Silver-decorated carbon nanotube networks as SERS substrates
Chen, Yi-Chieh and Young, Robert J. and MacPherson, Julie V. and Wilson, Neil R. (2011) Silver-decorated carbon nanotube networks as SERS substrates. Journal of Raman Spectroscopy, 42 (6). pp. 1255-1262. ISSN 0377-0486 (https://doi.org/10.1002/jrs.2862)
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We report on investigations upon a surface-enhanced Raman scattering (SERS) substrate produced from a two-dimensional single-walled carbon nanotube (SWNT) network decorated with Ag nanoparticles. Using the strong and unique Raman spectrum of SWNTs as a reference, the SWNT/Ag nanostructure can be considered to provide two regions: one with an ultrasensitive SERS response for single-molecule SERS (SMSERS) study; and another with uniform SERS enhancement over an area of several square millimeters for general SERS measurements. We report the appearance of an anomalous Raman feature at around 2180 cm -1 in the high-sensitivity region which exhibits the characteristics of SMSERS. The SERS performance of the uniform area was characterized using pyridine vapor adsorbed onto the substrate. The presence of the SWNT/Ag nanostructure enhanced the Raman intensity by over seven orders of magnitude, a factor comparable to or exceeding that obtained on SERS substrates reported by other groups. The results indicate great potential to produce highly sensitive, uniform SERS substrates via further fine-tuning of the nanostructure.
ORCID iDs
Chen, Yi-Chieh ORCID: https://orcid.org/0000-0002-8307-0666, Young, Robert J. ORCID: https://orcid.org/0000-0001-9500-6488, MacPherson, Julie V. and Wilson, Neil R.;-
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Item type: Article ID code: 52063 Dates: DateEvent1 June 2011Published18 February 2011Published OnlineSubjects: Technology > Chemical engineering Department: Faculty of Engineering > Chemical and Process Engineering
Faculty of Engineering > Electronic and Electrical EngineeringDepositing user: Pure Administrator Date deposited: 03 Mar 2015 15:08 Last modified: 11 Nov 2024 11:00 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/52063