Reactive nucleation of silver clusters with oxygen and water

Autor:	C. Bréchignac, I. Tignères, J. Leygnier, Ph. Cahuzac
Rok vydání:	1999
Předmět:	chemistry Mass spectrum Analytical chemistry Cluster (physics) Nucleation General Physics and Astronomy chemistry.chemical_element Molecule Photoionization Physical and Theoretical Chemistry Block (periodic table) Mass spectrometry Oxygen
Zdroj:	Chemical Physics Letters. 303:304-310
ISSN:	0009-2614
DOI:	10.1016/s0009-2614(99)00232-8
Popis:	The nucleation of silver atoms by the gas aggregation technique when adding O2 and H2O molecules in the carrier gas was investigated by photoionization mass spectrometry. No change appeared in the bare silver cluster mass spectra when only water was added to the nucleation carrier gas. In the presence of oxygen and water, reactive nucleation occurred simultaneously. At low reactive gas concentration (unsaturated regime), AgnOxHy compounds with x=2, 3 and 4 are produced for n⩾6. For a larger reactive gas concentration (saturated regime) two series of cluster bunches having Ag3O3Hy as the building block were observed. The precursors of these series are (Ag4O3Hy)+ and (Ag5O5Hy)+, respectively. This behavior differs totally from the results obtained for reactive nucleation of an alkaline vapor but can be viewed as a precursor of the surface silver hydroxidation mechanism.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ee895c5f56d42a7f6c7bc28dbbf51a6b https://doi.org/10.1016/s0009-2614(99)00232-8 Zobrazit plný text záznamu Full Text from ScienceDirect