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Nanomaterials
Special Issues
Nanocatalysis for Environmental Protection, Energy, and Green Chemistry, Volume II
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Nanocatalysis for Environmental Protection, Energy, and Green Chemistry, Volume II

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Environmental Nanoscience and Nanotechnology".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 1862

Special Issue Editors

Prof. Dr. Ioannis Yentekakis

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Guest Editor
1. Laboratory of Physical Chemistry and Chemical Processes, School of Chemical and Environmental Engineering, Technical University of Crete (TUC), 73100 Chania, Greece
2. Institute of GeoEnergy/Foundation for Research and Technology-Hellas (IG/FORTH), 73100 Chania, Greece
Interests: nanomaterials and nanotechnology; heterogeneous nano-catalysis; environmental catalysis (NOx, N2O; CO, CH4, VOCs, H2S and SO2 emissions control); catalysts’ promotion; electrochemical promotion; surfaces and interfaces; electrochemistry; fuel cells; CO2 utilization; biogas and natural gas processing and valorization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dimitrios Gournis

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Guest Editor
Laboratory of Physical Chemistry and Chemical Processes, School of Chemical and Environmental Engineering, Technical University of Crete (TUC), 73100 Chania, 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 Issues, Collections and Topics in MDPI journals
Dr. Paraskevi Panagiotopoulou

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Guest Editor
School of Environmental Engineering, Technical University of Crete, GR-73100 Chania, Greece
Interests: methane production; catalyst; synthesis gas; hydrogen production; steam reforming; WGS reaction
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Prof. Dr. Haralambos Stamatis

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Guest Editor
Department of Biological Applications and Technology, University of Ioannina, 45110 Ioannina, Grecee
Interests: nanobiocatalysts; bionanoassemblies; bionanodevices; “green” biocatalytic processes; enzymatic and microbial biotransformations
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Currently, nanoscience and nanotechnology represent cutting-edge areas of ​​modern science and technology across an array of applications. The design of nanocatalysts is now considered “one way” in modern heterogeneous catalysis. The rational design of nanostructured catalysts provides materials characterized by well-tailored activity/selectivity/stability in applications related to environmental protection and remediation, circular economy, sustainability, and green energy technologies, as well as green chemical production.

MDPI’s journal Nanomaterials has been established at the top of the list of highly regarded journals in the field to serve as a platform for innovative results and ideas to stimulate and discuss scientific research on the topics and related fields highlighted below, providing high readership and reliability.

This Special Issue, entitled “Nanocatalysis for Environmental Protection, Energy and Green Chemistry”, aims to host significant advances in the aforementioned areas, including, but not limited to, the design, synthesis, and characterization of nano-catalysts for:

  • Greenhouse gas abatement: CO2 capture, sequestration, and utilization (CO2 recycling into methane and renewable fuels, power-to-gas technology); N2O abatement; CH4;
  • Clean energy topics: H2 production and cleaning of the produced gas stream (CH4, biogas and hydrocarbon reforming, water–gas shift reaction, preferential CO oxidation reaction, etc.); fuel cells;
  • Photo-electro-chemical wastewater and water treatment; photo-electro-chemical CO2 reduction; electrochemical water splitting;
  • Emission control catalysis: De-(NOx, CH4, VOCs, H2S, CO, soot);
  • Green chemical production;
  • Nanobiocatalysts, bionanoassemblies and bionanodevices and their application in biocatalytic processes, drug delivery and biosensing;
  • Production of high-value products and biofuels by microbial cultures and microalgae;
  • Carbon nanostructures for energy, environmental and biomedical applications.

Prof. Dr. Ioannis Yentekakis
Prof. Dr. Dimitrios Gournis
Dr. Paraskevi Panagiotopoulou
Prof. Dr. Haralambos Stamatis
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. Nanomaterials 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 2900 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

  • carbon dioxide capture and utilization
  • nanomaterials and nanocatalysis
  • biogas and natural gas valorization
  • catalytic pollutants emission control
  • fuel cells science and technology
  • hydrogen energy
  • water electrolysis
  • green chemical production
  • nanobiocatalysts, bio-nanoassemblies and bio-nanodevices

Related Special Issue

Published Papers (2 papers)

