On the nature of “SERS active sites”
✍ Scribed by C. Pettenkofer; J. Eickmans; Ü. Ertürk; A. Otto
- Publisher
- Elsevier Science
- Year
- 1985
- Weight
- 54 KB
- Volume
- 151
- Category
- Article
- ISSN
- 0167-2584
No coin nor oath required. For personal study only.
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Tbc concentration dcpendcncc of the SERS intensity of pyridinc adsorbed on a sitver clcctrodc is imwt~atcd by varying the bulk p~ridino c¢ratiok The number of SkXS-active rites dependson the p>&ine concentratbn during the okidation-reduction \*C&L The saturktcd adsorption 5s maintained at wnccnt
Evidence is given that SERS-active sites at Ag electrodes are associated with Ag+ ions, forming sparingly soluble surface complc~cs with ligands such as pyridinc molcculcs and halide ions. Such surface A$ coniplcses contribute a factor of >800 to the overall (107-fold) enhancenient, possibly via a r
We have examined how much the photolysis of 4-nitrobenzenethiol (4-NBT) to 4-aminobenzenethiol on Ag by visible light is affected by the nano-and atomic-scale roughness features of silver which are deeply associated with the electromagnetic (EM) and chemical (CHEM) enhancement mechanisms, respective