Bio-inspired self-cleaning carbon cloth based on flower-like Ag nanoparticles and leaf-like MOF: A high-performance and reusable substrate for SERS detection of azo dyes in soft drinks

Towards practical and sustainable SERS: a review of recent developments in the construction of multifunctional enhancing substrates

“…Au NPs decorated cicada wing [233] 10 [237] unspecified concentration of malachite green, 1 µM thiram water-ethanol solution visible light photocatalytic degradation rinse with deionized water for 5 s -visible light (1000 W xenon lamp, 400-800 nm) irradiation for 50 mins -rinse with deionized water for 5 sblow dry with nitrogen gas near-full removal of analyte; slight drop off in SERS activity after each regeneration cycle, maintained more than 70% SERS activity after 5 cycles using malachite green as analyte; maintained more than 83% SERS activity using thiram as analyte MoS 2 /Fe 2 O 3 heterojunction nanocomposite [248] [253] 1.00×10 -6 M rhodamine 6G superhydrophobicity sonicated in 30 mL of deionized water for 10 mins analyte fully removed; SERS activity decreased by 17.3% after 6 cycles Si wafer decorated with hierarchical Ag nanostructures on indium oxide nano-branches [254] 2.1×10 -5 M rhodamine 6G water solution superhydrophobicity sonicated in isopropyl-alcohol bath for 10 mins SERS activity fully maintained for 10 cycles MIP@Ag [266] 1×10 -5 M bisphenol A in acetonitrile solution intermolecular interaction treatment with methanol-acetic acid solution (details unspecified)…”

“…Conversely, superhydrophobic self-cleaning enhancing substrates can typically be regenerated easily and rapidly by rinsing with water. [252][253][254][255] Inspired by nature, superhydrophobic enhancing substrates are typically composed of enhancing noble metal nanoparticles dispersed on the surface of micro-structures to mimic the surface structure of self-cleaning biomaterials, such as lotus leaves. In a typical display, Li, et al designed nonpinning superhydrophobic films with plasmonic hierarchical microscale and nanoscale surface structures produced by laser lithography as reusable SERS substrates (Figure 18A).…”

Three-Dimensional Au/Ag Nanoparticle/Crossed Carbon Nanotube SERS Substrate for the Detection of Mixed Toxic Molecules

“…The fingerprint peaks of all molecules are sensitively detected. The peaks at 1229 cm −1 and 1596 cm −1 , the peaks at 912 cm −1 and 1619 cm −1 , the peaks at 1161 cm −1 , and the peaks at 614 cm −1 and 1651 cm −1 are attributed to Sudan red I, MG, Congo red, and R6G molecule, respectively [ 32 , 33 , 34 ]. The sensitive detection is due to the crossed and porous morphology that easily allows the mixed molecules to enter, and the lots of volume “hotspots” greatly enhance the SERS signal of these molecules.…”

Applications of surface‐enhanced Raman spectroscopy in environmental detection

“…allowed for visible light irradiation rather than UV‐light irradiation, which is especially helpful for detection in environmental samples where UV light may damage the analyte (particularly biological analytes) 260 . Most notably, only one recent article has, to our knowledge, been able to regenerate the substrate with water 255 . Inspired by superhydrophobic fish scales, Wang et al.…”