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Electrochemical behavior and its electrocatalytic properties of chemically modified electrode with Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2008.09.044 Byline: Chuangye Chen, Yonghai Song, Li Wang Keywords: Electrochemistry; Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-; Cysteamine; Gold electrode; Atomic force microscopy; Monolaye... Full description

Journal Title: Electrochimica Acta Feb 1, 2009, Vol.54(5), p.1607(5)
Main Author: Chen, Chuangye
Other Authors: Song, Yonghai , Wang, Li
Format: Electronic Article Electronic Article
Language: English
Subjects:
Quelle: Cengage Learning, Inc.
ID: ISSN: 0013-4686
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title: Electrochemical behavior and its electrocatalytic properties of chemically modified electrode with Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-
format: Article
creator:
  • Chen, Chuangye
  • Song, Yonghai
  • Wang, Li
subjects:
  • Nitrites -- Chemical Properties
  • Nitrites -- Analysis
  • Electrochemical Reactions -- Chemical Properties
  • Electrochemical Reactions -- Analysis
  • Organic Acids -- Chemical Properties
  • Organic Acids -- Analysis
  • Bromates -- Chemical Properties
  • Bromates -- Analysis
  • Water -- Chemical Properties
  • Water -- Analysis
  • Atomic Force Microscopy -- Chemical Properties
  • Atomic Force Microscopy -- Analysis
  • Electrochemistry -- Chemical Properties
  • Electrochemistry -- Analysis
  • Cysteamine -- Chemical Properties
  • Cysteamine -- Analysis
ispartof: Electrochimica Acta, Feb 1, 2009, Vol.54(5), p.1607(5)
description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2008.09.044 Byline: Chuangye Chen, Yonghai Song, Li Wang Keywords: Electrochemistry; Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-; Cysteamine; Gold electrode; Atomic force microscopy; Monolayer Abstract: A monolayer of Keggin-type heteropolyanion [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- was fabricated by electrodepositing [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- on cysteamine modified gold electrode. The monolayer of [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- modified gold electrode was characterized by atomic force microscopy (AFM) and electrochemical method. AFM results showed the [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- uniformly deposited on the electrode surface and formed a porous monolayer. Cyclic voltammetry exhibited one oxidation peak and two reduction peaks in 1.0M H.sub.2SO.sub.4 in the potential range of -0.2 to 0.7V. The constructed electrode could exist in a large pH (0-7.6) range and showed good catalytic activity towards the reduction of bromate anion (BrO.sub.3.sup.-) and nitrite (NO.sub.2.sup.-), and oxidation of ascorbic acid (AA) in acidic solution. The well catalytic active of the electrode was ascribed to the porous structure of the [SiNi(H.sub.2O)W.sub.11O.sub.39]6.sup.- monolayer. Author Affiliation: College of Chemistry and Chemical engineering, Jiangxi Normal University, Nanchang 330022, People's Republic of China Article History: Received 13 June 2008; Revised 27 July 2008; Accepted 22 September 2008
language: English
source: Cengage Learning, Inc.
