Raman spectra of ethene adsorbed on "smooth" silver films and Ag( 111) surfaces are mode-selectively enhanced by postdeposition of silver at 40 K. Comparison with thermodesorption spectroscopy demonstrates that only the signal of C2H4 adsorbed at "defect sites" prepared by silver post-deposition is
Surface-enhanced raman spectra of C2H2 and C2H4 adsorbed on silver colloid
β Scribed by K. Manzel; W. Schulze; M. Moskvits
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 243 KB
- Volume
- 85
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Recewed 24 August 198 I, m fin4 form 30 Scptcmber I98 I We report the surfxe-enhanced Raman spectm of cthylrne and xctylenc adsorbed on colloidal sdver pxtlclcs formed b) gas 3ggegxtIon and rsohted at low tcmpenturcs m sohd adsorbate/argon m3trIccs The spectra of both moleculcse~h~b~t modes whrch are normall) Ram3n-forblddcn Ewltatlon wth su~er31 wslblc Ixer rrcquencles mdrclted that the degree of enhxtccmcnt tncrcxed towards the blue
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New high-level quantum chemical calculations have been undertaken to understand the rates and mechanisms of the reactive and associative channels for the reactants C2H2(+) + H2. The reactive channel, which produces C2H3(+) + H, has been shown to be slightly endothermic, confirming earlier calculatio