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In situ growth of silver nanoparticles on graphene quantum dots for ultrasensitive colorimetric detection of H₂O₂ and glucose

We report a facile green approach for in situ growth of silver nanoparticles (AgNPs) on the surface of graphene quantum dots (GQDs). GQDs serve as both reducing agent and stabilizer, and no additional reducing agent and stabilizer is necessary. The GQDs/AgNPs hybrid exhibits a superior absorbance fa... Full description

Journal Title: Analytical chemistry 01 July 2014, Vol.86(13), pp.6689-94
Main Author: Chen, Shuai
Other Authors: Hai, Xin , Chen, Xu-Wei , Wang, Jian-Hua
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1520-6882 ; PMID: 24862345 Version:1 ; DOI: 10.1021/ac501497d
Link: http://pubmed.gov/24862345
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recordid: medline24862345
title: In situ growth of silver nanoparticles on graphene quantum dots for ultrasensitive colorimetric detection of H₂O₂ and glucose
format: Article
creator:
  • Chen, Shuai
  • Hai, Xin
  • Chen, Xu-Wei
  • Wang, Jian-Hua
subjects:
  • Biosensing Techniques -- Methods
  • Glucose -- Analysis
  • Graphite -- Chemistry
  • Hydrogen Peroxide -- Analysis
  • Metal Nanoparticles -- Chemistry
  • Quantum Dots -- Chemistry
  • Silver -- Chemistry
ispartof: Analytical chemistry, 01 July 2014, Vol.86(13), pp.6689-94
description: We report a facile green approach for in situ growth of silver nanoparticles (AgNPs) on the surface of graphene quantum dots (GQDs). GQDs serve as both reducing agent and stabilizer, and no additional reducing agent and stabilizer is necessary. The GQDs/AgNPs hybrid exhibits a superior absorbance fading response toward the reduction of H2O2. A simple colorimetric procedure is thus proposed for ultrasensitive detection of H2O2 without additional chromogenic agent. It provides a record detection limit of 33 nM for the detection of H2O2 by the AgNPs-based sensing system. This colorimetric sensing system is further extended to the detection of glucose in combination with the specific catalytic effect of glucose oxidase for the oxidation of glucose and formation of H2O2, giving rise to a detection limit of 170 nM. The favorable performances of the GQDs/AgNPs hybrid are due to the peroxidase-like activity of GQDs.
language: eng
source:
identifier: E-ISSN: 1520-6882 ; PMID: 24862345 Version:1 ; DOI: 10.1021/ac501497d
fulltext: no_fulltext
issn:
  • 15206882
  • 1520-6882
url: Link


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titleIn situ growth of silver nanoparticles on graphene quantum dots for ultrasensitive colorimetric detection of H₂O₂ and glucose
creatorChen, Shuai ; Hai, Xin ; Chen, Xu-Wei ; Wang, Jian-Hua
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subjectBiosensing Techniques -- Methods ; Glucose -- Analysis ; Graphite -- Chemistry ; Hydrogen Peroxide -- Analysis ; Metal Nanoparticles -- Chemistry ; Quantum Dots -- Chemistry ; Silver -- Chemistry
descriptionWe report a facile green approach for in situ growth of silver nanoparticles (AgNPs) on the surface of graphene quantum dots (GQDs). GQDs serve as both reducing agent and stabilizer, and no additional reducing agent and stabilizer is necessary. The GQDs/AgNPs hybrid exhibits a superior absorbance fading response toward the reduction of H2O2. A simple colorimetric procedure is thus proposed for ultrasensitive detection of H2O2 without additional chromogenic agent. It provides a record detection limit of 33 nM for the detection of H2O2 by the AgNPs-based sensing system. This colorimetric sensing system is further extended to the detection of glucose in combination with the specific catalytic effect of glucose oxidase for the oxidation of glucose and formation of H2O2, giving rise to a detection limit of 170 nM. The favorable performances of the GQDs/AgNPs hybrid are due to the peroxidase-like activity of GQDs.
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titleIn situ growth of silver nanoparticles on graphene quantum dots for ultrasensitive colorimetric detection of H₂O₂ and glucose
descriptionWe report a facile green approach for in situ growth of silver nanoparticles (AgNPs) on the surface of graphene quantum dots (GQDs). GQDs serve as both reducing agent and stabilizer, and no additional reducing agent and stabilizer is necessary. The GQDs/AgNPs hybrid exhibits a superior absorbance fading response toward the reduction of H2O2. A simple colorimetric procedure is thus proposed for ultrasensitive detection of H2O2 without additional chromogenic agent. It provides a record detection limit of 33 nM for the detection of H2O2 by the AgNPs-based sensing system. This colorimetric sensing system is further extended to the detection of glucose in combination with the specific catalytic effect of glucose oxidase for the oxidation of glucose and formation of H2O2, giving rise to a detection limit of 170 nM. The favorable performances of the GQDs/AgNPs hybrid are due to the peroxidase-like activity of GQDs.
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abstractWe report a facile green approach for in situ growth of silver nanoparticles (AgNPs) on the surface of graphene quantum dots (GQDs). GQDs serve as both reducing agent and stabilizer, and no additional reducing agent and stabilizer is necessary. The GQDs/AgNPs hybrid exhibits a superior absorbance fading response toward the reduction of H2O2. A simple colorimetric procedure is thus proposed for ultrasensitive detection of H2O2 without additional chromogenic agent. It provides a record detection limit of 33 nM for the detection of H2O2 by the AgNPs-based sensing system. This colorimetric sensing system is further extended to the detection of glucose in combination with the specific catalytic effect of glucose oxidase for the oxidation of glucose and formation of H2O2, giving rise to a detection limit of 170 nM. The favorable performances of the GQDs/AgNPs hybrid are due to the peroxidase-like activity of GQDs.
doi10.1021/ac501497d
pmid24862345
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date2014-07-01