Aminobenzene sulfonic acid-functionalized carbon nanotubes on glassy carbon electrodes for probing traces of mercury(II)

Abstract

This work reports on a new electrochemical sensing strategy for quantitative monitoring of inorganic mercury(II) in contaminated water by immobilization of poly(p-aminobenzene sulfonic acid)-functionalized singlewalled carbon nanotubes on a glassy carbon electrode. The electrochemical behavior of the resulting sensor was assessed and optimized. Under optimal conditions, the sensor displayed good electrocatalytic responses to Hg 2+ reduction ranging from 1.0 μmol L -1 to 0.5 mmol L -1 with a detection limit of 0.5 μmol L -1 . The selectivity against other potentially interfering ions and the applicability in contaminated water samples were also evaluated.

A nanostructured suitable platform based on multi wall carbon nanotubes and graphene nano sheets composite for determination of mefenamic acid

“…27 Lv group developed a new electrochemical sensing strategy for the quantitative monitoring of inorganic mercury(II) in the contaminated water by the immobilization of poly(p-aminobenzene sulfonic acid)-functionalized single-walled car-bon nanotubes on a glassy carbon electrode. 28 Olana et al reported a new method for the determination of ascorbic acid (AA) based on a glassy carbon electrode (GCE) modified with a perforated film produced by reduction of diazonium generated in situ from p-phenylenediamine (PD) while holes were intentionally created in the modifier film by stripping pre-deposited gold nanoparticles. 29 Also, Benvidi group developed a nanostructure electrochemical sensor for the simultaneous determination of cysteine and tryptophan with a low detection limit and applicable in real samples.…”