Bioanalytical Application of the Ordered Mesoporous Carbon Modified Electrodes

Abstract

An ordered mesoporous carbon modified electrode (OMCE) was prepared by film forming method. The electrochemical behavior of the OMCE was evaluated in connection with the electrochemistry of some electroactive biospecies, such as ascorbic acid (AA), acetaminophenol (AP), cysteine (CySH), dopamine (DA), epinephrine (EP), uric acid (UA), b-nicotinamide adenine dinucleotide (reduced disodium salt hydrate, NADH), and hydrogen peroxide (H 2 O 2 ) with cyclic voltammetry. Compared with the conventional carbon nanotubes (CNT) and graphite powder (GP) modified electrodes, the OMCE provided the best electrochemical reactivities in all cases associated with decreased over potential, better-defined peak shape, and higher sensitivity. In addition, the OMC, CNT, and GP modified electrodes were employed as sensitive sensors for H 2 O 2 and NADH quantification and as stable platforms for the fabrication of glucose and ethanol biosensors on which the enzymes were immobilized.

Ordered mesoporous carbon for electrochemical sensing: A review

“…This large value of the electrode area is attributed to the higher surface to volume ratio and roughness factors of OMC [31]. The apparent capacitance of OMC was calculated being a value of 197 F cm −2 by Zhu et al [32], which is much lower than that of CNT. This is very interesting because a lower capacitance results in a lower charging current.…”

Ordered mesoporous carbon modified carbon ionic liquid electrode for the electrochemical detection of double-stranded DNA

“…Jia et al (2007) applied OMC modified GCE for selective determination of dopamine (DA). Zhu et al (2008) also researched the bioanalytical application of the OMC modified electrodes. Zhou et al (2008a,b) applied Nafion-OMC modified GCE to detect epinephrine.…”

Electrochemical Oxidation and Detection of Morphine at Ordered Mesoporous Carbon Modified Glassy Carbon Electrodes

“…The excellent electron transfer ability was ascribed to the more edge-plane-like defective sites, the larger specific surface areas, and the larger pore volumes of OMCs compared with those of CNTs. The surface renewable OMCs paste electrode also exhibited accelerated electron transfer kinetics compared with CNTs paste electrode [12].…”