Electrochemical study of 1,4-benzoquinone on gold surface modified

Gold surface cleaning by etching polishing: Optimization of polycrystalline film topography and surface functionality for biosensing

“…Complementary information can be derived on the effect of etching on the gold surface using cyclic voltammetry (CV) electrochemical measurements [85]. CV measurements quantify the electrochemical accessibility of the surface and provide indications about the prominent crystallographic orientation of gold crystals on the electrode surface [86].…”

The electrocatalytic characteristics of poly(azure B) and its application in the sensitive determination of hydroquinone

“…Additionally, the HQ molecule contains two phenolic groups and thus possesses excellent electroactivity, which makes the electrochemical detection of HQ possible. Up to now, various modied electrodes have been applied for the electrochemical determination of HQ, including multiwalled carbon nanotubes (MWCNTs) modied electrodes, 11,12 graphene-based electrodes, 13,14 a self-assembled monolayers modied gold electrode, 15 and so on.…”

A novel amperometric sensor based on intercalated montmorillonite modified carbon paste electrode for hydroquinone determination

“…Different analytical methods have been used for HQ determination including spectrophotometry, 3-6 chromatography 7-10 and biosensors based on immobilized crude extracts of several vegetables 1,11,12 or horseradish peroxidase (HRP). 13 HQ contains a phenolic group and possesses excellent electrochemical activity, so different electrochemical methods employing various modified electrodes such as self-assembled monolayers modified gold electrodes, 14,15 ionic liquid 16 or copper complex 17 modified carbon paste electrodes (CPE), and cobalt hydroxide 18 or conducting polymer/carbon nanotube composite 19 modified glassy carbon electrodes have been reported for the electrochemical detection of HQ. More recently, a Pt-graphene hybrid material has been developed for the electrochemical detection of HQ, and a detection limit of 6 mM (S/N ¼ 3) was obtained.…”