Optimum fabrication parameters for preparing high performance SERS substrates based on Si pyramid structure and silver nanoparticles

Abstract

AgNPs@PSi substrate can detect abamectin molecules at concentrations as low as 5.7 × 10−9 M, with an enhancement factor of 1 × 106. Such a remarkable SERS substrate promises great potential for practical applications in food security.

Machine Learning-Assisted Pesticide Detection on a Flexible Surface-Enhanced Raman Scattering Substrate Prepared by Silver Nanoparticles

“…In abamectin, the peaks observed at 1442, 1592, and 1668 cm −1 are attributed to the in-plane C�O deformation, C−C stretch, and the C−H bending vibrational modes, respectively. 73,74 In myclobutanil, the peaks observed at 732, 1090, and 1588 cm −1 are attributed to the CH 2 rocking vibration, the ρ-chlorophenyl ring deformation, and the C−H bending vibrations, respectively. 75 In phosmet, the characteristic peaks are observed at 646 cm −1 for the P�S skeletal deformation mode, at 1185 cm −1 for the C−N stretch, and at 1771 cm −1 for the C�C stretching vibrations.…”

Surface-Enhanced Raman Spectroscopy Substrate Time Stability Improvement Using an External Oxygen Barrier Method

“…Surface-enhanced Raman scattering (SERS) has the ability to amplify the spectral intensity of Raman scattering light, which makes it a powerful tool for detecting trace substances. [1][2][3] Its advantages, including fast detection, non-destructiveness, and strong resistance to interference, have made it popular in various fields, [4][5][6] such as the detecting of pesticide components and contents, food additives, and stress molecules in medical diseases. [7][8][9][10][11][12] Apart from a few SERS substrates based on gold, which exhibit good stability in air, the majority of SERS substrate materials, such as silver (Ag), are prone to oxidation, leading to a reduction in their enhancement effect.…”

“…Surface-enhanced Raman scattering (SERS) has the ability to amplify the spectral intensity of Raman scattering light, which makes it a powerful tool for detecting trace substances. 1–3 Its advantages, including fast detection, non-destructiveness, and strong resistance to interference, have made it popular in various fields, 4–6 such as the detecting of pesticide components and contents, food additives, and stress molecules in medical diseases. 7–12…”

Increasing charge transfer of SERS by the combination of amorphous Al2O3–Al thin film and ZnO nanorods decorated with Ag nanoparticles for trace detection of metronidazole

“…This is because these platforms not only support CT between the SERS substrate and the absorbed molecules but also direct nanostructure morphologies on which the noble metal is located. Consequently, it is very effective to achieve a highly sensitive SERS substrate made from the combination of noble metals and semiconductor nanostructures, such as the combination of Ag NPs, or Au NPs with ZnO, 6–11 AZO, 12 TiO 2 , 13,14 Al 2 O 3 , 15,16 Cu 2 ZnSnS 4, 17 Si, 18 Cu 2 O, 19 Fe 3 O 4 , 20 ZnO–CuO 21 … and recently, the 2D materials such as MoS 2 , 22 graphene. 23–25 The morphology of ZnO nanomaterials could be easily controlled for nanorods, nanowires, nanoneedles, and nanotubes.…”