Platinum Nanoparticle Ensemble-on-Graphene Hybrid Nanosheet: One-Pot, Rapid Synthesis, and Used as New Electrode Material for Electrochemical Sensing

Abstract

The development of nanoscience and nanotechnology has inspired scientists to continuously explore new electrode materials for constructing an enhanced electrochemical platform for sensing. In this article, we proposed a new Pt nanoparticle (NP) ensemble-on-graphene hybrid nanosheet (PNEGHNs), a new electrode material, which was rapidly prepared through a one-step microwave-assisted heating procedure. The advantages of PNEGHNs modified glassy carbon electrode (GCE) (PNEGHNs/GCE) are illustrated from comparison with the graphenes (GNs) modified GCE for electrocatalytic and sensing applications. The electrocatalytic activities toward several organic and inorganic electroactive compounds at the PNEGHNs/GCE were investigated, all of which show a remarkable increase in electrochemical performance relative to GNs/GCE. Hydrogen peroxide (H2O2) and trinitrotoluene (TNT) were used as two representative analytes to demonstrate the sensing performance of PNEGHNs. It is found that PNEGHNs modified GCE shows a wide linear range and low detection limit for H2O2 and TNT detection. Therefore, PNEGHNs may be an attractive robust and advanced hybrid electrode material with great promise for electrochemical sensors and biosensors design.

TiO2-graphene nanocomposite for electrochemical sensing of adenine and guanine

“…Furthermore, the unique two-dimensional crystal structure of graphene makes it extremely attractive as a support material for metal and metaloxide catalyst nanoparticles [14]. These graphene-based hybrid materials have shown greater versatility as enhanced electrode materials for electrochemical sensors and biosensors applications [15,16].…”

Fabrication of Graphene Coated Carbon Fiber Microelectrode for Highly Sensitive Detection Application

“…4). This indicates an expanded electrochemical active surface area 29 deduced from the porous 3D graphene layer. 24 The half-wave potential (E1/2) at G-CFM is 0.19 V (curve b in Fig.…”

Nonenzymatic hydrogen peroxide electrochemical sensor based on carbon-coated SnO2 supported Pt nanoparticles

“…Platinum-based nanomaterials have shown attractive properties in applications of electrochemical sensors and biosensors [1][2][3][4][5][6][7][8][9]. Pt nanoparticles (NPs) usually possess large electrochemically active surface area which accounts for the number of available active sites towards electrochemical reaction and electron transfer [1].…”

“…Pt nanoparticles (NPs) usually possess large electrochemically active surface area which accounts for the number of available active sites towards electrochemical reaction and electron transfer [1]. Thus, the electrochemical reaction of detection molecules could be greatly promoted at the Pt NPs surfaces, leading to a more sensitive and rapid amperometric response.…”

“…It is well-known that supported metal catalysts show improved stability and higher activity as compared to unsupported bulk metal catalysts, because the metal NPs dispersed on support matrix are less vulnerable to dissolution and aggregation under electrochemical environments. Owing to their large surface area and high electrical conductivity, carbon materials including carbon black, carbon nanotubes and graphene have been commonly used as catalyst support for Pt NPs [1,2,5,[9][10][11][12][13][14][15]. Recently, carbon-coated metal oxide materials have emerged as a new kind of electrochemical enhanced materials in various applications [16][17][18][19].…”