We present a multifunctional nanostructured electrode
with Ti core
and TiO2 shell (Ti@TiO2) nanowires (NWs) decorated
with Au nanoparticles (NP) for studying spectroelectrochemistry (e.g.,
electrogenerated chemiluminescence, ECL) and surface enhanced Raman
scattering (SERS). The so-called N3 dye (cis-[Ru
(4,4′-COOH-2,2′-bpy)2(NCS)2])
is used as probe molecule for studying ECL and SERS enhancement capability
of this nanostructured electrode. The SERS enhancement of N3 dye is
determined by surface coverage and particle size of Au NPs and the
surface self-assembly configuration of N3 on this new nanostructured
electrode. ECL and in-situ SERS spectroelectrochemistry studies suggest
that Au NP decorated Ti@TiO2 NW electrode can serve as
a new spectroelectrochemistry platform for helping understand redox
reaction mechanism and quantitative analysis with the combined methods
of optical spectroscopy and electrochemistry.