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Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO2/Au PCB.

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Title: Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO2/Au PCB.
Authors: Panneer Selvam, Sathish1 (AUTHOR) satp103@gc.gachon.ac.kr, Chinnadayyala, Somasekhar R.1 (AUTHOR) ssreddy@gachon.ac.kr, Cho, Sungbo1,2 (AUTHOR) sbcho@gachon.ac.kr, Yun, Kyusik3 (AUTHOR) sbcho@gachon.ac.kr
Source: Nanomaterials (2079-4991). Jul2020, Vol. 10 Issue 7, p1368. 1p.
Subjects: Electrochemical sensors, Voltammetry, Charge exchange, Impedance spectroscopy, Charge transfer, Cyclic voltammetry, Polychlorinated biphenyls
Abstract: An rGO-Ag@SiO2 nanocomposite-based electrochemical sensor was developed to detect etidronic acid (EA) using the differential pulse voltammetric (DPV) technique. Rapid self-assembly of the rGO-Ag@SiO2 nanocomposite was accomplished through probe sonication. The developed rGO-Ag@SiO2 nanocomposite was used as an electrochemical sensing platform by drop-casting on a gold (Au) printed circuit board (PCB). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) confirmed the enhanced electrochemical active surface area (ECASA) and low charge transfer resistance (Rct) of the rGO-Ag@SiO2/Au PCB. The accelerated electron transfer and the high number of active sites on the rGO-Ag@SiO2/Au PCB resulted in the electrochemical detection of EA through the DPV technique with a limit of detection (LOD) of 0.68 μM and a linear range of 2.0–200.0 μM. The constructed DPV sensor exhibited high selectivity toward EA, high reproducibility in terms of different Au PCBs, excellent repeatability, and long-term stability in storage at room temperature (25 °C). The real-time application of the rGO-Ag@SiO2/Au PCB for EA detection was investigated using EA-based pharmaceutical samples. Recovery percentages between 96.2% and 102.9% were obtained. The developed DPV sensor based on an rGO-Ag@SiO2/Au PCB could be used to detect other electrochemically active species following optimization under certain conditions. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI 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.)
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  Label: Title
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  Data: Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO2/Au PCB.
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  Data: <searchLink fieldCode="AR" term="%22Panneer+Selvam%2C+Sathish%22">Panneer Selvam, Sathish</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> satp103@gc.gachon.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Chinnadayyala%2C+Somasekhar+R%2E%22">Chinnadayyala, Somasekhar R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ssreddy@gachon.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Cho%2C+Sungbo%22">Cho, Sungbo</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> sbcho@gachon.ac.kr</i><br /><searchLink fieldCode="AR" term="%22Yun%2C+Kyusik%22">Yun, Kyusik</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> sbcho@gachon.ac.kr</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jul2020, Vol. 10 Issue 7, p1368. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Electrochemical+sensors%22">Electrochemical sensors</searchLink><br /><searchLink fieldCode="DE" term="%22Voltammetry%22">Voltammetry</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+exchange%22">Charge exchange</searchLink><br /><searchLink fieldCode="DE" term="%22Impedance+spectroscopy%22">Impedance spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+transfer%22">Charge transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclic+voltammetry%22">Cyclic voltammetry</searchLink><br /><searchLink fieldCode="DE" term="%22Polychlorinated+biphenyls%22">Polychlorinated biphenyls</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: An rGO-Ag@SiO2 nanocomposite-based electrochemical sensor was developed to detect etidronic acid (EA) using the differential pulse voltammetric (DPV) technique. Rapid self-assembly of the rGO-Ag@SiO2 nanocomposite was accomplished through probe sonication. The developed rGO-Ag@SiO2 nanocomposite was used as an electrochemical sensing platform by drop-casting on a gold (Au) printed circuit board (PCB). Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) confirmed the enhanced electrochemical active surface area (ECASA) and low charge transfer resistance (Rct) of the rGO-Ag@SiO2/Au PCB. The accelerated electron transfer and the high number of active sites on the rGO-Ag@SiO2/Au PCB resulted in the electrochemical detection of EA through the DPV technique with a limit of detection (LOD) of 0.68 μM and a linear range of 2.0–200.0 μM. The constructed DPV sensor exhibited high selectivity toward EA, high reproducibility in terms of different Au PCBs, excellent repeatability, and long-term stability in storage at room temperature (25 °C). The real-time application of the rGO-Ag@SiO2/Au PCB for EA detection was investigated using EA-based pharmaceutical samples. Recovery percentages between 96.2% and 102.9% were obtained. The developed DPV sensor based on an rGO-Ag@SiO2/Au PCB could be used to detect other electrochemically active species following optimization under certain conditions. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI 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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        Value: 10.3390/nano10071368
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      – Code: eng
        Text: English
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        Type: general
      – SubjectFull: Voltammetry
        Type: general
      – SubjectFull: Charge exchange
        Type: general
      – SubjectFull: Impedance spectroscopy
        Type: general
      – SubjectFull: Charge transfer
        Type: general
      – SubjectFull: Cyclic voltammetry
        Type: general
      – SubjectFull: Polychlorinated biphenyls
        Type: general
    Titles:
      – TitleFull: Differential Pulse Voltammetric Electrochemical Sensor for the Detection of Etidronic Acid in Pharmaceutical Samples by Using rGO-Ag@SiO2/Au PCB.
        Type: main
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          Name:
            NameFull: Panneer Selvam, Sathish
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            NameFull: Chinnadayyala, Somasekhar R.
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            NameFull: Cho, Sungbo
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            NameFull: Yun, Kyusik
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              M: 07
              Text: Jul2020
              Type: published
              Y: 2020
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