Mass spectrometric study of Ag's clustering ability with O, S and Se

Citation
Xp. Xing et al., Mass spectrometric study of Ag's clustering ability with O, S and Se, CHIN SCI B, 46(7), 2001, pp. 543-549
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
CHINESE SCIENCE BULLETIN
ISSN journal
1001-6538 → ACNP
Volume
46
Issue
7
Year of publication
2001
Pages
543 - 549
Database
ISI
SICI code
1001-6538(200104)46:7<543:MSSOAC>2.0.ZU;2-3
Abstract
Samples Ag/O/S, Ag/O/Se and Ag/S/Se were ablated directly by laser to produ ce clusters. The detection was performed with a time-of-flight mass spectro meter (TOF MS). The cluster ions produced had the following distribution: A g/S binary cluster ions for sample Ag/O/S, Ag/Se binary cluster ions for sa mple Ag/O/Se, and Ag/Se binary cluster ions and Ag/S/Se ternary cluster ion s as the main products for sample Ag/S/Se. Laser double ablation reactor wa s used to study the reaction between Ag/S(Se, O) binary clusters and Se(S) homoclusters. The experiments show that Se clusters can replate S and O in Ag/S and Ag/O clusters while S clusters can replace O in Ag/O clusters. Thi s fact Indicates the sequence of the clustering ability of Ag presented as follows: Ag/Se > AK/S > Ag/O, which was also proved by theoretical calculat ion. The reason of thsi tendency was considered to be the different abiliti es of the elements' polarization, which acts on the stability of clusters.