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Ultrathin Carbon Nanotube Mat Electrodes for Enhanced Amperometric Detection
Author(s) -
Dumitrescu Ioana,
Edgeworth Jonathan P.,
Unwin Patrick R.,
Macpherson Julie V.
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200900402
Subject(s) - materials science , amperometry , carbon nanotube , electrode , electrochemistry , capacitance , nanotechnology , nanotube , redox , carbon fibers , chemical engineering , composite material , chemistry , composite number , engineering , metallurgy
A cCVD method for producing transparent , conducting carbon nanotube (CNT) mats of near complete surface coverage is described. Disk‐shaped UMEs using the CNT mats reveal reversible electrochemistry for outer sphere redox species and remarkably low capacitance. CNT mat UMEs can be used for the electrochemical detection of dopamine at micromole concentrations in albumin solution, with no decrease in electrode performance even after extensive use.