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A facile chemical approach for preparing a SERS active silver substrate.

A facile chemical approach for preparing a SERS active silver substrate.

Physical chemistry chemical physics : PCCP (2010-10-01)

Cheng Yang, Yu-Tao Xie, Matthew M F Yuen, Xiaomin Xiong, C P Wong

ABSTRACT

This communication describes a new surface-enhanced Raman scattering (SERS) active silver substrate prepared by iodination of the evaporated silver foil. After iodination, the morphology of the silver substrate undergoes a self-evolution process in which it displays accordingly the UV-vis absorption shift as well as the AFM topological test. Rhodamine 6G (R6G) is used as the probe molecule to evaluate the enhancement efficiency of the silver substrate at different self-evolution time intervals. The SERS intensity of R6G increases up to ∼29-fold and reaches a maximum after the substrate evolved for 24 h. This method is feasible for the production of an efficient SERS silver substrate.

MATERIALS

Product Number

Brand

Product Description

Silver, foil, 6mm disks, thickness 0.015mm, 99.97%

Silver, foil, 6mm disks, thickness 0.125mm, annealed, 99.95+%

Silver, foil, 8mm disks, thickness 0.007mm, 99.97%

Silver, foil, 8mm disks, thickness 0.035mm, as rolled, 99.95+%

Silver, foil, light tested, 100x100mm, thickness 0.025mm, as rolled, 99.99+%

Silver, foil, light tested, 150x150mm, thickness 0.05mm, annealed, 99.95+%

Silver, foil, light tested, 50x50mm, thickness 0.015mm, 99.97%

Silver, foil, 8mm disks, thickness 0.25mm, as rolled, 99.95+%

Silver, foil, 8mm disks, thickness 0.008mm, 99.95+%

Silver, foil, not light tested, 100x100mm, thickness 0.003mm, 99.9%

Silver, foil, 6mm disks, thickness 0.5mm, as rolled, 99.99+%

Silver, foil, light tested, 150x150mm, thickness 0.05mm, as rolled, 99.95+%

Silver, foil, not light tested, 150x150mm, thickness 0.025mm, as rolled, 99.95+%

Silver, foil, 8mm disks, thickness 1.0mm, as rolled, 99.95+%

Silver, foil, 6mm disks, thickness 1.0mm, as rolled, 99.95+%

Silver, foil, light tested, 150x150mm, thickness 0.025mm, as rolled, 99.95+%

Silver, foil, not light tested, 25x25mm, thickness 0.006mm, 99.97%

Silver, foil, 8mm disks, thickness 0.5mm, as rolled, 99.95+%

Silver, foil, 8mm disks, thickness 0.009mm, 99.97%

Silver, foil, light tested, 150x300mm, thickness 0.05mm, as rolled, 99.95+%

Silver, foil, light tested, 100x100mm, thickness 0.02mm, 99.97%

Silver, foil, not light tested, 150x150mm, thickness 0.02mm, 99.97%

Silver, foil, 8mm disks, thickness 0.05mm, as rolled, 99.95+%

Silver, foil, light tested, 50x50mm, thickness 0.025mm, as rolled, 99.99+%

Silver, foil, light tested, 100x100mm, thickness 0.05mm, as rolled, 99.95+%

Silver, foil, 8mm disks, thickness 0.125mm, as rolled, 99.95+%

Silver, foil, not light tested, 100x100mm, thickness 0.006mm, 99.97%

Silver, foil, light tested, 25x25mm, thickness 0.05mm, as rolled, 99.95+%

Silver, foil, light tested, 50x50mm, thickness 0.02mm, 99.97%

Silver, foil, not light tested, 25x25mm, thickness 0.0025mm, 99.97%