Special Issue "Nanomaterials in Catalysis Applications"

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalytic Materials".

Deadline for manuscript submissions: 31 May 2020.

Special Issue Editors

Guest Editor
Prof. Dr. Ioannis V. Yentekakis Website E-Mail
Physical Chemistry and Chemical Processes Laboratory, School of Environmental Engineering, TECHNICAL UNIVERSITY OF CRETE (TUC), Greece
Interests: physical chemistry; heterogeneous catalysi s; environmental catalysis; catalyst promotion; chemical reaction engineering and thermodynamics; surfaces and interfaces; electrochemistry; fuel cells; nanomaterials and nanotechnology
Guest Editor
Prof. Michael A. Karakassides Website E-Mail
Department of Materials Science and Engineering, University of Ioannina, GR-45110 Ioannina, Greece
Interests: catalysis; nanomaterials and nanotechnology; ceramic; composite and porous materials; oxide glasses; hybrid materials; mesoporous and phyllomorphic materials based on silicon or carbon; clay based materials; photocatalytic materials; magnetic oxide nanoparticles and zero valence iron; activated carbon materials produced from biomass; structure and physicochemical properties of materials with vibrational spectroscopic techniques; thermal analysis; porosimetry
Guest Editor
Prof. Dr. Dimitrios Gournis Website E-Mail
Department of Materials Science and Engineering University of Ioannina GR-45110 Ioannina, Greece
Interests: catalysis; nanomaterials and nanotechnology; chemistry of phyllomorphous (2D) materials (in particular inorganic layered structures, clay-based materials (clays, pillared clays, organo-clays, LDHs), carbon layered structures, TMDs, germanane etc.); carbon nanostructures (carbon nanotubes, fullerenes, graphene, graphite oxide, carbon dots, molecular diamonds); hybrid organic–inorganic nanocomposites; mesoporous materials; metallic (magnetic or semiconducting) nanoparticles and biocatalysts

Special Issue Information

Dear Colleagues,

Great advances have been recorded in heterogeneous catalysis and/or electrocatalysis as a result of the ongoing progress in nanotechnology that provides efficient approaches and advanced methods for the design of nano-structured composite materials subjected to specific nanomorphologies and enhanced metal–metal and metal–support interactions. Surface-induced and/or support-mediated promotion of catalytic performance through metal–metal and metal–support interactions, as well as surface morphology (size/shape of catalyst nanoparticles), are issues that have a crucial role in determining and improving the efficiency and robustness of heterogeneous catalytic materials for specific applications. Fine-tuning of critical physicochemical properties of the materials, such as electron affinity (work function), oxidation state, and morphology of nanoparticles is therefore achieved, enabling catalytic activity, selectivity and time-on-stream stability optimization of the materials for reactions with high environmental and energy importance.

Apparently, heterogeneous catalysis and electrocatalysis played, play, and will continue to play a major role in industrial processes for large-scale synthesis of commodity chemicals of global importance and in catalytic systems that possess a critical role in energy generation and environmental protection approaches. Among others, such ecofriendly and cost-efficient applications involve, for example, deNOx, deN2O, and VOCs emissions control systems, waste treatment, photocatalytic, biorefinery, CO2 utilization and fuel cells applications, as well as hydrocarbons processing for H2, added-value chemicals and liquid fuels production.

The titled Special Issue aims to cover current experimental studies, in the field of nanomaterials synthesis, their characterization, and application in heterogeneous catalysis and/or electrocatalysis. Therefore, advanced synthesis routes, characterizations, catalytic and electrocatalytic activity/stability evaluation, and fundamental understanding of structure–activity relationships or possible metal–metal and metal–support interactions under desired reactions are very welcome.

Prof. Dr. Ioannis V. Yentekakis
Prof. Dr. Dimitrios Gournis
Prof. Dr. Michael A. Karakassides
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 papers will be 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. Catalysts is an international peer-reviewed open access monthly 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 1600 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

  • Heterogeneous catalysis and/or electrocatalysis
  • Nano-structured catalytic materials
  • Advanced synthesis routes
  • Structural textural physicochemical characterizations
  • Catalysts promotion
  • Metal–metal and metal–support interactions
  • Nanomaterials for energy applications
  • Nanomaterials for emissions control applications
  • Environmental catalysis applications
  • Nano-structured photocatalysts
  • Electrodes and fuel cells
  • Biocatalysis

Published Papers (1 paper)

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Research

Open AccessArticle
Oxidative Thermal Sintering and Redispersion of Rh Nanoparticles on Supports with High Oxygen Ion Lability
Catalysts 2019, 9(6), 541; https://doi.org/10.3390/catal9060541 - 17 Jun 2019
Abstract
The thermal sintering under oxidative conditions of Rh nanoparticles supported on oxides characterized by very different oxygen storage capacities (OSC) and labilities was studied at 750 and 850 °C. Under sintering conditions, significant particle growth occurred for Rh/γ-Al2O3 (up to [...] Read more.
The thermal sintering under oxidative conditions of Rh nanoparticles supported on oxides characterized by very different oxygen storage capacities (OSC) and labilities was studied at 750 and 850 °C. Under sintering conditions, significant particle growth occurred for Rh/γ-Al2O3 (up to 120% at 850 °C). In striking contrast, Rh/ACZ (alumina–ceria–zirconia) and Rh/CZ (ceria–zirconia) exhibited marked resistance to sintering, and even moderate (ca. −10% at 850 °C) to pronounced (ca. −60% at 850 °C) redispersion of the Rh. A model is proposed based on a double-layer description of metal–support interactions assigned to back-spillover of labile oxygen ions onto the Rh particles, accompanied by trapping of atomic Rh by the resulting surface oxygen vacancies. This model accounts for the observed resistance to sintering and actual redispersion of Rh, consistent with both alternative sintering mechanisms, namely Ostwald ripening (OR) or particle migration and coalescence (PMC). Full article
(This article belongs to the Special Issue Nanomaterials in Catalysis Applications)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

1. Title: Exsolved nanoparticle systems for CH4 conversion to syngas
Author: Kalliopi Kousi <[email protected]>
Abstract: Currently the main process for H2 and syngas production is the reformation of CH4, which however suffers from deactivation of the catalysts used via agglomeration and carbon deposition. Exsolution has been shown to be an approach to produce confined nanoparticles, which in turn are more stable against coalescence and coke deposition, and, at the same time strained, generally displaying enhanced activity. In this study, we design, prepare and tailor perovskite systems with exsolved nanoparticles and apply them for the reforming of CH4 to syngas. Detailed comparison with reference samples prepared by a conventional way of depositing particles on the surface of supports is presented, in terms of their resistance to coking, conversion and selectivity over syngas production

2. Title: “CO2 hydrogenation to methanol over La2O3-promoted Cu/Zn/Al catalysts: A kinetic and mechanistic study”.
Authors: M. Kourtelesis, T. Ramantani, K. Kousi, D.I. Kondarides

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