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Graphene Nanoribbon-Supported PtPd Concave Nanocubes for Electrochemical Detection of TNT with High Sensitivity and Selectivity

In this work, PtPd concave nanocubes anchored on graphene nanoribbons (PtPd-rGONRs) were successfully fabricated through a hydrothermal process. The structural characterizations confirmed that PtPd concave cubes with an average size of around 11 nm have been successfully synthesized and they are uni... Full description

Journal Title: Analytical chemistry 15 December 2015, Vol.87(24), pp.12262-9
Main Author: Zhang, Ruizhong
Other Authors: Sun, Chia-Liang , Lu, Yu-Jen , Chen, Wei
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1520-6882 ; PMID: 26568380 Version:1 ; DOI: 10.1021/acs.analchem.5b03390
Link: http://pubmed.gov/26568380
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recordid: medline26568380
title: Graphene Nanoribbon-Supported PtPd Concave Nanocubes for Electrochemical Detection of TNT with High Sensitivity and Selectivity
format: Article
creator:
  • Zhang, Ruizhong
  • Sun, Chia-Liang
  • Lu, Yu-Jen
  • Chen, Wei
subjects:
  • Electrochemical Techniques
  • Graphite -- Chemistry
  • Metal Nanoparticles -- Chemistry
  • Nanotubes, Carbon -- Chemistry
  • Palladium -- Chemistry
  • Platinum -- Chemistry
  • Trinitrotoluene -- Analysis
ispartof: Analytical chemistry, 15 December 2015, Vol.87(24), pp.12262-9
description: In this work, PtPd concave nanocubes anchored on graphene nanoribbons (PtPd-rGONRs) were successfully fabricated through a hydrothermal process. The structural characterizations confirmed that PtPd concave cubes with an average size of around 11 nm have been successfully synthesized and they are uniformly assembled on the surface of rGONRs. The electrochemical measurements demonstrated that the PtPd-rGONRs composite-modified glassy carbon electrode (GCE) shows much enhanced current signals for TNT reduction, which is 4 and 12-fold higher than rGONRs and bare glassy carbon electrode, respectively. The PtPd-rGONRs exhibited a wide linear range for TNT detection from 0.01 to 3 ppm with the sensing limit of 0.8 ppb. Moreover, the PtPd-rGONRs showed excellent detection stability for the determination of TNT. Most importantly, the PtPd-rGONRs-based electrochemical detection platform can be successfully applied to TNT detection in tap water and real lake water samples. The present study indicates that graphene nanoribbon-supported nanocrystals are promising in designing high performance electrochemical sensors for explosives detection.
language: eng
source:
identifier: E-ISSN: 1520-6882 ; PMID: 26568380 Version:1 ; DOI: 10.1021/acs.analchem.5b03390
fulltext: no_fulltext
issn:
  • 15206882
  • 1520-6882
url: Link


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subjectElectrochemical Techniques ; Graphite -- Chemistry ; Metal Nanoparticles -- Chemistry ; Nanotubes, Carbon -- Chemistry ; Palladium -- Chemistry ; Platinum -- Chemistry ; Trinitrotoluene -- Analysis
descriptionIn this work, PtPd concave nanocubes anchored on graphene nanoribbons (PtPd-rGONRs) were successfully fabricated through a hydrothermal process. The structural characterizations confirmed that PtPd concave cubes with an average size of around 11 nm have been successfully synthesized and they are uniformly assembled on the surface of rGONRs. The electrochemical measurements demonstrated that the PtPd-rGONRs composite-modified glassy carbon electrode (GCE) shows much enhanced current signals for TNT reduction, which is 4 and 12-fold higher than rGONRs and bare glassy carbon electrode, respectively. The PtPd-rGONRs exhibited a wide linear range for TNT detection from 0.01 to 3 ppm with the sensing limit of 0.8 ppb. Moreover, the PtPd-rGONRs showed excellent detection stability for the determination of TNT. Most importantly, the PtPd-rGONRs-based electrochemical detection platform can be successfully applied to TNT detection in tap water and real lake water samples. The present study indicates that graphene nanoribbon-supported nanocrystals are promising in designing high performance electrochemical sensors for explosives detection.
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abstractIn this work, PtPd concave nanocubes anchored on graphene nanoribbons (PtPd-rGONRs) were successfully fabricated through a hydrothermal process. The structural characterizations confirmed that PtPd concave cubes with an average size of around 11 nm have been successfully synthesized and they are uniformly assembled on the surface of rGONRs. The electrochemical measurements demonstrated that the PtPd-rGONRs composite-modified glassy carbon electrode (GCE) shows much enhanced current signals for TNT reduction, which is 4 and 12-fold higher than rGONRs and bare glassy carbon electrode, respectively. The PtPd-rGONRs exhibited a wide linear range for TNT detection from 0.01 to 3 ppm with the sensing limit of 0.8 ppb. Moreover, the PtPd-rGONRs showed excellent detection stability for the determination of TNT. Most importantly, the PtPd-rGONRs-based electrochemical detection platform can be successfully applied to TNT detection in tap water and real lake water samples. The present study indicates that graphene nanoribbon-supported nanocrystals are promising in designing high performance electrochemical sensors for explosives detection.
doi10.1021/acs.analchem.5b03390
pmid26568380
issn00032700
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date2015-12-15