fossil fuels because of its high energy density and the advantages of not producing greenhouse gases and air pollutants. As a green and sustainable method for hydrogen production, the electrochemical hydrogen evolution reaction (HER) has received widespread attention. Currently, it is a great challenge to prepare economically stable electrocatalysts for the HER using non-precious metals. In this study, a Co/Co3O4/Ti3C2Tx catalyst was synthesized by supporting Co/Co3O4 with Ti3C2Tx. The results show that Co/Co3O4/Ti3C2Tx has excellent HER activity and durability in 1 mol L−1 KOH, and the overpotential and Tafel slope at 10 mA·cm−2 were 87 mV and 61.90 mV dec−1, respectively. The excellent HER activity and stability of Co/Co3O4/Ti3C2Tx can be explained as follows: Ti3C2Tx provides a stable skeleton and a large number of attachment sites for Co/Co3O4, thus exposing more active sites; the unique two-dimensional structure of Ti3C2Tx provides an efficient conductive network for rapid electron transfer between the electrolyte and the catalyst during electrocatalysis; Co3O4 makes the Co/Co3O4/Ti3C2Tx catalyst more hydrophilic, which can accelerate the release rate of bubbles; Co/Co3O4 can accelerate the adsorption and deionization of H2O to synthesize H2. This study provides a new approach for the design and preparation of low-cost and high-performance HER catalysts. Full article
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16 pages, 1917 KiB  
Article
Thermodynamic Simulation Model of Copper Side-Blown Smelting Process
by Mingzhou Li, Yuchen Feng and Xinzhou Chen
Metals 2024, 14(8), 840; https://doi.org/10.3390/met14080840 - 23 Jul 2024
Viewed by 984
Abstract
In this study, the thermodynamic simulation model and system of the copper side-blown smelting process were established using the chemical equilibrium constant method, based on the process reaction mechanism, multiphase equilibrium principle, and MetCal software platform (MetCal v7.81). Under typical production conditions, the [...] Read more.
In this study, the thermodynamic simulation model and system of the copper side-blown smelting process were established using the chemical equilibrium constant method, based on the process reaction mechanism, multiphase equilibrium principle, and MetCal software platform (MetCal v7.81). Under typical production conditions, the composition of the product and the distribution behavior of impurity elements were simulated. The results indicate that the average relative error between the calculated mass fractions of major elements such as Cu, S, Fe, SiO2, CaO, MgO, and Al2O3 in copper matte and smelting slag, and the actual production values, is 4.25%. Additionally, the average relative error between the calculated distribution ratios of impurity elements such as Pb, Zn, As, Bi, Mo, Au, and Ag in copper matte and smelting slag, and the actual production data, is 6.74%. Therefore, this model and calculation system accurately reflects the actual production situation of the copper side-blown smelting process well and has potential to predict process output accurately while optimizing process parameters, effectively guiding production practice. Full article
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