Synthesis, characterization and modification of functionalized pyrimidine stabilized gold nanoparticles on ITO electrode for the determination of tannic acid.
Identifieur interne : 000344 ( Main/Exploration ); précédent : 000343; suivant : 000345Synthesis, characterization and modification of functionalized pyrimidine stabilized gold nanoparticles on ITO electrode for the determination of tannic acid.
Auteurs : RBID : pubmed:22960353English descriptors
- KwdEn :
- Beer (analysis), Chemistry Techniques, Synthetic, Electrochemistry (instrumentation), Electrochemistry (methods), Electrodes, Gold (chemistry), Hydrogen-Ion Concentration, Metal Nanoparticles (chemistry), Pyrimidines (chemical synthesis), Pyrimidines (chemistry), Sulfhydryl Compounds (chemical synthesis), Sulfhydryl Compounds (chemistry), Tannins (analysis), Tannins (chemistry), Tin Compounds (chemistry).
- MESH :
- chemical , analysis : Tannins.
- chemical , chemical synthesis : Pyrimidines, Sulfhydryl Compounds.
- chemical , chemistry : Gold, Pyrimidines, Sulfhydryl Compounds, Tannins, Tin Compounds.
- analysis : Beer.
- chemistry : Metal Nanoparticles.
- instrumentation : Electrochemistry.
- methods : Electrochemistry.
- Chemistry Techniques, Synthetic, Electrodes, Hydrogen-Ion Concentration.
Abstract
This paper describes the synthesis of 4-amino-6-hydroxy-2-mercaptopyrimidine capped gold nanoparticles (AHMP-AuNPs) in aqueous medium and their immobilization on indium tin oxide (ITO) electrode modified with (3-mercaptopropyl)trimethoxysilane (MPTS) sol-gel for the determination of tannic acid (TA). The high resolution transmission electron microscopy (HR-TEM) images show that the particles are spherical in shape with a diameter of ~6 nm. The heterogeneous electron transfer rate constant (k(et)) of [Fe(CN)₆]³⁻/⁴⁻ at ITO/MPTS/AHMP-AuNPs electrode was found to be 1.14×10⁻⁷ m/s. This value was much higher than the values obtained at ITO/MPTS (4.94×10⁻⁹ m/s) and bare ITO (8.79×10⁻⁸ m/s) electrodes, indicating that the electron transfer reaction was faster at AuNPs modified electrode. Further, the ITO/MPTS/AHMP-AuNPs electrode shows excellent electrocatalytic activity toward TA oxidation when compared to bare ITO electrode. This was understood from the obtained higher heterogeneous rate constant (k(s)) value at AuNPs modified electrode (7.35×10⁻⁵ m/s) than at bare ITO electrode (5.45×10⁻⁶ m/s). Using the amperometry method, detection of 20 nmol/L TA was achieved. The practical application of the present method was demonstrated by determining the concentration of TA in commercial beer samples.
