High performance surface-enhanced Raman scattering substrate combining low dimensional and hierarchical nanostructures.
We demonstrate that hierarchical nanostructured metal sub-microtubes with evenly distributed nanoscale pores on sidewalls can be synthesized though electrodeposition of metals on electrospun fiber templates and subsequent wet etching. Due to the hierarchical nanostructure and uniform "hot spots" on sidewalls, these porous sub-microtubes exhibit higher surface-enhanced Raman scattering (SERS) activities than both smooth metal sub-microtubes and nanoporous thin films. The synthetic process is simple, inexpensive, and effective, and therefore is a suitable methodology for large-scale production of reliable and reproducible SERS substrates.
Wu
Hui
H
Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Lin
Dandan
D
Pan
Wei
W
D004566:Electrodes; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D011108:Polymers / Q000138:chemical synthesis / Q000737:chemistry; D016062:Porosity; D013059:Spectrum Analysis, Raman / Q000379:methods*; D013499:Surface Properties
D011108:Polymers