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20 pages, 5164 KiB  
Article
Novel Nanostructured Pd/Co-Alumina Materials for the Catalytic Oxidation of Atmospheric Pollutants
by Eleni F. Iliopoulou, Eleni Pachatouridou and Angelos A. Lappas
Nanomaterials 2024, 14(1), 124; https://doi.org/10.3390/nano14010124 - 04 Jan 2024
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Abstract
Cobalt-doped alumina catalysts were prepared using different methods, either conventional wet impregnation (WI) and/or advanced spray impregnation (SI), and they were evaluated as novel oxidation catalysts for CO and MeOH oxidation. The spray impregnation technique was used with the aim of achieving the [...] Read more.
Cobalt-doped alumina catalysts were prepared using different methods, either conventional wet impregnation (WI) and/or advanced spray impregnation (SI), and they were evaluated as novel oxidation catalysts for CO and MeOH oxidation. The spray impregnation technique was used with the aim of achieving the synthesis of core–shell catalytic nanostructures to secure the chemical/thermal stability of active sites on the catalyst carrier. The catalysts were further promoted with a low Pd content (0.5 wt.%) incorporated via either incipient wetness impregnation (DI) or spray impregnation. The results revealed the superior performance of the spray-impregnated catalysts (Co/γ-Al2O3-SI) for both reactions. The deposition of Co oxide on the outer surface of the alumina particle (SEM images) and the availability of the active Co phase resulted in the enhancement of the Co/γ-Al2O3 catalysts’ oxidation activity. Pd incorporation increased the catalysts’ reducibility (TPR-H2) and improved the catalysts’ performance for both reactions. However, the Pd incorporation method affected the catalytic performance; with the SI method, the active phase of Co3O4 was probably covered with PdO and was not available for the oxidation reactions. On the contrary, the incorporation of Pd with the DI method resulted in a better dispersion of PdO all over the Co/Al catalyst surface, maintaining available Co active sites and a better Pd-Co interaction. MeOH desorption studies revealed the methanol oxidation mechanism: the Co/Al catalysts promoted the partial oxidation of MeOH to formaldehyde (HCHO) and dehydration to dimethyl ether (DME), while the Pd-based Co/Al catalysts enhanced the complete oxidation of methanol to CO2 and H2O. Full article
(This article belongs to the Special Issue Nanocatalysis for Environmental Protection, Energy, and Green Chemistry, Volume II)
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25 pages, 2829 KiB  
Article
Propylene Production via Oxidative Dehydrogenation of Propane with Carbon Dioxide over Composite MxOy-TiO2 Catalysts
by Alexandra Florou, Georgios Bampos, Panagiota D. Natsi, Aliki Kokka and Paraskevi Panagiotopoulou
Nanomaterials 2024, 14(1), 86; https://doi.org/10.3390/nano14010086 - 28 Dec 2023
Viewed by 981
Abstract
The CO2-assisted oxidative dehydrogenation of propane (ODP) was investigated over titania based composite metal oxides, 10% MxOy-TiO2 (M: Zr, Ce, Ca, Cr, Ga). It was found that the surface basicity of composite metal oxides was significantly [...] Read more.
The CO2-assisted oxidative dehydrogenation of propane (ODP) was investigated over titania based composite metal oxides, 10% MxOy-TiO2 (M: Zr, Ce, Ca, Cr, Ga). It was found that the surface basicity of composite metal oxides was significantly higher than that of bare TiO2 and varied in a manner which depended strongly on the nature of the MxOy modifier. The addition of metal oxides on the TiO2 surface resulted in a significant improvement of catalytic performance induced by a synergetic interaction between MxOy and TiO2 support. Propane conversion and propylene yield were strongly influenced by the nature of the metal oxide additive and were found to be superior for the Cr2O3-TiO2 and Ga2O3-TiO2 catalysts characterized by moderate basicity. The reducibility of the latter catalysts was significantly increased, contributing to the improved catalytic performance. This was also the case for the surface acidity of Ga2O3-TiO2 which was found to be higher compared with Cr2O3-TiO2 and TiO2. A general trend was observed whereby catalytic performance increased significantly with decreasing the primary crystallite size of TiO2. DRIFTS studies conducted under reaction conditions showed that the adsorption/activation of CO2 was favored on the surface of composite metal oxides. This may be induced by the improved surface basicity observed with the MxOy addition on the TiO2 surface. The Ga2O3 containing sample exhibited sufficient stability for about 30 h on stream, indicating that it is suitable for the production of propylene through ODP with CO2 reaction. Full article
(This article belongs to the Special Issue Nanocatalysis for Environmental Protection, Energy, and Green Chemistry, Volume II)
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