DOI: 10.1016/j.bioelechem.2012.08.003
PubMed: 22960353
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Synthesis, characterization and modification of functionalized pyrimidine stabilized gold nanoparticles on ITO electrode for the determination of tannic acid.</title><author><name sortKey="Raj, M Amal" uniqKey="Raj M">M Amal Raj</name><affiliation wicri:level="1"><nlm:affiliation>Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram 624302, Dindigul, Tamilnadu, India.</nlm:affiliation><country xml:lang="fr">Inde</country><wicri:regionArea>Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram 624302, Dindigul, Tamilnadu</wicri:regionArea></affiliation></author><author><name sortKey="Revin, S Brillians" uniqKey="Revin S">S Brillians Revin</name></author><author><name sortKey="John, S Abraham" uniqKey="John S">S Abraham John</name></author></titleStmt><publicationStmt><date when="2013">2013</date><idno type="doi">10.1016/j.bioelechem.2012.08.003</idno><idno type="RBID">pubmed:22960353</idno><idno type="pmid">22960353</idno><idno type="wicri:Area/Main/Corpus">000A76</idno><idno type="wicri:Area/Main/Curation">000A76</idno><idno type="wicri:Area/Main/Exploration">000344</idno></publicationStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Beer (analysis)</term><term>Chemistry Techniques, Synthetic</term><term>Electrochemistry (instrumentation)</term><term>Electrochemistry (methods)</term><term>Electrodes</term><term>Gold (chemistry)</term><term>Hydrogen-Ion Concentration</term><term>Metal Nanoparticles (chemistry)</term><term>Pyrimidines (chemical synthesis)</term><term>Pyrimidines (chemistry)</term><term>Sulfhydryl Compounds (chemical synthesis)</term><term>Sulfhydryl Compounds (chemistry)</term><term>Tannins (analysis)</term><term>Tannins (chemistry)</term><term>Tin Compounds (chemistry)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Tannins</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemical synthesis" xml:lang="en"><term>Pyrimidines</term><term>Sulfhydryl Compounds</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Gold</term><term>Pyrimidines</term><term>Sulfhydryl Compounds</term><term>Tannins</term><term>Tin Compounds</term></keywords><keywords scheme="MESH" qualifier="analysis" xml:lang="en"><term>Beer</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Metal Nanoparticles</term></keywords><keywords scheme="MESH" qualifier="instrumentation" xml:lang="en"><term>Electrochemistry</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Electrochemistry</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Chemistry Techniques, Synthetic</term><term>Electrodes</term><term>Hydrogen-Ion Concentration</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper describes the synthesis of 4-amino-6-hydroxy-2-mercaptopyrimidine capped gold nanoparticles (AHMP-AuNPs) in aqueous medium and their immobilization on indium tin oxide (ITO) electrode modified with (3-mercaptopropyl)trimethoxysilane (MPTS) sol-gel for the determination of tannic acid (TA). The high resolution transmission electron microscopy (HR-TEM) images show that the particles are spherical in shape with a diameter of ~6 nm. The heterogeneous electron transfer rate constant (k(et)) of [Fe(CN)₆]³⁻/⁴⁻ at ITO/MPTS/AHMP-AuNPs electrode was found to be 1.14×10⁻⁷ m/s. This value was much higher than the values obtained at ITO/MPTS (4.94×10⁻⁹ m/s) and bare ITO (8.79×10⁻⁸ m/s) electrodes, indicating that the electron transfer reaction was faster at AuNPs modified electrode. Further, the ITO/MPTS/AHMP-AuNPs electrode shows excellent electrocatalytic activity toward TA oxidation when compared to bare ITO electrode. This was understood from the obtained higher heterogeneous rate constant (k(s)) value at AuNPs modified electrode (7.35×10⁻⁵ m/s) than at bare ITO electrode (5.45×10⁻⁶ m/s). Using the amperometry method, detection of 20 nmol/L TA was achieved. The practical application of the present method was demonstrated by determining the concentration of TA in commercial beer samples.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">22960353</PMID><DateCreated><Year>2012</Year><Month>10</Month><Day>23</Day></DateCreated><DateCompleted><Year>2013</Year><Month>06</Month><Day>11</Day></DateCompleted><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1878-562X</ISSN><JournalIssue CitedMedium="Internet"><Volume>89</Volume><PubDate><Year>2013</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Bioelectrochemistry (Amsterdam, Netherlands)</Title><ISOAbbreviation>Bioelectrochemistry</ISOAbbreviation></Journal><ArticleTitle>Synthesis, characterization and modification of functionalized pyrimidine stabilized gold nanoparticles on ITO electrode for the determination of tannic acid.