Method for obtaining a Raman spectrum of an analyte
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMohammad Kamal Hossain, Qasem Ahmed Drmosh, Amar Kamal Mohamedkhair
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Abstract
A surface-enhanced Raman scattering (SERS) substrate and its method of formation is disclosed. The surface-enhanced Raman scattering (SERS) substrate comprises a solid support, a first noble metal nanoparticles is disposed on the solid support, a porous oxide layer comprising transition metal oxide nanoparticles is disposed on the first noble metal nanoparticles and a second noble metal nanoparticles is disposed on the porous oxide layer. The porous oxide layer prevents contact between the first noble metal nanoparticles and the second noble metal nanoparticles and has a mean pore size of 2 to 30 nm.
Claims12
A method of obtaining a Raman spectrum of an analyte, the method comprising:
- depositing the analyte onto a surface-enhanced Raman scattering (SERS) substrate to form a sample;
- exposing the sample to laser light such that a portion of the laser light is scattered by the sample to form scattered light;
- and
- detecting the scattered light,
- wherein the surface-enhanced Raman scattering (SERS) substrate, comprises:
- a solid support;
- first noble metal nanoparticles disposed on the solid support;
- a continuous porous oxide layer consisting of ZnO nanoparticles disposed on the first noble metal nanoparticles;
- and
- second noble metal nanoparticles disposed on the continuous porous oxide layer,
- wherein the continuous porous oxide layer prevents contact between the first noble nanoparticles and the second noble nanoparticles and has a mean pore size of 2 to 30 nm.
Dependencies are inferred from the claim text.