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SERS study of Ag nanoparticles electrodeposited on patterned TiO 2 nanotube films
Author(s) -
Huang Yongxia,
Sun Lan,
Xie Kunpeng,
Lai Yuekun,
Liu Biju,
Ren Bin,
Lin Changjian
Publication year - 2011
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2830
Subject(s) - rhodamine 6g , materials science , raman spectroscopy , scanning electron microscope , nanoparticle , nanotechnology , raman scattering , nanotube , chemical engineering , deposition (geology) , electron microprobe , analytical chemistry (journal) , carbon nanotube , chemistry , optics , composite material , molecule , organic chemistry , metallurgy , paleontology , physics , engineering , sediment , biology
In this work, Ag nanoparticles (NPs) were deposited on patterned TiO 2 nanotube films through pulse‐current (PC) electrodeposition, and as a result patterned Ag NPs films were achieved. Scanning electron microscopy (SEM), electron probe microanalysis (EPMA), and X‐ray diffraction (XRD) were used, respectively, to study the morphology, uniformity, and phase structure of the patterned Ag NP films. The size and density of the as‐deposited Ag NPs could be controlled by changing the deposition charge density, and it was found that the patterned Ag NP films produced under a charge density of 2.0 C cm −2 gave intense UV–vis and Raman peaks. Two‐dimensional surface‐enhanced Raman scattering (SERS) mapping of rhodamine 6G (R6G) on the patterned Ag NP films demonstrated a high‐throughput, localized molecular adsorption and micropatterned SERS effect. Copyright © 2010 John Wiley & Sons, Ltd.