Abstract
We describe here a general methodology for the indirect relative determination of absolute fractional surface coverages. The saturation fractional coverage of hydrogen on Ru(001) has been evaluated in particular. In this case, we used H 2CO as a bridge to lead us from the known reference point of the saturation fractional coverage of CO to the unknown reference point of the fractional coverage of hydrogen on Ru(001), which is then used to determine accurately the saturation fractional coverage of hydrogen. We find that θ sat H = 1.02±0.05, i.e. the surface stoichiometry is Ru:H = 1:1. The relative nature of the method, which cancels systematic errors, together with the utilization of a glass envelope around the mass spectrometer, which reduces spurious contributions in the thermal desorption spectra, results in high accuracy in the determination of absolute fractional coverages.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.