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Catalysts: Performance Simulation and Structure Design for Environment Purpose

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

Deadline for manuscript submissions: closed (10 September 2023) | Viewed by 1361

Special Issue Editors


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Guest Editor
REQUIMTE/LAQV, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
Interests: carbon based materials; degradation of emerging and persistent pollutants; biomass valorisation; photo-catalysis; (photo)Fenton processes
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
REQUIMTE/LAQV, Department of Chemistry and Biochemistry, Faculty of Science, University of Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
Interests: chemistry of confined spaces; heterogeneous catalysis; computational chemistry methods

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Guest Editor
REQUIMTE/LAQV, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
Interests: materials chemistry; environment-related catalysis; electrocatalysis; photocatalysis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The growth of the world’s population and worldwide industry has tremendous impact on the environment. The improvement of water treatment technologies is key when facing current water quality challenges, the ultimate one for drinking water treatment and water reuse being related to the presence of natural organic matter and micropollutants, the latter often related to dyes, pharmaceutical compounds, etc. In this context, the quest for novel advanced technologies to ensure a safe and sustainable water supply is growing at accelerating speed, having become one of the greatest global challenges of the 21st century. The removal of pollutants from wastewater is usually achieved by oxidative degradation, but chemical reduction is an important process, especially when the products are of interest in the context of the circular economy (value-added products). Heterogeneous catalysis (easy reuse) and photocatalysis (solar energy) have been extensively applied in solving these problems. In recent decades, computational chemistry has become a widespread tool, particularly useful for complementing experimental data. Nowadays, a wide diversity of theoretical methods, ranging from classical simulations to high-level quantum techniques, can be successfully applied to provide valuable insight into the chemical behavior of complex systems at an atomic scale. The macroscopic properties can, thus, be interpreted at the molecular level, facilitating the process of optimizing the conditions of catalytic reactions and of physical and chemical processes in general.

This Special Issue welcomes original contributions based on experimental and/or computational techniques, with the aim of covering the most recent research progress in environmental catalyst aspects regarding the application of novel materials (nanoparticles, composites, hybrids, etc.) in environmental catalysis, including photocatalysis, electrocatalysis, (photo)Fenton and other processes.

Dr. Iwona Kuźniarska-Biernacka
Dr. Alexandre Lopes Magalhães
Dr. Marta Susete da Silva Nunes
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • environmental catalysis
  • heterogeneous catalysis
  • (nano)catalysts
  • photo/electro-catalysts
  • (photo)Fenton processes
  • composites/hybrids materials
  • semiconductors
  • water treatment
  • hazard pollutants
  • emerging pollutants
  • theoretical simulation
  • computational chemistry

Published Papers (1 paper)

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Research

18 pages, 2229 KiB  
Article
CO2 Methanation: Solvent-Free Synthesis of Nickel-Containing Catalysts from Complexes with Ethylenediamine
by Olga V. Netskina, Kirill A. Dmitruk, Olga I. Mazina, Alexander A. Paletsky, Svetlana A. Mukha, Igor P. Prosvirin, Alena A. Pochtar, Olga A. Bulavchenko, Andrey G. Shmakov, Janna V. Veselovskaya and Oxana V. Komova
Materials 2023, 16(7), 2616; https://doi.org/10.3390/ma16072616 - 25 Mar 2023
Viewed by 1061
Abstract
CO2 methanation was studied in the presence of nickel catalysts obtained by the solid-state combustion method. Complexes with a varying number of ethylenediamine molecules in the coordination sphere of nickel were chosen as the precursors of the active component of the catalysts. [...] Read more.
CO2 methanation was studied in the presence of nickel catalysts obtained by the solid-state combustion method. Complexes with a varying number of ethylenediamine molecules in the coordination sphere of nickel were chosen as the precursors of the active component of the catalysts. Their synthesis was carried out without the use of solvents, which made it possible to avoid the stages of their separation from the solution and the utilization of waste liquids. The composition and structure of the synthesized complexes were confirmed by elemental analysis, IR spectroscopy, powder XRD and XPS methods. It was determined that their thermal decomposition in the combustion wave proceeds in multiple stages with the formation of NiO and Ni(OH)2, which are reduced to Ni0. Higher ethylenediamine content in the complex leads to a higher content of metal in the solid products of combustion. However, different ratios of oxidized and reduced forms of nickel do not affect the initial activation temperature of nickel catalysts in the presence of CO2. It was noted that, after activation, the sample obtained from [Ni(C2H8N2)2](NO3)2 exhibited the highest activity in CO2 methanation. Thus, this complex is a promising precursor for CO2 methanation catalysts, and its synthesis requires only a small amount of ethylenediamine. Full article
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