Polyoxometalate-Graphene Nanocomposite Modified Electrode for Electrocatalytic Detection of Ascorbic Acid

Phosphomolybdate functionalized graphene nanocomposite (PMo12‐GS) has been successfully formed on a glassy carbon electrode (GCE) for the detection of ascorbic acid (AA). The obtained PMo12‐GS modified GCE, was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning ele...

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Veröffentlicht in:	Electroanalysis (New York, N.Y.) N.Y.), 2014-01, Vol.26 (1), p.178-183
Hauptverfasser:	Zhang, Weiying, Du, Dan, Gunaratne, Don, Colby, Robert, Lin, Yuehe, Laskin, Julia
Format:	Artikel
Sprache:	eng
Schlagworte:	Ascorbic Acid Biosensor Environmental Molecular Sciences Laboratory Graphene Nanocomposite Nanocomposites Polyoxometalate
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creator	Zhang, Weiying Du, Dan Gunaratne, Don Colby, Robert Lin, Yuehe Laskin, Julia
description	Phosphomolybdate functionalized graphene nanocomposite (PMo12‐GS) has been successfully formed on a glassy carbon electrode (GCE) for the detection of ascorbic acid (AA). The obtained PMo12‐GS modified GCE, was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy (SEM) and Fourier transform infrared (FT‐IR) spectroscopy and compared with GCE, GS modified GCE, and PMo12 modified GCE. It shows an increased current and a decrease in over‐potential of ∼210 mV. The amperometric signals are linearly proportional to the AA concentration in a wide concentration range from 1×10−6 M to 8×10−3 M, with a detection limit of 0.5×10−6 M. The PMo12‐GS modified electrode was employed for the determination of the AA level in vitamin C tablets, with recoveries between 96.3 and 100.8 %.
doi_str_mv	10.1002/elan.201300343
format	Article
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The PMo12‐GS modified electrode was employed for the determination of the AA level in vitamin C tablets, with recoveries between 96.3 and 100.8 %.</description><identifier>ISSN: 1040-0397</identifier><identifier>EISSN: 1521-4109</identifier><identifier>DOI: 10.1002/elan.201300343</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Ascorbic Acid ; Biosensor ; Environmental Molecular Sciences Laboratory ; Graphene ; Nanocomposite ; Nanocomposites ; Polyoxometalate</subject><ispartof>Electroanalysis (New York, N.Y.), 2014-01, Vol.26 (1), p.178-183</ispartof><rights>Copyright © 2014 WILEY‐VCH Verlag GmbH & Co. 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The PMo12‐GS modified electrode was employed for the determination of the AA level in vitamin C tablets, with recoveries between 96.3 and 100.8 %.</description><subject>Ascorbic Acid</subject><subject>Biosensor</subject><subject>Environmental Molecular Sciences Laboratory</subject><subject>Graphene</subject><subject>Nanocomposite</subject><subject>Nanocomposites</subject><subject>Polyoxometalate</subject><issn>1040-0397</issn><issn>1521-4109</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqFkEFv2zAMRo1hA9a1u-5s7LSLM8q0FesYpJk3IE13aNGjINM0qs2xMklFm39fBd6K3XqiSHyPoF6WfRKwEADlVx7NtChBIABW-CY7E3UpikqAepveUEEBqJbvsw8h_AIAJSt1ltmfbjy6J7fnaEYTuWi9OdzzxPnOTI7c_uCCjZxfud4Olvt8MzJF73rOB-f_dWQSfYyW8kuOaWLdlLshXwVyvkvTFdn-Ins3mDHwx7_1PLv9trlZfy-21-2P9WpbUFUjFjV1zUCNImG472RpqroeECvZKaKS00ehEo0xEnvqJYihK7kz1ElsGlQC8Tz7PO91IVodKF1P9-SmKd2lRbIja5VCX-bQwbs_Dxyi3ttAPCaF7B6CFjVIlIjqtG8xR8m7EDwP-uDt3vijFqBP4vVJvH4RnwA1A4925OMrab3Zrnb_s8XM2hD56YU1_reWS1zW-m7X6uby6qZdq7Vu8RlIeJe4</recordid><startdate>201401</startdate><enddate>201401</enddate><creator>Zhang, Weiying</creator><creator>Du, Dan</creator><creator>Gunaratne, Don</creator><creator>Colby, Robert</creator><creator>Lin, Yuehe</creator><creator>Laskin, Julia</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>201401</creationdate><title>Polyoxometalate-Graphene Nanocomposite Modified Electrode for Electrocatalytic Detection of Ascorbic Acid</title><author>Zhang, Weiying ; Du, Dan ; Gunaratne, Don ; Colby, Robert ; Lin, Yuehe ; Laskin, Julia</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4533-5cb8fc89c1aedb62a455f3346b9cc2e0020418aa63dcd601fb2ebacb638839133</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Ascorbic Acid</topic><topic>Biosensor</topic><topic>Environmental Molecular Sciences Laboratory</topic><topic>Graphene</topic><topic>Nanocomposite</topic><topic>Nanocomposites</topic><topic>Polyoxometalate</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhang, Weiying</creatorcontrib><creatorcontrib>Du, Dan</creatorcontrib><creatorcontrib>Gunaratne, Don</creatorcontrib><creatorcontrib>Colby, Robert</creatorcontrib><creatorcontrib>Lin, Yuehe</creatorcontrib><creatorcontrib>Laskin, Julia</creatorcontrib><creatorcontrib>Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>OSTI.GOV</collection><jtitle>Electroanalysis (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Weiying</au><au>Du, Dan</au><au>Gunaratne, Don</au><au>Colby, Robert</au><au>Lin, Yuehe</au><au>Laskin, Julia</au><aucorp>Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Polyoxometalate-Graphene Nanocomposite Modified Electrode for Electrocatalytic Detection of Ascorbic Acid</atitle><jtitle>Electroanalysis (New York, N.Y.)</jtitle><addtitle>Electroanalysis</addtitle><date>2014-01</date><risdate>2014</risdate><volume>26</volume><issue>1</issue><spage>178</spage><epage>183</epage><pages>178-183</pages><issn>1040-0397</issn><eissn>1521-4109</eissn><abstract>Phosphomolybdate functionalized graphene nanocomposite (PMo12‐GS) has been successfully formed on a glassy carbon electrode (GCE) for the detection of ascorbic acid (AA). The obtained PMo12‐GS modified GCE, was characterized by cyclic voltammetry, electrochemical impedance spectroscopy, scanning electron microscopy (SEM) and Fourier transform infrared (FT‐IR) spectroscopy and compared with GCE, GS modified GCE, and PMo12 modified GCE. It shows an increased current and a decrease in over‐potential of ∼210 mV. The amperometric signals are linearly proportional to the AA concentration in a wide concentration range from 1×10−6 M to 8×10−3 M, with a detection limit of 0.5×10−6 M. The PMo12‐GS modified electrode was employed for the determination of the AA level in vitamin C tablets, with recoveries between 96.3 and 100.8 %.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/elan.201300343</doi><tpages>6</tpages></addata></record>
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subjects	Ascorbic Acid Biosensor Environmental Molecular Sciences Laboratory Graphene Nanocomposite Nanocomposites Polyoxometalate
title	Polyoxometalate-Graphene Nanocomposite Modified Electrode for Electrocatalytic Detection of Ascorbic Acid
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