Gold nanoparticle/double-walled carbon nanotube-modified glassy carbon electrode and its application

Abstract

A sensor based on gold nanoparticle/doublewalled carbon nanotube-modified glassy carbon electrode is prepared. Electrochemical behavior of dopamine hydrochloride at gold nanoparticle/double-walled carbon nanotube-modified glassy carbon electrode is investigated. A simple, sensitive, and inexpensive method for determination of dopamine hydrochloride is proposed.

Boron-doped multi-walled carbon nanotubes as sensing material for analysis of dopamine and epinephrine in presence of uric acid

“…It is noticeable that the estimated Rct values vary inversely with the ks parameter, something which is in absolute agreement with previous studies reported in literature [45,46]. The results demonstrate the fewer barriers for electron transfer, and thus, the greater electrocatalytic activity of carbon nanotubes modified with AuNPs [47,48].…”

Electrochemical Sensor Based on Multi‐walled Carbon Nanotube/Gold Nanoparticle Modified Glassy Carbon Electrode for Detection of Estradiol in Environmental Samples

“…The functional groups such as −COOH, −OH, and AuNP etc. of the modified electrode influence the rate of the electrode process .…”

Highly sensitive voltammetric detection of DNA hybridization in sandwich format using thionine-capped gold nanoparticle/reporter DNA conjugates as signal tags

“…Gold nanoparticles (AuNPs) have recently drawn great interest in biosensor development because they are biocompatible and inert [10]. AuNPs have been employed to amplify signals by forming a nanoparticle ensemble substrate on electrode, thereby increasing the amount of immobilized probe DNA on the electrode surface [11]. AuNPs are also extensively used as labels because each AuNP can provide thousands of electrochemically detectable elements either by itself [12] or as a carrier for enzymes to produce electroactive materials [13].…”