Enhanced sensing performance of carbaryl pesticide by employing a MnO₂/GO/e-Ag-based nanoplatform: role of graphene oxide as an adsorbing agent in the SERS analytical performance.

ABSTRACT: A functional ternary substrate was developed for surface-enhanced Raman scattering (SERS) sensing systems. MnO₂ nanosheets were synthesized by a simple and controllable hydrothermal method, followed by the integration of graphene oxide (GO) nanosheets. Subsequently, MnO₂/GO nanostructures were decorated with plasmonic Ag nanoparticles (e-AgNPs). The MnO₂/GO/e-Ag substrate could enhance the SERS sensing signal for organic chemicals without the assistance of chemical bonds between those analytes and the semiconductor within the ternary substrate, which have been proven to promote charge transfer and elevate the SERS enhancement in previous studies. Instead, GO nanosheets acted as a carpet also supporting the MnO₂ nanosheets and e-AgNPs to form a po

SUBMITTER: Nga DTN 

PROVIDER: S-EPMC10633879 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature