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Roles of graphene nanogap for the AgNFs electrodeposition on the woven Cu net as flexible substrate and its application in SERS
- Source :
- Carbon. 133:300-305
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- A new substrate composing of Ag nanoflowers on graphene@Cu net (AgNFs/G@Cu) was fabricated on the flexible woven copper net. Graphene, an ideal 2D plane, provides better dispersion of regular electrodeposited AgNFs arrays. Graphene nanogap was used to enhance the EM coupling between AgNFs and metal Cu substrate. Regular AgNFs arrays offer denser “hotspots”, which further enhance the EM coupling. High sensitivity (rhodamine 6G (R6G): 10−14 M, crystal violet (CV): 10−12 M) and good homogeneity are realized in our experiment and proved by the COMSOL simulation. Cu net, remarkable flexibility and practicality, allows for a close contact to the sample surface by swabbing. Malachite green (MG) as low as 10−11 M on the surface of the marine fish can be detected. This work may offer novel and practical SERS applications in the areas of pesticide residue, food security and biotechnology.
- Subjects :
- Materials science
Graphene
chemistry.chemical_element
Marine fish
Nanotechnology
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Copper
0104 chemical sciences
law.invention
Rhodamine 6G
Metal
chemistry.chemical_compound
chemistry
law
visual_art
Homogeneity (physics)
visual_art.visual_art_medium
General Materials Science
Crystal violet
0210 nano-technology
Close contact
Subjects
Details
- ISSN :
- 00086223
- Volume :
- 133
- Database :
- OpenAIRE
- Journal :
- Carbon
- Accession number :
- edsair.doi...........04dc886337ea1dbb4066e91ed46cf883