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Multiwalled Carbon Nanotubes Resist Intercalation Whereas Pyrolytic Graphite Can Exfoliate in Propylene Carbonate: Electroanalysis Without the Deleterious Effects of Intercalation for the Detection of Ammonia
Author(s) -
Ji Xiaobo,
Banks Craig E.,
Hu Gang,
Crossley Alison,
Compton Richard G.
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603653
Subject(s) - intercalation (chemistry) , exfoliation joint , propylene carbonate , highly oriented pyrolytic graphite , materials science , graphite , electrolyte , graphene , carbon fibers , amperometry , inorganic chemistry , pyrolytic carbon , chemical engineering , ammonia , carbon nanotube , electrochemistry , electrode , nanotechnology , pyrolysis , chemistry , composite number , organic chemistry , composite material , engineering
Abstract A generic approach is presented allowing the sensing of electroactive species at carbon based electrodes in otherwise potentially intercalating media. Graphite electrodes are known to suffer intercalation leading to exfoliation in propylene carbonate solution containing tetra‐ n ‐butylammonium perchlorate as supporting electrolyte. However, we report contrasting behaviour at bamboo multiwalled carbon nanotubes, where intercalation/exfoliation does not occur, so allowing useful electroanalytical measurements to be made, in particular for the amperometric determination of ammonia.