期刊
ELECTROANALYSIS
卷 26, 期 3, 页码 507-512出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201300578
关键词
Hybrid electrodes; Carbon nanotubes; Cobalt phthalocyanine; Pyrrole surfactant; Electrocatalysis
资金
- Fondecyt [1100773, 1120164]
- Millenium Nucleus of Molecular Engineering for Catalysis and Biosensors
- Dicyt USACH
- CNRS-CONACYT (PICS France/Chile) [5738]
Our aim was to prepare hybrid electrodes active towards the electrooxidation of thiols by the co-immobilization of native carbon nanotubes (CNTs) and cobalt phthalocyanine (CoPc) from aqueous solutions. This strategy was adopted to avoid the oxidation of CNTs that can induce a modification of their exceptional properties. To do so, a hydrosoluble pyrrole surfactant was used to get homogeneous aqueous dispersions of CNTs and CoPc and to trap both materials on the electrode via the electropolymerization of the pyrrole surfactant. The hybrid electrodes exhibit a good electrocatalytic activity towards the oxidation of L-cysteine and glutathione. Their performances in terms of limit of detection (0.01mM) are compatible with the detection of these thiols in biological samples.
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