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Nanocarbon composite materials from natural precursors

AuthorsWicklein, Bernd ; Darder, Margarita ; Aranda, Pilar ; Ruiz-Hitzky, Eduardo
Issue Date2017
CitationBaltic Polymer Symposium (2017)
AbstractNano-sized and nanostructured carbon allotropes are ubiquitous in advanced applications ranging from catalysis to batteries, supercapacitors, biomedicine, etc. Paradigmatic nanocarbons for these applications are carbon nanotubes, graphene and fullerenes including their modifications. However, these nanocarbons are generally produced from petro-derived precursors or natural graphite. Therefore, ‘green’ alternatives are sought not only for their production but also for the hybridization with other functional components. The Nanostructured Hybrid, Biohybrid and Porous Materials Group (http://www.icmm.csic.es/phbhmg/) has developed various synthetic routes for the environmentally benign production of these materials by microwave-assisted and sonochemical synthesis as well as low temperature carboreduction of natural carbon precursors like gelatin, bacterial cellulose or sucrose. These routes include the presence of inorganic nanoparticles like clays, silica or transition metal hydroxides that have a crucial role in the synthesis of the graphene-like materials. Our investigations have shown that these inorganic components promote the graphitization of the biopolymers, while getting integrated as functional component in the as synthesized carbon material. Clay supported graphene materials, carbon-silica foams or metal-carbon aerogels are only some examples of the nanocomposite and hybrid materials produced in this way. These materials were successfully applied in various applications like hydrogen storage, as electrodes in Li ion batteries and supercapacitors, as piezo elements in mechanical pressure sensors, or for electrochemically regenerated adsorbents of aromatic pollutants. Currently, investigation is focused on the incorporation of graphene nanoplatelets into functional hybrid materials assisted by an unique dispersion effect of the microfibrous clay sepiolite.
DescriptionOral presentation given at the Baltic Polymer Symposium, held in Tallinn (Estonia) on September 20-22th, 2017.
Appears in Collections:(ICMM) Comunicaciones congresos
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