Open AccessDendritic Silver Microstructures as Highly Sensitive SERS Platform for the Detection of Trace Urea
Author(s) -
Jin Wen,
Fazhi Song,
Yunchen Du,
Yu Wang,
Rong Qiang
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/688/3/033040
Subject(s) - urea , raman scattering , indium tin oxide , detection limit , chemical engineering , materials science , diffusion , deposition (geology) , raman spectroscopy , nanotechnology , chemistry , analytical chemistry (journal) , chromatography , thin film , organic chemistry , optics , physics , engineering , thermodynamics , paleontology , sediment , biology
In this communication, Surface-Enhanced Raman Scattering (SERS) coupled with Ag dendrites has been firstly used for the detection of limited urea. Dendritic silver microparticles are immobilized on indium doped tin oxide (ITO) surface via replacement reaction, and the formation mechanism could be attributed to electroless deposition (ELD) and diffusion-limited aggregation (DLA), respectively. The plot of the average Raman intensity measured at 1004cm −1 as a function of urea concentration with R 2 value of 0.999 indicates silver dendrites exhibit a satisfactory and consistent performance with an analytical urea enhancement. The limit of detection for urea could reach the physiological range of urea.