Interaction of ozone with gold nanoparticles

Preparation of gold ethanol colloid by the arc discharge method

“…Hydrogen (molecular and/or atomic form) does not adsorb on a gold surface at room temperature [22][23][24] and is removed from the ethanol suspension to the gas phase. However, active oxygen can be adsorbed on a gold surface at room temperature [25][26][27]. Based on our results and observations we may suggest that surface of gold nanoparticles is saturated with negatively charged oxygen, which can create hydrogen bonds in an ethanol neighboring environment.…”

Preparation of gold nanoparticles by arc discharge in water

“…Since hydrogen (molecular or atomic form) does not adsorb on a gold surface at room temperature [8][9][10], it is ultimately removed from the water suspension to the gas phase. However oxygen can be adsorbed on a gold surface at room temperature [11][12][13]. Based on our results and observation we suppose that negatively charged surface of gold nanoparticles (electrons are injected into the gold nanoparticles by the cathode during arc discharge) are saturated by atomic oxygen, which can create hydrogen bonds with water particles in a water environment.…”

The influence of gold nanoparticles on the conductivity response of SnO2-based thin film gas sensors

“…In particular, it is known that gold is reactive enough to catalyze surface reactions, such as ozone dissociation [80]. The results M a n u s c r i p t 14 obtained by Saliba et al [81], Puckett et al [82], Biener et al [83], and King [84] also indicate an interaction of gold nanoparticles with ozone. For example, King [84] found that gold surfaces were oxidized by a combination of UV light and ozone generated from a mercury lamp, and after such treatment, the gold surfaces were enriched in oxygen.…”