Fullerene Black: Structure, Properties and Possible Applications

This review concerns the fullerene black, a poorly known nano-sized carbon material, the insoluble recidue after extraction of fullerenes from fullerene soot produced by arc evaporation of carbon material (usually graphite) in a helium atmosphere. This by-product of the production of fullerenes, whose yield reaches 80 wt %, is a finely dispersed material with a particle size of 40–50 nm. It includes amorphous carbon, graphitized particles, and graphite. Test reactions showed the presence in the structure of fullerene black of curved surfaces, and, like fullerenes, of alternating non-conjugated simple and double bonds. In addition to the double bonds, its structure includes dangling bonds in the concentration not higher than one per 1200 carbon atoms. This nano-carbon can not be graphitized, enters into the reactions of nucleophilic addition, graphite) in a helium atmosphere. This by-product of the production of fullerenes, whose yield reaches 80 wt %, is a finely dispersed material with a particle size of 40–50 nm. It includes amorphous carbon, graphitized particles, and graphite. Test reactions showed the presence in the structure of fullerene black of curved surfaces, and, like fullerenes, of alternating non-conjugated simple and double bonds. In addition to the double bonds, its structure includes dangling bonds in the concentration not higher than one per 1200 carbon atoms. This nano-carbon can not be graphitized, enters into the reactions of nucleophilic reinforces their surface. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3505

Pt supported on reduced graphite oxide catalysts for H2 activation

Platinum catalysts of H2 activation with average size ≤2.0 nm were prepared in a base of reduction conversion of graphene oxide. A low few-layered carbon nanomaterial was prepared by thermoexpansion and annealing of graphene oxide. The uniformly dispersed Pt nanoparticles were supported on two-dimension graphene flat material by the use of pyridine or polyethyleneimine in alkaline (pH10) media as chelating agent modificating both metal precursor H2PtCl6 and support. Vacancies in carbon material formed as a result of thermoexpansion and annealing of graphite oxide probablly serve as anchor groups in platinum supporting. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3557

Platinum Nanoparticles Supported on Reduced Graphite Oxide as Hydrogenation Catalyst

Platinum nanoparticles supported on reduced graphite oxide are produced by reduction of a slurry including graphite oxide and H2PtCl6·xH2O, and pyridine as modifying agent. Four compounds as a formation formateion decene-1 and nitrobenzene hydrogenation at hydrogen atmospheric pressure and 45°C. In the result of reduction Pt4+ is converted to Pt metal and graphite oxide loses of oxygen. The symbasis Pt loading with C/O ratio is observed. Compositions Pt - reduced graphite oxide catalyze the hudrogenation of decene-1 and nitrobenzene in a solution. The greatest activity is shown composition reduced by sodium borohydride with the particle size of 2.0 nm, however it is substantially lower than it for Pt/fullerene black catalyst. Some inhibiton of hydrogenation by incompletely reduced graphite oxide is shown. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3505