Ag–SiO 2 Janus particles based highly active SERS macroscopic substrates
Source abstract
Abstract
Abstract Macroscopic SERS (M-SERS) substrate with high activity was fabricated by attaching Ag–SiO 2 Janus particles with ∼3 nm sized silver nanoparticles (AgNPs) on a cellulosic film. The synthesized Ag–SiO 2 Janus particles had in-situ deposited AgNPs on one-half and amine functionalization on the other-half, which was utilized for their fixation as a monolayer on cellulosic substrate. Raman spectrum of Rhodamine B (RhB) showed an enhancement factor of ∼5 × 10 4 for dye tagged on both Janus particles and M-SERS. In comparison, AgNPs with almost the same diameter, even after aggregation, did not show enhancement of Raman signals. The enhancement is attributed to in-situ reduction of silver precursor on the SiO 2 surface leading to deposition of AgNPs and generation of a large number of fixed hot-spots in a controlled manner. The Janus particles and M-SERS with ∼3 nm sized AgNPs can find application as both SERS active as well as catalytic material.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Pickering emulsions and particle stabilization · Laser-Ablation Synthesis of Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (39)
Show source-provided references
1. Aggregated silver sols as SERS substrates10.12693/APhysPolA.121.A-68 ↗
2. New nano architecture for SERS applications10.1021/jz3001344 ↗
3. Size-controlled synthesis of Au nanoparticles and nanowires and their application as SERS substrates10.1016/j.colsurfa.2011.04.014 ↗
4. Preparation of stable core–shell dye adsorbent Ag-coated silica nanospheres as a highly active surfaced-enhanced Raman scattering substrate for detection of Rhodamine 6G10.1016/j.dyepig.2012.05.023 ↗
5. Electrophoretic deposition (EPD) of silver nanoparticles and their application as surface-enhanced Raman scattering (SERS) substrates10.1016/j.apsusc.2013.05.048 ↗
6. In situ silver nanoparticles synthesis in agarose film supported on filter paper and its application as highly efficient SERS test stripes10.1016/j.forsciint.2014.01.019 ↗
7. Langmuir-Blodgett silver nanowire monolayers for molecular sensing using surface-enhanced Raman spectroscopy10.1021/nl0344209 ↗
8. Fabrication of tunable Au SERS nanostructures by a versatile technique and application in detecting sodium cyclamate10.1039/C4RA01243G ↗
9. Study of SERS efficiency of metallic colloidal systems
10. Highly sensitive fibre surface-enhanced Raman scattering probes fabricated using laser-induced self-assembly in a meniscus10.1039/C5NR06773A ↗
11. Optimal size of silver nanoparticles for surface-enhanced Raman spectroscopy10.1021/jp106666t ↗
12. Understanding the SERS effects of single silver nanoparticles and their dimers, one at a time10.1021/jz900286a ↗
13. Nanospheres of silver nanoparticles: agglomeration, surface morphology control and application as SERS substrates10.1039/b904712c ↗
14. Solvothermal synthesis of multiple shapes of silver nanoparticles and their SERS properties10.1021/jp068859b ↗
15. Ag@SiO2 core–shell nanostructures: distance-dependent plasmon coupling and SERS investigation10.1021/jz3004014 ↗
16. Gold and silver nanoparticle monomers are non-SERS-active: a negative experimental study with silica-encapsulated Raman-reporter-coated metal colloids10.1039/C4CP05073H ↗
17. Atomically precise silver clusters as new SERS substrates10.1021/jz4014097 ↗
18. Correlated super-resolution optical and structural studies of surface-enhanced Raman scattering hot spots in silver colloid aggregates10.1021/jz200784e ↗
19. Measuring ensemble-averaged surface-enhanced Raman scattering in the hotspots of colloidal nanoparticle dimers and trimers10.1021/ja9090885 ↗
20. Designing, fabricating, and imaging Raman hot spots10.1073/pnas.0605889103 ↗
21. Surface-enhanced Raman scattering via entrapment of colloidal plasmonic nanocrystals by laser generated microbubbles on random gold nano-islands10.1039/C6NR00375C ↗
22. Large-scale fabrication of three-dimensional surface patterns using template-defined electrochemical deposition10.1002/adfm.201201466 ↗
23. Ultrasensitive surface-enhanced Raman scattering detection in common fluids10.1073/pnas.1518980113 ↗
24. Surface-and tip-enhanced Raman spectroscopy in catalysis10.1021/acs.jpclett.6b00147 ↗
25. Progress in multifunctional surface-enhanced Raman scattering substrate for detection10.1039/C4RA09231G ↗
26. Catalytic properties of silver nanoparticles supported on silica spheres10.1021/jp046032g ↗
27. Catalysis by silver nanoparticles/porous silicon for the reduction of nitroaromatics in the presence of sodium borohydride10.1016/j.apsusc.2013.12.036 ↗
28. Spectrophotometric evaluation of surface morphology dependent catalytic activity of biosynthesized silver and gold nanoparticles using UV–vis spectra: a comparative kinetic study10.1016/j.apsusc.2016.01.093 ↗
29. Fabrication of bifunctional gold/gelatin hybrid nanocomposites and their application10.1021/am5000068 ↗
30. Label-free SERS monitoring of chemical reactions catalyzed by small gold nanoparticles using 3D plasmonic superstructures10.1021/ja309074a ↗
31. Hybrid Au–SiO2 core–satellite colloids as switchable SERS tags10.1021/acs.chemmater.5b00128 ↗
32. Superhydrophobic surface enhanced Raman scattering sensing using Janus particle arrays realized by site-specific electrochemical growth10.1039/C3TC31635A ↗
33. In situ synthesis of Ag-SiO2 Janus particles with epoxy functionality for textile applications10.1016/j.partic.2014.06.007 ↗
34. TiO2-SiO2 Janus particles with highly enhanced photocatalytic activity10.1039/C6RA12378C ↗
35. Cyclic electroplating and stripping of silver on Au@SiO2 core/shell nanoparticles for sensitive and recyclable substrate of surface-enhanced Raman scattering10.1039/b924865j ↗
36. CdTe quantum dots modified polystyrene spheres with Ag nanoparticle caps: applications both in fluorescence and in SERS10.1016/j.colsurfa.2013.12.010 ↗
37. Poly (N-vinyl-2-pyrrolidone) (PVP)-capped dendritic gold nanoparticles by a one-step hydrothermal route and their high SERS effect10.1021/la703495s ↗
38. Dispersion stabilization of titania nanoparticles for textile: aggregation behavior and self-cleaning activity10.1080/01932691.2012.685842 ↗
39. Approaching super-hydrophobicity from cellulosic materials: a review10.3183/NPPRJ-2013-28-02-p216-238 ↗