Formation of HCN+ in collisions of N+ and N2+ with a self-assembled propanethiol surface on gold

被引：0

作者：

Hechenberger, Faro ^{[1
]}

Kollotzek, Siegfried ^{[1
]}

Ballauf, Lorenz ^{[1
]}

Duensing, Felix ^{[1
]}

Oncak, Milan ^{[1
]}

Herman, Zdenek ^{[1
,2
]}

Scheier, Paul ^{[1
]}

机构：

[1] Univ Innsbruck, Inst Ionenphys & Angew Phys, Technikerst 25, A-6020 Innsbruck, Austria

[2] Acad Sci Czech Republ, Vvi, J Heyrovsky Inst Phys Chem, Dolejskova 3, Prague 18223 8, Czech Republic

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2021年 / 23卷 / 13期

基金：

奥地利科学基金会;

关键词：

HYDROGEN-CYANIDE; HETEROGENEOUS REACTIONS; ATMOSPHERIC CHEMISTRY; MONOLAYER FILMS; IONS; NITROGEN; ALKANETHIOLS; EVOLUTION; TUNGSTEN; ORIGIN;

D O I：

10.1039/d0cp04164e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：7777 / 7782

页数：6