identifier: ISSN: 0013-4686
fulltext: fulltext
issn:
  • 0013-4686
  • 00134686
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titleElectrochemical behavior and its electrocatalytic properties of chemically modified electrode with Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-
creatorChen, Chuangye ; Song, Yonghai ; Wang, Li
ispartofElectrochimica Acta, Feb 1, 2009, Vol.54(5), p.1607(5)
identifierISSN: 0013-4686
subjectNitrites -- Chemical Properties ; Nitrites -- Analysis ; Electrochemical Reactions -- Chemical Properties ; Electrochemical Reactions -- Analysis ; Organic Acids -- Chemical Properties ; Organic Acids -- Analysis ; Bromates -- Chemical Properties ; Bromates -- Analysis ; Water -- Chemical Properties ; Water -- Analysis ; Atomic Force Microscopy -- Chemical Properties ; Atomic Force Microscopy -- Analysis ; Electrochemistry -- Chemical Properties ; Electrochemistry -- Analysis ; Cysteamine -- Chemical Properties ; Cysteamine -- Analysis
descriptionTo link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2008.09.044 Byline: Chuangye Chen, Yonghai Song, Li Wang Keywords: Electrochemistry; Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-; Cysteamine; Gold electrode; Atomic force microscopy; Monolayer Abstract: A monolayer of Keggin-type heteropolyanion [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- was fabricated by electrodepositing [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- on cysteamine modified gold electrode. The monolayer of [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- modified gold electrode was characterized by atomic force microscopy (AFM) and electrochemical method. AFM results showed the [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- uniformly deposited on the electrode surface and formed a porous monolayer. Cyclic voltammetry exhibited one oxidation peak and two reduction peaks in 1.0M H.sub.2SO.sub.4 in the potential range of -0.2 to 0.7V. The constructed electrode could exist in a large pH (0-7.6) range and showed good catalytic activity towards the reduction of bromate anion (BrO.sub.3.sup.-) and nitrite (NO.sub.2.sup.-), and oxidation of ascorbic acid (AA) in acidic solution. The well catalytic active of the electrode was ascribed to the porous structure of the [SiNi(H.sub.2O)W.sub.11O.sub.39]6.sup.- monolayer. Author Affiliation: College of Chemistry and Chemical engineering, Jiangxi Normal University, Nanchang 330022, People's Republic of China Article History: Received 13 June 2008; Revised 27 July 2008; Accepted 22 September 2008
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descriptionTo link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2008.09.044 Byline: Chuangye Chen, Yonghai Song, Li Wang Keywords: Electrochemistry; Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-; Cysteamine; Gold electrode; Atomic force microscopy; Monolayer Abstract: A monolayer of Keggin-type heteropolyanion [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- was fabricated by electrodepositing [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- on cysteamine modified gold electrode. The monolayer of [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- modified gold electrode was characterized by atomic force microscopy (AFM) and electrochemical method. AFM results showed the [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- uniformly deposited on the electrode surface and formed a porous monolayer. Cyclic voltammetry exhibited one oxidation peak and two reduction peaks in 1.0M H.sub.2SO.sub.4 in the potential range of -0.2 to 0.7V. The constructed electrode could exist in a large pH (0-7.6) range and showed good catalytic activity towards the reduction of bromate anion (BrO.sub.3.sup.-) and nitrite (NO.sub.2.sup.-), and oxidation of ascorbic acid (AA) in acidic solution. The well catalytic active of the electrode was ascribed to the porous structure of the [SiNi(H.sub.2O)W.sub.11O.sub.39]6.sup.- monolayer. Author Affiliation: College of Chemistry and Chemical engineering, Jiangxi Normal University, Nanchang 330022, People's Republic of China Article History: Received 13 June 2008; Revised 27 July 2008; Accepted 22 September 2008
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abstractTo link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.electacta.2008.09.044 Byline: Chuangye Chen, Yonghai Song, Li Wang Keywords: Electrochemistry; Keggin-type [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6-; Cysteamine; Gold electrode; Atomic force microscopy; Monolayer Abstract: A monolayer of Keggin-type heteropolyanion [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- was fabricated by electrodepositing [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- on cysteamine modified gold electrode. The monolayer of [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- modified gold electrode was characterized by atomic force microscopy (AFM) and electrochemical method. AFM results showed the [SiNi(H.sub.2O)W.sub.11O.sub.39].sup.6- uniformly deposited on the electrode surface and formed a porous monolayer. Cyclic voltammetry exhibited one oxidation peak and two reduction peaks in 1.0M H.sub.2SO.sub.4 in the potential range of -0.2 to 0.7V. The constructed electrode could exist in a large pH (0-7.6) range and showed good catalytic activity towards the reduction of bromate anion (BrO.sub.3.sup.-) and nitrite (NO.sub.2.sup.-), and oxidation of ascorbic acid (AA) in acidic solution. The well catalytic active of the electrode was ascribed to the porous structure of the [SiNi(H.sub.2O)W.sub.11O.sub.39]6.sup.- monolayer. Author Affiliation: College of Chemistry and Chemical engineering, Jiangxi Normal University, Nanchang 330022, People's Republic of China Article History: Received 13 June 2008; Revised 27 July 2008; Accepted 22 September 2008
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