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Aqueously Dispersed Silver Nanoparticle-Decorated Boron Nitride Nanosheets for Reusable, Thermal Oxidation-Resistant Surface Enhanced Raman Spectroscopy (SERS) DevicesThe impurity-free aqueous dispersions of boron nitride nanosheets (BNNS) allowed the facile preparation of silver (Ag) nanoparticle-decorated BNNS by chemical reduction of an Ag salt with hydrazine in the presence of BNNS. The resultant Ag-BNNS nanohybrids remained dispersed in water, allowing convenient subsequent solution processing. By using substrate transfer techniques, Ag-BNNS nanohybrid thin film coatings on quartz substrates were prepared and evaluated as reusable surface enhanced Raman spectroscopy (SERS) sensors that were robust against repeated solvent washing. In addition, because of the unique thermal oxidation-resistant properties of the BNNS, the sensor devices may be readily recycled by short-duration high temperature air oxidation to remove residual analyte molecules in repeated runs. The limiting factor associated with the thermal oxidation recycling process was the Ostwald ripening effect of Ag nanostructures.
Document ID
20120006037
Acquisition Source
Langley Research Center
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Lin, Yi
(National Inst. of Aerospace Hampton, VA, United States)
Bunker, Christopher E.
(Air Force Research Lab. Wright-Patterson AFB, OH, United States)
Fernandos, K. A. Shiral
(Dayton Univ. Research Inst. Dayton, OH, United States)
Connell, John W.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 25, 2013
Publication Date
January 26, 2012
Publication Information
Publication: Applied Materials and Interfaces
Publisher: ACS Publications
Volume: 4
Issue: 2
Subject Category
Inorganic, Organic And Physical Chemistry
Report/Patent Number
NF1676L-13902
Funding Number(s)
WBS: WBS 284848.02.04.07.03
Distribution Limits
Public
Copyright
Other

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