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β‐cyclodextrin functionalized graphene nano platelets for electrochemical determination of triclosan
Author(s) -
Li Beibei,
Qiu Zhipeng,
Wan Qijin,
Liu Yi,
Yang Nianjun
Publication year - 2014
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201431540
Subject(s) - graphene , triclosan , electrode , detection limit , differential pulse voltammetry , materials science , scanning electron microscope , electrochemical gas sensor , cyclic voltammetry , electrochemistry , analytical chemistry (journal) , chemical engineering , nanotechnology , chemistry , chromatography , composite material , medicine , pathology , engineering
β‐cyclodextrin (β‐CD) and graphene nano platelets (GNPs) have been applied to construct the β‐CD/GNP coated electrode and further for the determination of triclosan. The surface properties of β‐CD/GNP coated electrodes were characterized with scanning electron microscopy (SEM) and electrochemical techniques. On such an electrode, the oxidation peak current of triclosan is three‐times higher than that on the GNP coated electrode and seven‐times higher than that on a bare glassy carbon electrode. By applying differential pulse voltammetry, the monitoring of tricosan in the range of 2.0 µM to 100 µM was realized. The detection limit was 0.6 µM. The β‐CD and GNPs based sensor shows high sensitivity, wide dynamic response range, and long stability towards the detection of triclosan. This simple and sensitive electrochemical sensor is thus promising for the environmental monitoring of triclosan in future.