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Boron nitride nanosheets as improved and reusable substrates for gold nanoparticles enabled surface enhanced Raman spectroscopy.

Cai,Q, Li,LH, Yu,Y, Liu,Y, Huang,S, Chen,Y, Watanabe,K and Taniguchi,T 2015, Boron nitride nanosheets as improved and reusable substrates for gold nanoparticles enabled surface enhanced Raman spectroscopy., Physical Chemistry Chemical Physics, vol. 17, no. 12, pp. 7761-7766, doi: 10.1039/c5cp00532a.

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Title Boron nitride nanosheets as improved and reusable substrates for gold nanoparticles enabled surface enhanced Raman spectroscopy.
Author(s) Cai,Q
Li,LHORCID iD for Li,LH orcid.org/0000-0003-2435-5220
Yu,Y
Liu,Y
Huang,S
Chen,YORCID iD for Chen,Y orcid.org/0000-0002-7322-2224
Watanabe,K
Taniguchi,T
Journal name Physical Chemistry Chemical Physics
Volume number 17
Issue number 12
Start page 7761
End page 7766
Publisher Royal Society of Chemistry
Place of publication England
Publication date 2015-03
ISSN 1463-9084
Summary Atomically thin boron nitride (BN) nanosheets have been found to be excellent substrates for noble metal particles enabled surface enhanced Raman spectroscopy (SERS), thanks to their good adsorption of aromatic molecules, high thermal stability and weak Raman scattering. Faceted gold (Au) nanoparticles have been synthesized on BN nanosheets using a simple but controllable and reproducible sputtering and annealing method. The size and density of the Au particles can be controlled by sputtering time, current and annealing temperature etc. Under the same sputtering and annealing conditions, the Au particles on BN of different thicknesses show various sizes because the surface diffusion coefficients of Au depend on the thickness of BN. Intriguingly, decorated with similar morphology and distribution of Au particles, BN nanosheets exhibit better Raman enhancements than silicon substrates as well as bulk BN crystals. Additionally, BN nanosheets show no noticeable SERS signal and hence cause no interference to the Raman signal of the analyte. The Au/BN substrates can be reused by heating in air to remove the adsorbed analyte without loss of SERS enhancement.
Language eng
DOI 10.1039/c5cp00532a
Field of Research 100708 Nanomaterials
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30071991

Document type: Journal Article
Collection: Institute for Frontier Materials
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Created: Wed, 01 Apr 2015, 14:10:28 EST

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