Formation of HCN+ in collisions of N+ and N-2(+) with a self-assembled propanethiol surface on gold

0543205 - ÚFCH JH 2022 RIV GB eng J - Článek v odborném periodiku
Hechenberger, F. - Kollotzek, S. - Ballauf, L. - Duensing, F. - Ončák, Milan - Herman, Zdeněk - Scheier, P.
Formation of HCN+ in collisions of N+ and N-2(+) with a self-assembled propanethiol surface on gold.
Physical Chemistry Chemical Physics. Roč. 23, č. 13 (2021), s. 7777-7782. ISSN 1463-9076. E-ISSN 1463-9084
Institucionální podpora: RVO:61388955
Klíčová slova: hydrogen-cyanide * heterogeneous reactions * atmospheric chemistry * monolayer films * ions * nitrogen * alkanethiols * evolution * tungsten * origin
Obor OECD: Physical chemistry
Impakt faktor: 3.945, rok: 2021
Způsob publikování: Omezený přístup

Collisions of N+ and N-2(+) with C3 hydrocarbons, represented by a self assembled monolayer of propanethiol on a polcrystalline gold surface, were investigated by experiments over the incident energy range between 5 eV and 100 eV. For N+, formation of HCN+ is observed at incident energies of projectile ions as low as 20 eV. In the case of N-2(+) projectile ions, the yield of HCN+ increased above zero only at incident energies of about 50 eV. This collision energy in the laboratory frame corresponds to an activation energy of about 3 eV to 3.5 eV. In the case of N+ projectile ions, the yield of HCN+ was large for most of the incident energy range, but decreased to zero at incident energies below 20 eV. This may indicate a very small energy threshold for the surface reaction between N+ and C3 hydrocarbons of a few tenths of an eV. Such a threshold for the formation of HCN+ may exist also for collisions of N+ with an adsorbed mixture of hydrocarbon molecules.
Trvalý link: http://hdl.handle.net/11104/0320474