Fabrication of a fast response non-enzymatic glucose sensor based on in-situ synthesized Cu-metal organic frameworks integrated with electrochemically reduced graphene quantum dots.

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Title: Fabrication of a fast response non-enzymatic glucose sensor based on in-situ synthesized Cu-metal organic frameworks integrated with electrochemically reduced graphene quantum dots.
Authors: Makani, Samaneh1, Habibi, Biuck1 B.Habibi@azaruniv.ac.ir, Mohammad-Rezaei, Rahim1
Source: Nanomedicine Journal. Winter2025, Vol. 12 Issue 1, p18-32. 15p.
Subject Terms: *BLOOD sugar, *VOLTAMMETRY technique, *CARBON electrodes, *QUANTUM dots, *OXIDATION of glucose
Abstract: Objective(s): During this study, a novel and fast response platform based on in-situ synthesis of Cu-metal organic frameworks (Cu-MOFs) integrated with electrochemically reduced graphene quantum dots (ErGQDs) was developed through an electrochemical deposition method and a conversation process for non-enzymatic glucose determination. Materials and Methods: In the first step, metallic copper and ErGQDs were simultaneous electrochemically deposited on the surface of carbon ceramic electrode (CCE). Then, metallic copper was converted to copper oxide by cyclic voltammetry technique. Finally, by adding the benzene-1, 3, 5-tricarboxylic acid (BTC), copper-based MOFs was formed on the surface of constructed electrode by an in-situ conversation process and the fabricated electrode (Cu-MOFs/ErGQDs/CCE) was used for the non-enzymatic electrochemical detection of glucose. The physicochemical characterization and electrocatalytic behavior of fabricated electrode toward glucose oxidation were studied through the suitable techniques. Results: The electrochemical results demonstrated that the Cu-MOFs/ErGQDs/CCE is a suitable sensor for glucose determination which exhibits wide linear ranges (2.0-500.0 µM), low detection limit [0.59 µM (S/N=3)], high sensitivity (5069 µA mM-1cm-2), stability (RSD%=3.02), reproducibility (RSD%= 2.09) and good selectivity. Conclusion: Overall, this study highlights the development of Cu-MOFs/ErGQDs/CCE as a sensor with promising characteristics for non-enzymatic determination of glucose. So that, the present sensor was used for detection of glucose in human blood serum and saliva samples. [ABSTRACT FROM AUTHOR]
Copyright of Nanomedicine Journal is the property of Mashhad University of Medical Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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
  Group: Ti
  Data: Fabrication of a fast response non-enzymatic glucose sensor based on in-situ synthesized Cu-metal organic frameworks integrated with electrochemically reduced graphene quantum dots.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Makani%2C+Samaneh%22">Makani, Samaneh</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Habibi%2C+Biuck%22">Habibi, Biuck</searchLink><relatesTo>1</relatesTo><i> B.Habibi@azaruniv.ac.ir</i><br /><searchLink fieldCode="AR" term="%22Mohammad-Rezaei%2C+Rahim%22">Mohammad-Rezaei, Rahim</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Nanomedicine+Journal%22">Nanomedicine Journal</searchLink>. Winter2025, Vol. 12 Issue 1, p18-32. 15p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22BLOOD+sugar%22">BLOOD sugar</searchLink><br />*<searchLink fieldCode="DE" term="%22VOLTAMMETRY+technique%22">VOLTAMMETRY technique</searchLink><br />*<searchLink fieldCode="DE" term="%22CARBON+electrodes%22">CARBON electrodes</searchLink><br />*<searchLink fieldCode="DE" term="%22QUANTUM+dots%22">QUANTUM dots</searchLink><br />*<searchLink fieldCode="DE" term="%22OXIDATION+of+glucose%22">OXIDATION of glucose</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Objective(s): During this study, a novel and fast response platform based on in-situ synthesis of Cu-metal organic frameworks (Cu-MOFs) integrated with electrochemically reduced graphene quantum dots (ErGQDs) was developed through an electrochemical deposition method and a conversation process for non-enzymatic glucose determination. Materials and Methods: In the first step, metallic copper and ErGQDs were simultaneous electrochemically deposited on the surface of carbon ceramic electrode (CCE). Then, metallic copper was converted to copper oxide by cyclic voltammetry technique. Finally, by adding the benzene-1, 3, 5-tricarboxylic acid (BTC), copper-based MOFs was formed on the surface of constructed electrode by an in-situ conversation process and the fabricated electrode (Cu-MOFs/ErGQDs/CCE) was used for the non-enzymatic electrochemical detection of glucose. The physicochemical characterization and electrocatalytic behavior of fabricated electrode toward glucose oxidation were studied through the suitable techniques. Results: The electrochemical results demonstrated that the Cu-MOFs/ErGQDs/CCE is a suitable sensor for glucose determination which exhibits wide linear ranges (2.0-500.0 µM), low detection limit [0.59 µM (S/N=3)], high sensitivity (5069 µA mM-1cm-2), stability (RSD%=3.02), reproducibility (RSD%= 2.09) and good selectivity. Conclusion: Overall, this study highlights the development of Cu-MOFs/ErGQDs/CCE as a sensor with promising characteristics for non-enzymatic determination of glucose. So that, the present sensor was used for detection of glucose in human blood serum and saliva samples. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomedicine Journal is the property of Mashhad University of Medical Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. 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: 10.22038/nmj.2024.75527.1833
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      – Code: eng
        Text: English
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      – SubjectFull: BLOOD sugar
        Type: general
      – SubjectFull: VOLTAMMETRY technique
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      – SubjectFull: CARBON electrodes
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      – SubjectFull: QUANTUM dots
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            NameFull: Makani, Samaneh
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              Text: Winter2025
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              Y: 2025
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