1. Comparative study on the electrocatalytic activities of ordered mesoporous carbons and graphene
- Author
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Wang, Huan, Qi, Bin, Lu, Baoping, Bo, Xiangjie, and Guo, Liping
- Subjects
- *
COMPARATIVE studies , *ELECTROCATALYSIS , *CARBON , *GRAPHENE , *VOLTAMMETRY , *CONDUCTOMETRIC analysis , *BIOMOLECULES - Abstract
Abstract: In this work, a comparative study on the electrocatalytic activities of ordered mesoporous carbons (OMCs) and graphene (GR) is presented. Using voltammetry and amperometry as detection methods, four DNA bases, double-stranded DNA (dsDNA), six important electroactive compounds and various biomolecules were employed to investigate their electrochemical responses on OMC and GR modified glassy carbon electrodes (OMC/GCE and GR/GCE). The results show that OMC/GCE enhances the electron transfer kinetics of these compounds compared to GR/GCE. The discrepancy in electrochemical activities can be attributed to the different microstructures of OMC and GR, which were examined by transmission electron microscopy, X-ray photoelectron spectra, X-ray diffraction, Raman spectra and nitrogen adsorption–desorption. [Copyright &y& Elsevier]
- Published
- 2011
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