期刊
ELECTROCHIMICA ACTA
卷 56, 期 8, 页码 3042-3048出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2010.12.099
关键词
Comparative study; Electrocatalytic activities; Ordered mesoporous carbons; Graphene
资金
- National Natural Science Foundation of China [20875012]
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. (C) 2011 Elsevier Ltd. All rights reserved.
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