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Nanomaterials
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Application of Carbon Nanomaterials in Catalysis
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Application of Carbon Nanomaterials in Catalysis

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (31 July 2021) | Viewed by 8100

Special Issue Editor

Dr. Jesús Álvarez Rodríguez

E-Mail Website
Guest Editor
Inorganic Chemistry and Technical Chemistry Faculty of Sciences, UNED C/Senda del Rey, 928040 Madrid, Spain
Interests: valorization of biomass resources by catalytic process with carbon materials; structural design of catalysts; carbon materials and nanotechnology

Special Issue Information

Dear Colleagues,

Over the last few decades, the carbon nanomaterials scientific community has been growing quickly due to the successive discoveries and developments which have shifted the focus from fullerenes to, first, the carbon nanotubes age, then to graphene and graphene-like materials, afterwards diamond-like xerogels and doped carbon materials and on to the next carbon revolution. This has provide an avalanche of exciting scientific works affording basic knowledge about nanocarbon porosity and carbon layer dimensional measurement,  graphitic planes constitution and modification, and angle-layer overlapping. These developments have opened a huge space in the characterization of materials, thereby facilitating the next step in the evolution of the field: the application and development of businesses taking advantage of the electronic, mechanical, energy storage, and thermal properties in fields as diverse as medicine, super capacitators, water treatment, composite, or metallurgy industries.

This Special Issue will focus on research papers on the application of some of these carbon nanomaterials (pure, composite, hybrid materials either doped or surface) tailored with the aim of showing evidence of the higher chemical, mechanical, electrical, magnetic, and thermal properties that rise to the challenges posed by the next catalytic industrial revolution supported by the nanostructural nature.

We invite you to contribute full papers, reviews, or communications to this Special Issue. In all cases, the papers must demonstrate novelty and relevance to the scope.

Dr. Jesús Álvarez Rodríguez
Guest Editor

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

  • carbocatalysis
  • carbon nanotubes
  • xerogels
  • hybrid
  • carbon nanomaterials composite
  • nanostructured catalysts

Published Papers (3 papers)

