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Potassium-doped graphene for simultaneous determination of nitrite and sulfite in polluted water

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Title: Potassium-doped graphene for simultaneous determination of nitrite and sulfite in polluted water
Authors: Li, Xiao-Rong1, Liu, Jing1, Kong, Fen-Ying1, Liu, Xin-Chun2 xcliu@gucas.ac.cn, Xu, Jing-Juan1 xujj@nju.edu.cn, Chen, Hong-Yuan1
Source: Electrochemistry Communications. Jul2012, Vol. 20, p109-112. 4p.
Subjects: Potassium compounds, Semiconductor doping, Water pollution, Carbon electrodes, Graphene, Electric properties of metals, Nitrites
Abstract: Abstract: Potassium (K) doping plays a critical role in adjusting the electronic properties of carbon materials. In this work, K-doped graphene, as a new electrode material, was used to modify glassy carbon electrode (GCE) for the simultaneous determination of nitrite (NO2 −) and sulfite (SO3 2−) under neutral conditions. The advantages of K-doped graphene/GCE are illustrated from comparison with the graphene/GCE, K-doped multi-walled carbon nanotubes (MWNTs)/GCE, MWNTs/GCE, graphite/GCE and bare/GCE for electrocatalytic and sensing applications. It exhibited a linear response over the concentration range from 0.5μM to 3.9mM, with a detection limit of 0.2μM (S/N=3) for NO2 − and a corresponding linear range of 2.5μM to 10.3mM, with a detection limit of 1.0μM (S/N=3) for SO3 2−. The proposed sensor could be successfully applied in the simultaneous detection of residual NO2 − and SO3 2− in polluted water accurately and precisely. [Copyright &y& Elsevier]
Copyright of Electrochemistry Communications is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 76337427
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Potassium-doped graphene for simultaneous determination of nitrite and sulfite in polluted water
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Xiao-Rong%22">Li, Xiao-Rong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Jing%22">Liu, Jing</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kong%2C+Fen-Ying%22">Kong, Fen-Ying</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Xin-Chun%22">Liu, Xin-Chun</searchLink><relatesTo>2</relatesTo><i> xcliu@gucas.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+Jing-Juan%22">Xu, Jing-Juan</searchLink><relatesTo>1</relatesTo><i> xujj@nju.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Hong-Yuan%22">Chen, Hong-Yuan</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Electrochemistry+Communications%22">Electrochemistry Communications</searchLink>. Jul2012, Vol. 20, p109-112. 4p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Potassium+compounds%22">Potassium compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Semiconductor+doping%22">Semiconductor doping</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Carbon+electrodes%22">Carbon electrodes</searchLink><br /><searchLink fieldCode="DE" term="%22Graphene%22">Graphene</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+properties+of+metals%22">Electric properties of metals</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrites%22">Nitrites</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: Potassium (K) doping plays a critical role in adjusting the electronic properties of carbon materials. In this work, K-doped graphene, as a new electrode material, was used to modify glassy carbon electrode (GCE) for the simultaneous determination of nitrite (NO2 −) and sulfite (SO3 2−) under neutral conditions. The advantages of K-doped graphene/GCE are illustrated from comparison with the graphene/GCE, K-doped multi-walled carbon nanotubes (MWNTs)/GCE, MWNTs/GCE, graphite/GCE and bare/GCE for electrocatalytic and sensing applications. It exhibited a linear response over the concentration range from 0.5μM to 3.9mM, with a detection limit of 0.2μM (S/N=3) for NO2 − and a corresponding linear range of 2.5μM to 10.3mM, with a detection limit of 1.0μM (S/N=3) for SO3 2−. The proposed sensor could be successfully applied in the simultaneous detection of residual NO2 − and SO3 2− in polluted water accurately and precisely. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Electrochemistry Communications is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.elecom.2012.04.014
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      – Code: eng
        Text: English
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        PageCount: 4
        StartPage: 109
    Subjects:
      – SubjectFull: Potassium compounds
        Type: general
      – SubjectFull: Semiconductor doping
        Type: general
      – SubjectFull: Water pollution
        Type: general
      – SubjectFull: Carbon electrodes
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      – SubjectFull: Graphene
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      – SubjectFull: Electric properties of metals
        Type: general
      – SubjectFull: Nitrites
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    Titles:
      – TitleFull: Potassium-doped graphene for simultaneous determination of nitrite and sulfite in polluted water
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            NameFull: Li, Xiao-Rong
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            NameFull: Liu, Jing
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            NameFull: Kong, Fen-Ying
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            NameFull: Liu, Xin-Chun
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            NameFull: Xu, Jing-Juan
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              Text: Jul2012
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              Y: 2012
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              Value: 20
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            – TitleFull: Electrochemistry Communications
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