Abstract
Potential-dependent double-resonance sum frequency generation (DR-SFG) spectroscopy is used to probe a 5σa electronic state of adsorbed CO on Pt thin layer modified Au surfaces in acid solution by showing an amplitude enhancement of atop CO peak due to a surface electronic resonance between visible light and the electronic transition from the Fermi level of Pt to the 5σa antibonding state of CO. The energy level of 5σa state of adsorbed CO on the Pt layer-modified Au electrodes is found to be different from that on bulk Pt electrodes and depend on the thickness of the Pt layer. The observed SFG results are tentatively explained by the shift in d-band energy of the electrode substrates, which could also be responsible for their different electrochemical characteristics toward CO oxidation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
