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Emerging Carbon Nano-Onions and Related Materials: Preparation, Characterization and Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (10 October 2021) | Viewed by 6462

Special Issue Editor


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Guest Editor
Department of Chemical Engineering, Rovira i Virgili University, 43007 Tarragona, Spain
Interests: carbon nanomaterials; cyclodextrins; synthesis; self-assembly; electroanalysis; biosensors; supramolecular; chemistry

Special Issue Information

Dear Colleagues,

Nanostructured carbon materials have been the focus of intense research in the last decades. Multi-shell fullerenes, also known as carbon nano-onions (CNOs) or onion-like carbons, were discovered in 1992 and are structured in concentric layers of carbon atoms. They are perhaps the least studied of all carbon allotropes but because of their unique physical and chemical properties, they have received extensive attention in the last years.

Current research has identified potential applications of CNOs, onion-like carbons, carbon dots and other multilayered carbon nanostructures in supercapacitors, photovoltaics, electrocatalysis, drug delivery, (bio)sensors, bioimaging, just to cite some of them

This special issue aims at disseminating the latest scientific and technological developments related with the preparation, modification, properties and applications of CNOs and multilayered carbon nanoforms in general. We invite researchers and investigators from all over the world to contribute their original research or review articles to this special issue and encourage, in particular, the participation of young researchers in this emerging and attractive field.

Prof. Dr. Alex Fragoso
Guest Editor


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Keywords

  • Carbon nano-onions
  • Onion-like carbons
  • Carbon dots
  • Carbon nanotubes
  • Multilayered carbon nanostructures
  • Energy storage
  • Supercapacitors
  • Photovoltaics
  • Bioanalysis
  • Bioimaging
  • Electrocatalysis
  • Electrochemistry
  • Composites

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Published Papers (2 papers)

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Research

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13 pages, 7055 KiB  
Article
Carbon Nano-Onion Peroxidase Composite Biosensor for Electrochemical Detection of 2,4-D and 2,4,5-T
by Vibol Sok and Alex Fragoso
Appl. Sci. 2021, 11(15), 6889; https://doi.org/10.3390/app11156889 - 27 Jul 2021
Cited by 13 | Viewed by 2120
Abstract
Carbon nano-onions are emerging electrode materials in biosensing due to their high conductivity and biocompatibility. Phenoxy-based herbicides are a source of environmental contamination that can be detected using their property to inhibit the activity of some enzymes. Here we report a biosensor based [...] Read more.
Carbon nano-onions are emerging electrode materials in biosensing due to their high conductivity and biocompatibility. Phenoxy-based herbicides are a source of environmental contamination that can be detected using their property to inhibit the activity of some enzymes. Here we report a biosensor based on peroxidase immobilized on carbon nano-onions in a cyclodextrin polymer matrix for the amperometric detection of 2,4-D and 2,4,5-T. The inhibition mechanism of 2,4-D and 2,4,5-T on peroxidase activity was first elucidated by activity measurements and molecular docking. The biosensor was characterized by electrochemical and microscopy methods and applied to the amperometric detection of these herbicides. The incorporation of carbon nano-onions enhanced the sensitivity of the biosensor and improved its stability and repeatability. The application of the developed biosensor to the detection of 2,4-D in soil and 2,4,5-T in river water samples is also reported. Full article
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Review

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20 pages, 1651 KiB  
Review
Biocompatible Dispersants for Carbon Nanomaterials
by Hugh Mohan, Michał Bartkowski and Silvia Giordani
Appl. Sci. 2021, 11(22), 10565; https://doi.org/10.3390/app112210565 - 10 Nov 2021
Cited by 6 | Viewed by 3524
Abstract
Carbon nanomaterials (CNMs) are a fascinating class of materials that have gained considerable interest in recent years. Their favourable biocompatibility, combined with unique chemical and mechanical properties, has attracted scientists from various disciplines. A significant hurdle in their deployment in biomedical applications is [...] Read more.
Carbon nanomaterials (CNMs) are a fascinating class of materials that have gained considerable interest in recent years. Their favourable biocompatibility, combined with unique chemical and mechanical properties, has attracted scientists from various disciplines. A significant hurdle in their deployment in biomedical applications is their hydrophobicity in their pristine form. This review surveys and discusses existing non-covalent methods of functionalising CNMs with biocompatible dispersants to facilitate their incorporation into aqueous solutions. Different types of dispersants will be examined and compared as well as the factors affecting their efficiency. This work seeks to provide a compilation of the various methods employed in producing biocompatible CNM dispersions. Full article
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