Electrochemical properties of ordered mesoporous carbon and its electroanalytical application for selective determination of dopamine |
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| Affiliation: | 1. Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia;2. Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia;1. College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, PR China;2. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, PR China;3. School of Materials Science and Engineering, Xi’an University of Technology, Xi’an 710048, PR China;4. Institute for Frontier Materials, Deakin University, Geelong, VIC 3217, Australia;1. Facultad de Ciencias Naturales y Matemáticas, Universidad de Ibagué, Carrera 22 Calle 67, Ibagué 730001, Colombia;2. Centro de Investigación, Innovación y Desarrollo de Materiales – CIDEMAT, Universidad de Antioquia – UdeA, Calle 70 No. 52-21, Medellín, Colombia;1. Department of Chemistry, Shahid Bahonar University of Kerman, PO Box 76175-133, Kerman, Iran;2. Young Researchers Society, Shahid Bahonar University of Kerman, PO Box 76175-133, Kerman, Iran;3. Environment Department, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran;1. College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;2. Hebei Key Laboratory of Molecular Chemistry for Drug, Shijiazhuang 050018, China |
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| Abstract: | The electrochemical properties of one novel carbon material, ordered mesoporous carbons (OMC), synthesized by templating SBA-15 mesoporous silica materials and the electrocatalytic behaviors of OMC modified electrode towards the oxidation of dopamine (DA) and ascorbic acid (AA) were studied. Cyclic voltammetry was used to evaluate the electrochemical behaviors of OMC in 5 mM K3Fe(CN)6/0.1 M KCl solution. OMC showed a faster electron transfer rate, as compared with glass carbon (GC) electrode. The higher electron transfer kinetics can be attributed to the existence of a large amount of edge plane defect sites in the OMC materials, which was verified by Raman spectroscopy. The cyclic voltammetric studies also showed the presence of oxygen-containing functional groups on the surface of OMC. Furthermore, the OMC modified electrode showed high electrocatalytic activities toward the oxidation of DA and AA, and resolved their voltammetric responses into two well-defined peaks with peak separation of ca. 0.210 V. The OMC modified electrode could be effectively used for the selective electrochemical determination of DA in the presence of AA. |
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