Differential surface partitioning for an ultrasensitive solid-state SERS sensor and its application to food colorant analysis

Spectroscopic analyses of particle and energy aggregations at the interface of silver nanoparticles and fluorescent carbon nanodots

“…We have previously developed a method for assembling solid SERS sensors by depositing and concentrating AgNPs on the surface of alumina beads. 32 We find that when a mixture of AgNPs C and CDs Red is used similarly, the SERS intensity of 4-APDS on the sensor beads increases 2-10 times in comparison with that of AgNPs C alone. We test the other two CD reagents and find that the SERS intensity is reduced significantly with CDs Oxi and nearly diminished with CDs OEt (Fig.…”

A SERS sensor based on 3D nanocone forests capable of intelligent classification of aquatic product dyes

“…Traditionally, there are various methods that can detect dye residues in aquatic products, including the high-performance liquid chromatography (HPLC), thin-layer chromatography (TLC) and enzyme-linked immunosorbent assay (ELISA); however, these methods not only require complex pre-processing procedures but are also time-consuming and costly. [11][12][13] In this sense, it is urgent to develop a convenient, efficient, and low-cost technique for detecting aquatic dye residues.…”

High-Performance Au@Ag Nanorods Substrate for SERS Detection of Malachite Green in Aquatic Products

“…In general, a solid substrate base includes glass slides, silicon wafers, alumina, polyvinyl chloride (PVC) and so on [ 9 , 10 ]. Yu-San Chien et al utilized alumina beads as a solid base to develop a SERS sensor and demonstrated its SERS sensitivity of 4-aminophenyl disulfide (4-APDS) [ 11 ]. However, the use of solid-based and flexible substrates for SERS preparation is associated with tediousness, high cost and it is time-consuming.…”