A new method to modify electrodes with carbon nanotubes (CNT) was developed. Multiwalled carbon nanotubes (MWNT) were adsorbed on the electrospun nylon-6 nanofibrous membranes (Ny-6-NFM) and used as a coating to modify conventional glassy carbon electrodes. The modified electrode was designed for the amperometric detection of sulfhydryl compounds with the potential held at +0.3 V vs. Ag/AgCl. The modified electrode showed a linear response for cysteine up to 0.4 mM (R2=0.997), with a sensitivity of 5.1 µA/mM and a detection limit of 15 µM. Other sulfhydryl compounds showed similar results. After use, the Ny-6-NFM was easily peeled off, leaving the bare electrode surface back to its original electrochemical behaviour. This is the first attempt to use a disposable membrane functionalized with MWNT for electroanalytical purposes.
Carbon nanotube-adsorbed electrospun nanofibrous membranes as coating for electrochemical sensors for sulfhydryl compounds / L. Fei, M.M. Scampicchio, S. Mannino. - In: ELECTROANALYSIS. - ISSN 1040-0397. - 23:8(2011 Aug), pp. 1773-1775.
|Titolo:||Carbon nanotube-adsorbed electrospun nanofibrous membranes as coating for electrochemical sensors for sulfhydryl compounds|
SCAMPICCHIO, MATTEO MARIO (Secondo)
MANNINO, SAVERIO (Ultimo)
|Parole Chiave:||Cyclic voltammetry (CV) ; Electrochemistry ; Electrospun nanofibrous membranes ; Carbon nanotubes (CNT) ; Sulfhydryl compounds|
|Settore Scientifico Disciplinare:||Settore AGR/15 - Scienze e Tecnologie Alimentari|
|Data di pubblicazione:||ago-2011|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1002/elan.201100068|
|Appare nelle tipologie:||01 - Articolo su periodico|