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Carbon Nanotube/Graphite Mixtures Used as Cavity Cell Macroelectrodes and their Unexpected Behavior Towards Benzyl Bromide Electroreduction
Author(s) -
Santos de Oliveira Luciana,
Navarro Marcelo,
Tavares Ribeiro Rogério,
Lago Falcão Eduardo Henrique
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700959
Subject(s) - graphite , cyclic voltammetry , carbon nanotube , bromide , toluene , benzyl bromide , materials science , electron transfer , carbon fibers , inorganic chemistry , yield (engineering) , chemical engineering , electrode , chemistry , electrochemistry , organic chemistry , catalysis , nanotechnology , metallurgy , composite material , composite number , engineering
Powder macroelectrodes were prepared by mixing carbon nanotubes (CNT) and graphite in different ratios, and evaluated as electron transfer medium for the benzyl bromide electroreduction. 1,2‐Diphenylethane (DPE) (1‐electron process) was favored, instead of toluene (2‐electron process), for all CNT:graphite mass ratios, while pure graphite or CNT favored toluene as major product. The 3:7 CNT:graphite mass ratio gave the best result, furnishing 70 % yield of DPE. Cyclic voltammetry showed a cathodic shift for the benzyl bromide reduction potential by using CNT:graphite electrode composition, favoring the 1‐electron process products during the electrolyses, and corroborating the results observed.