In situ green synthesis of silver–graphene oxide nanocomposites by using tryptophan as a reducing and stabilizing agent and their application in SERS
Source abstract
Abstract
Silver–graphene oxide (Ag–GO) nanocomposites were in situ fabricated rapidly through a green one-pot method by using tryptophan (Trp) as a reducing and stabilizing agent. The morphologies of synthesized Ag–GO nanocomposites were characterized by UV–vis absorption spectroscopy, transmission electron microscopy (TEM), and micro-Raman system. The results indicated silver nanoparticles (Ag NPs) with spherical size were well dispersed on the surface of graphene oxide (GO). The role of pH has been explored to obtain optimum reaction conditions during the growth process. Raman signals of GO were greatly enhanced after Ag NPs loaded on its surface. More importantly, the synthesized Ag–GO nanocomposites exhibited excellent surface-enhanced Raman scattering (SERS) activity as SERS substrates to detect crystal violet (CV) in aqueous solution, and the enhancement factor (EF) from the intensity of the vibrational mode at 1621 cm−1 was calculated to be 1.6 × 105.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanoparticles: synthesis and applications · Laser-Ablation Synthesis of Nanoparticles
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (41)
Show source-provided references
1. Electric field effect in atomically thin carbon films10.1126/science.1102896 ↗
2. Graphene: the new two-dimensional nanomaterial10.1002/anie.200901678 ↗
3. Honeycomb carbon: a review of graphene10.1021/cr900070d ↗
4. Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide10.1016/j.carbon.2007.02.034 ↗
5. Graphene oxide as a chemically tunable platform for optical applications10.1038/nchem.907 ↗
6. Modeling of graphite oxide10.1021/ja8021686 ↗
7. The structure of graphite oxide: investigation of its surface chemical groups10.1021/jp1002275 ↗
8. Graphene oxide dispersions in organic solvents10.1021/la801744a ↗
9. Determination of the local chemical structure of graphene oxide and reduced graphene oxide10.1002/adma.201000732 ↗
10. Graphene and graphene oxide: synthesis, properties, and applications10.1002/adma.201001068 ↗
11. Surface modification of graphene nanosheets with gold nanoparticles: the role of oxygen moieties at graphene surface on gold nucleation and growth10.1021/cm901052s ↗
12. Graphene oxide, highly reduced graphene oxide, and graphene: versatile building blocks for carbon-based materials10.1002/smll.200901934 ↗
13. Noble-metal-promoted three-dimensional macroassembly of single-layered graphene oxide10.1002/anie.201000270 ↗
14. In situ loading of well-dispersed gold nanoparticles on two-dimensional graphene oxide/SiO2 composite nanosheets and their catalytic properties10.1039/c2nr11625a ↗
15. Influences of graphene oxide support on the electrochemical performances of graphene oxide–MnO2 nanocomposites10.1186/1556-276X-6-531 ↗
16. Synthesis and characterization of silver nanoparticle and graphene oxide nanosheet composites as a bactericidal agent for water disinfection10.1016/j.jcis.2011.05.009 ↗
17. Excitation profile of surface-enhanced Raman scattering in graphene–metal nanoparticle based derivatives10.1039/c0nr00135j ↗
18. Nanocomposites of size-controlled gold nanoparticles and graphene oxide: formation and applications in SERS and catalysis10.1039/c0nr00473a ↗
19. Noncovalent DNA decorations of graphene oxide and reduced graphene oxide toward water-soluble metal–carbon hybrid nanostructures via self-assembly10.1039/B917752C ↗
20. In situ green synthesis of Au nanostructures on graphene oxide and their application for catalytic reduction of 4-nitrophenol10.1039/c1cy00205h ↗
21. Decorating graphene sheets with gold nanoparticles10.1021/jp800977b ↗
22. Reduction of silver nanoparticles onto graphene oxide nanosheets with N,N-dimethylformamide and SERS activities of GO/Ag composites10.1007/s11051-011-0550-5 ↗
23. One-pot green synthesis of Ag nanoparticles–graphene nanocomposites and their applications in SERS, H2O2, and glucose sensing10.1039/C1RA00641J ↗
24. One pot preparation of reduced graphene oxide (RGO) or Au (Ag) nanoparticle-RGO hybrids using chitosan as a reducing and stabilizing agent and their use in methanol electrooxidation10.1016/j.carbon.2012.01.074 ↗
25. Functionalizing metal nanostructured film with graphene oxide for ultrasensitive detection of aromatic molecules by surface-enhanced Raman spectroscopy10.1021/am200737b ↗
26. Surface enhanced Raman scattering of Ag or Au nanoparticle-decorated reduced graphene oxide for detection of aromatic molecules10.1039/c1sc00254f ↗
27. Enhanced chemotherapy efficacy by sequential delivery of siRNA and anticancer drugs using PEI-grafted graphene oxide10.1002/smll.201001522 ↗
28. Ultrasensitive chemical analysis by Raman spectroscopy10.1021/cr980133r ↗
29. Surface-enhanced Raman scattering10.1039/a827241z ↗
30. Photoinduced conversion of silver nanospheres to nanoprisms10.1126/science.1066541 ↗
31. Can graphene be used as a substrate for Raman enhancement?10.1021/nl903414x ↗
32. Tuning chemical enhancement of SERS by controlling the chemical reduction of graphene oxide nanosheets10.1021/nn102291j ↗
33. A binary functional substrate for enrichment and ultrasensitive SERS spectroscopic detection of folic acid using graphene oxide/Ag nanoparticle hybrids10.1021/nn201606r ↗
34. A facile one-pot method to high-quality Ag–graphene composite nanosheets for efficient surface-enhanced Raman scattering10.1039/c1cc11125f ↗
35. SERS-active silver nanoparticles prepared by a simple and green method
36. Preparation, characterization, surface modification and redox reactions of silver nanoparticles in the presence of tryptophan10.1016/j.colsurfb.2011.06.017 ↗
37. Study of tryptophan assisted synthesis of gold nanoparticles by combining UV–vis, fluorescence, and SERS spectroscopy10.1007/s11051-010-9869-6 ↗
38. Preparation of silver nanoparticles using tryptophan and its formation mechanism10.1016/j.colsurfb.2010.08.001 ↗
39. Surface-enhanced Raman spectroscopy of graphene10.1021/nn1010842 ↗
40. SERS and DFT study of crystal violet10.1016/j.molstruc.2012.10.066 ↗
41. Green synthesis of graphene/Ag nanocomposites10.1016/j.apsusc.2012.08.094 ↗