</ArticleTitle><Pagination><MedlinePgn>1-10</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.bioelechem.2012.08.003</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S1567-5394(12)00125-9</ELocationID><Abstract><AbstractText>This paper describes the synthesis of 4-amino-6-hydroxy-2-mercaptopyrimidine capped gold nanoparticles (AHMP-AuNPs) in aqueous medium and their immobilization on indium tin oxide (ITO) electrode modified with (3-mercaptopropyl)trimethoxysilane (MPTS) sol-gel for the determination of tannic acid (TA). The high resolution transmission electron microscopy (HR-TEM) images show that the particles are spherical in shape with a diameter of ~6 nm. The heterogeneous electron transfer rate constant (k(et)) of [Fe(CN)₆]³⁻/⁴⁻ at ITO/MPTS/AHMP-AuNPs electrode was found to be 1.14×10⁻⁷ m/s. This value was much higher than the values obtained at ITO/MPTS (4.94×10⁻⁹ m/s) and bare ITO (8.79×10⁻⁸ m/s) electrodes, indicating that the electron transfer reaction was faster at AuNPs modified electrode. Further, the ITO/MPTS/AHMP-AuNPs electrode shows excellent electrocatalytic activity toward TA oxidation when compared to bare ITO electrode. This was understood from the obtained higher heterogeneous rate constant (k(s)) value at AuNPs modified electrode (7.35×10⁻⁵ m/s) than at bare ITO electrode (5.45×10⁻⁶ m/s). Using the amperometry method, detection of 20 nmol/L TA was achieved. The practical application of the present method was demonstrated by determining the concentration of TA in commercial beer samples.</AbstractText><CopyrightInformation>Copyright © 2012 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Raj</LastName><ForeName>M Amal</ForeName><Initials>MA</Initials><Affiliation>Centre for Nanoscience and Nanotechnology, Department of Chemistry, Gandhigram Rural Institute, Gandhigram 624302, Dindigul, Tamilnadu, India.</Affiliation></Author><Author ValidYN="Y"><LastName>Revin</LastName><ForeName>S Brillians</ForeName><Initials>SB</Initials></Author><Author ValidYN="Y"><LastName>John</LastName><ForeName>S Abraham</ForeName><Initials>SA</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType>Journal Article</PublicationType><PublicationType>Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>08</Month><Day>17</Day></ArticleDate></Article><MedlineJournalInfo><Country>Netherlands</Country><MedlineTA>Bioelectrochemistry</MedlineTA><NlmUniqueID>100953583</NlmUniqueID><ISSNLinking>1567-5394</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>4-amino-6-hydroxy-2-mercaptopyrimidine</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Pyrimidines</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Sulfhydryl Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Tannins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance>Tin Compounds</NameOfSubstance></Chemical><Chemical><RegistryNumber>71243-84-0</RegistryNumber><NameOfSubstance>indium tin oxide</NameOfSubstance></Chemical><Chemical><RegistryNumber>7440-57-5</RegistryNumber><NameOfSubstance>Gold</NameOfSubstance></Chemical><Chemical><RegistryNumber>K8CXK5Q32L</RegistryNumber><NameOfSubstance>pyrimidine</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N">Beer</DescriptorName><QualifierName MajorTopicYN="N">analysis</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Chemistry Techniques, Synthetic</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrochemistry</DescriptorName><QualifierName MajorTopicYN="N">instrumentation</QualifierName><QualifierName MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Electrodes</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Gold</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Hydrogen-Ion Concentration</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Metal Nanoparticles</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Pyrimidines</DescriptorName><QualifierName MajorTopicYN="Y">chemical synthesis</QualifierName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Sulfhydryl Compounds</DescriptorName><QualifierName MajorTopicYN="Y">chemical synthesis</QualifierName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tannins</DescriptorName><QualifierName MajorTopicYN="Y">analysis</QualifierName><QualifierName MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N">Tin Compounds</DescriptorName><QualifierName MajorTopicYN="Y">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2012</Year><Month>4</Month><Day>22</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2012</Year><Month>8</Month><Day>3</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2012</Year><Month>8</Month><Day>3</Day></PubMedPubDate><PubMedPubDate PubStatus="aheadofprint"><Year>2012</Year><Month>8</Month><Day>17</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>9</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>9</Month><Day>11</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2013</Year><Month>6</Month><Day>12</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pii">S1567-5394(12)00125-9</ArticleId><ArticleId IdType="doi">10.1016/j.bioelechem.2012.08.003</ArticleId><ArticleId IdType="pubmed">22960353</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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