A facile “one-step” route to produce a homogenous and highly stable cobalt phthalocyanine (CoPc)-based dispersion by using carbon black (CB) as supporting material is reported. Herein, CB is proposed as effective material to load CoPc in order to obtain a CB/CoPc hybrid nanocomposite dispersion suitable for modifying screen-printed electrodes (SPEs) by an easy and automatable drop casting approach. CoPc resulted anchored to CB by a non-covalent physisorption, confirmed by IR and UV-visible spectroscopies, allowing to preserve the electrochemical performances of CoPc. The resulting CB/CoPc-modified SPE was tested as sensing tool to detect thiocholine, an enzymatic product of butyrylcholinesterase (BChE). The use of CB/CoPc leads to a highly sensitive thiocholine detection by applying a low potential (+0.05 V vs. internal reference) without fouling problem, a typical drawback that affects the thiol electrochemical detection. The favorable characteristics of the sensor were exploited for an easy BChE biosensor fabrication that renders this biosensor well suitable for mass-production. This electrochemical monoenzymatic biosensor was then challenged towards paraoxon, chosen as model organophosphorous pesticide, obtaining a low detection limit (18 nM). The suitability of the biosensor was tested in a waste water sample obtaining satisfactory recovery values, thus demonstrating its capability in such complex matrix.
Cinti, S., Neagu, D., Carbone, M., Cacciotti, I., Moscone, D., & Arduini, F. (2016). Novel carbon black-cobalt phthalocyanine nanocomposite as sensing platform to detect organophosphorus pollutants at screen-printed electrode. ELECTROCHIMICA ACTA, 188, 574-581.
|Tipologia:||Articolo su rivista|
|Citazione:||Cinti, S., Neagu, D., Carbone, M., Cacciotti, I., Moscone, D., & Arduini, F. (2016). Novel carbon black-cobalt phthalocyanine nanocomposite as sensing platform to detect organophosphorus pollutants at screen-printed electrode. ELECTROCHIMICA ACTA, 188, 574-581.|
|IF:||Con Impact Factor ISI|
|Settore Scientifico Disciplinare:||Settore CHIM/01 - Chimica Analitica|
Settore CHIM/03 - Chimica Generale e Inorganica
|Revisione (peer review):||Esperti anonimi|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.electacta.2015.11.069|
|Stato di pubblicazione:||Pubblicato|
|Data di pubblicazione:||2016|
|Titolo:||Novel carbon black-cobalt phthalocyanine nanocomposite as sensing platform to detect organophosphorus pollutants at screen-printed electrode|
|Autori:||Cinti, S; Neagu, D; Carbone, M; Cacciotti, I; Moscone, D; Arduini, F|
|Appare nelle tipologie:||01 - Articolo su rivista|