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Research

13 pages, 2943 KiB  
Article
Development of Highly Efficient, Glassy Carbon Foam Supported, Palladium Catalysts for Hydrogenation of Nitrobenzene
by Ádám Prekob, Mahitha Udayakumar, Gábor Karacs, Ferenc Kristály, Gábor Muránszky, Anett Katalin Leskó, Zoltán Németh, Béla Viskolcz and László Vanyorek
Nanomaterials 2021, 11(5), 1172; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11051172 - 29 Apr 2021
Cited by 3 | Viewed by 2109
Abstract
Glassy carbon foam (GCF) catalyst supports were synthesized from waste polyurethane elastomers by impregnating them in sucrose solution followed by pyrolysis and activation (AC) using N2 and CO2 gas. The palladium nanoparticles were formed from Pd(NO3)2. The [...] Read more.
Glassy carbon foam (GCF) catalyst supports were synthesized from waste polyurethane elastomers by impregnating them in sucrose solution followed by pyrolysis and activation (AC) using N2 and CO2 gas. The palladium nanoparticles were formed from Pd(NO3)2. The formed palladium nanoparticles are highly dispersive because the mean diameters are 8.0 ± 4.3 (Pd/GCF), 7.6 ± 4.2 (Pd/GCF-AC1) and 4.4 ± 1.6 nm (Pd/GCF-AC2). Oxidative post-treatment by CO2 of the supports resulted in the formation of hydroxyl groups on the GCF surfaces, leading to a decrease in zeta potential. The decreased zeta potential increased the wettability of the GCF supports. This, and the interactions between –OH groups and Pd ions, decreased the particle size of palladium. The catalysts were tested in the hydrogenation of nitrobenzene. The non-treated, glassy-carbon-supported catalyst (Pd/GCF) resulted in a 99.2% aniline yield at 293 K and 50 bar hydrogen pressure, but the reaction was slightly slower than other catalysts. The catalysts on the post-treated (activated) supports showed higher catalytic activity and the rate of hydrogenation was higher. The maximum attained aniline selectivities were 99.0% (Pd/GCF-AC1) at 293 K and 98.0% (Pd/GCF-AC2) at 323 K. Full article
(This article belongs to the Special Issue Application of Carbon Nanomaterials in Catalysis)
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15 pages, 14644 KiB  
Article
First Phenol Carboxylation with CO2 on Carbon Nanostructured C@Fe-Al2O3 Hybrids in Aqueous Media under Mild Conditions
by Feliciano Calvo-Castañera, Jesús Álvarez-Rodríguez, Nuria Candela and Ángel Maroto-Valiente
Nanomaterials 2021, 11(1), 190; https://0-doi-org.brum.beds.ac.uk/10.3390/nano11010190 - 13 Jan 2021
Cited by 7 | Viewed by 2436
Abstract
Novel hybrid materials with integrated catalytic properties and hydrophobic response, C@Fe–Al2O3 hybrid samples, were presented and tested as catalysts for phenol reaction in aqueous solutions at atmospheric pressure and mild temperature conditions, using CO2 as a feedstock. A series [...] Read more.
Novel hybrid materials with integrated catalytic properties and hydrophobic response, C@Fe–Al2O3 hybrid samples, were presented and tested as catalysts for phenol reaction in aqueous solutions at atmospheric pressure and mild temperature conditions, using CO2 as a feedstock. A series of carbon-coated γ-alumina pellets (C@Fe–Al2O3) were synthesized and characterized by TGA, Brunauer–Emmett–Teller (BET) method, Raman spectroscopy, SEM, TEM, and XPS in order to get comprehensive knowledge of their properties at the nanoscale and relate them with their catalytic behavior. The results obtained correlated their catalytic activities with their carbon surface compositions. The application of these materials as active catalysts in the Kolbe–Schmitt reaction for CO2 conversion in aqueous media was proposed as an alternative reaction for the valorization of exhausts industrial effluents. In these early tests, the highest conversion of phenol was observed for the hybrid samples with the highest graphitic characteristic and the most hydrophobic behavior. Carboxylation products such as benzoic acid, p-hydroxybenzoic acid, and salicylic acid, have been identified under these experimental conditions. Full article
(This article belongs to the Special Issue Application of Carbon Nanomaterials in Catalysis)
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18 pages, 4487 KiB  
Article
Fe-Cu Doped Multiwalled Carbon Nanotubes for Fenton-like Degradation of Paracetamol Under Mild Conditions
by Niurka Barrios-Bermúdez, Marta González-Avendaño, Isabel Lado-Touriño, Arisbel Cerpa-Naranjo and María Luisa Rojas-Cervantes
Nanomaterials 2020, 10(4), 749; https://0-doi-org.brum.beds.ac.uk/10.3390/nano10040749 - 14 Apr 2020
Cited by 19 | Viewed by 2902
Abstract
A series of carbon nanotubes doped with Fe and/or Cu, Fe100−xCux/CNT (x = 0, 25, 50, 75 and 100) has been prepared by an easy method of wetness impregnation of commercial multiwalled carbon nanotubes previously oxidized with nitric acid. [...] Read more.
A series of carbon nanotubes doped with Fe and/or Cu, Fe100−xCux/CNT (x = 0, 25, 50, 75 and 100) has been prepared by an easy method of wetness impregnation of commercial multiwalled carbon nanotubes previously oxidized with nitric acid. The wide characterization of the solids by different techniques demonstrates that the incorporation of Fe and Cu to the CNTs has been successfully produced. Fe100−xCux/CNT samples were tested as catalysts in the removal of paracetamol from aqueous solution by a combined process of adsorption and Fenton-like oxidation. Under mild conditions, 25 °C and natural pH of solution, i.e., nearly neutral, values of oxidation of paracetamol between 90.2% and 98.3% were achieved after 5 h of reaction in most of cases. Furthermore, with the samples containing higher amounts of copper, i.e., Cu100/CNT and Fe25Cu75/CNT, only 2 h were necessary to produce depletion values of 73.2% and 87.8%, respectively. The influence of pH and dosage of H2O2 on the performance has also been studied. A synergic effect between both Cu+/Cu2+ and Fe2+/Fe3+ in Fenton-like reaction was observed. These results demonstrate that Fe100−xCux/CNT are powerful Fenton-like catalyst for degradation of paracetamol from aqueous solution and they could be extended to the removal of other organic pollutants. Full article
(This article belongs to the Special Issue Application of Carbon Nanomaterials in Catalysis)
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