| One-step electrochemical synthesis of PtNi nanoparticle-graphene nanocomposites for nonenzymatic amperometric glucose detection. | |
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MedLine Citation:
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PMID: 21736289 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We report a facile one-step ultrasonication-assisted electrochemical method to synthesize nanocomposites of graphene and PtNi alloy nanoparticles (NPs) and their uses for highly selective nonenzymatic glucose detection. We have demonstrated that the obtained nanocomposites exhibit a collection of unique features including well-dispersed NPs with alloy features, high NP loading, and effective reduction of graphene oxide (GO). And the resulting nanoelectrocatalyst shows significantly improved electrochemical performance in nonenzymatic amperometric glucose detection, compared to a number of control electrode materials including the PtNi NP-chemically reduced GO nanocomposites fabricated in two steps (chemical reduction of GO followed by the electrodeposition of metal NPs). Under the physiological condition, the response current of the sensor is linear to glucose concentration up to 35 mM with a sensitivity of 20.42 μA cm(-2) mM(-1) at a substantially negative potential (i.e., -0.35 V). Operation under this potential eliminates the impact from the oxidation of common interfering species. This sensor with excellent sensitivity and selectivity also allows for reproducible detection of glucose in human urine samples. |
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Authors:
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Hongcai Gao; Fei Xiao; Chi Bun Ching; Hongwei Duan |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2011-07-18 |
Journal Detail:
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Title: ACS applied materials & interfaces Volume: 3 ISSN: 1944-8252 ISO Abbreviation: ACS Appl Mater Interfaces Publication Date: 2011 Aug |
Date Detail:
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Created Date: 2011-08-24 Completed Date: 2011-12-20 Revised Date: 2012-03-28 |
Medline Journal Info:
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Nlm Unique ID: 101504991 Medline TA: ACS Appl Mater Interfaces Country: United States |
Other Details:
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Languages: eng Pagination: 3049-57 Citation Subset: IM |
Affiliation:
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School of Chemical and Biomedical Engineering, Nanyang Technological University , 70 Nanyang Drive, Singapore 637457. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Catalysis Electrochemical Techniques / methods* Electrodes Glucose / analysis* Graphite / chemistry* Humans Nanoparticles / chemistry* Nickel / chemistry* Oxidation-Reduction Oxides / chemistry Platinum / chemistry* Ultrasonics |
| Chemical | |
Reg. No./Substance:
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0/Oxides; 50-99-7/Glucose; 7440-02-0/Nickel; 7440-06-4/Platinum; 7782-42-5/Graphite |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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