Recent Nanoarchitectures in Metal Nanoparticle-Graphene Nanocomposite Modified Electrodes for Electroanalysis

Abstract

While increasing attention has been devoted to the use of carbon-based nanomaterials or metal nanoparticles (MNPs) as electrode modifiers for electroanalysis, there is a noticeable development in studies using MNP-graphene nanocomposites or nanohybrids in very recent years. In this review, first, very recent nanoarchitectures in MNP-graphene nanocomposites for modifying electrodes (mainly in 2013) are summarized together with the targets and achievements of electroanalysis. The variety of nanoarchitectures comes from the fact that graphene oxide and metal precursor ions can be reduced chemically or electrochemically, and concurrently or stepwisely. By browsing various preparation methods of the modified electrodes, some characteristic and interesting features of the preparations of MNP-graphene nanocomposites are described together with the possibilities and prospects as electrode modifiers for electroanalysis.

A facile one-pot green synthesis of gold nanoparticle-graphene-PEDOT:PSS nanocomposite for selective electrochemical detection of dopamine

“…These features have led to an increasing use of graphene/metal nanoparticle composites in the fabrication of electrochemical biosensors. 5 Among the more commonly used metal nanoparticles, gold is the most widely studied metal. Gold nanoparticles (AuNPs) have been broadly reported for their high catalytic activity which could facilitate the electron transfer rate and decrease the electrode overpotentials.…”

Amperometric Determination of Ascorbic Acid on an Au Electrode Modified by a Composite Film of Poly(3,4-ethylenedioxythiophene) and Superconductive Carbon Black

“…26 To overcome the above problems, a number of modified electrodes have been developed for the selective determination of AA, DA and UA, such as conducting polymers, 16,26,27 carbon nanotubes, 18,28,29 metal nanoparticles, 21,30-32 nanofibers 33 and graphite. 34 Among these methods, a conducting polymers modified electrode exhibited excellent capability in the determination of AA for their high electrocatalytic ability, good stability and broad potential windows. Furthermore, they can provide a suitable microenvironment for the immobilization of biomolecules, and act as mediators.…”

Competitive Attachment of Gold Nanoparticles on an Indium Tin Oxide Electrode

“…In the field of electroanalysis, metal NPs have been actively utilized as a functional unit to modify electrode surfaces. [1][2][3][4][5] While some advanced applications have been of focus in recent years, e.g., the combination of metal NPs with carbon-based nanomaterials such as graphene, 6 now metal NPs are being regarded as indispensable functional nanomaterials for designing new electrode surfaces and electrochemical devises.…”