In:
Rapid Communications in Mass Spectrometry, Wiley, Vol. 28, No. 14 ( 2014-07-30), p. 1601-1608
Abstract:
Metal tellurides have applications in various fields of science and technology but only a few gold‐silver tellurides have been reported. The laser ablation synthesis (LAS) method allows the preparation of nano‐materials from solid substrates. Therefore, this method was selected to synthesise some gold‐silver tellurides. METHODS Laser desorption ionisation quadrupole ion trap time‐of‐flight mass spectrometry (LDI QIT TOF MS) was used for the generation of new Au p Ag q Te r clusters. Scanning electron microscopy (SEM) and energy‐dispersive X‐ray spectroscopy (EDX) were used to characterise the materials. The stoichiometry of the clusters generated was determined via collision‐induced dissociation (CID) and modeling of isotopic patterns. RESULTS Chemisorption of gold and silver nano‐particles on tellurium powder led to the formation of a new kind of Au‐Ag‐Te nano‐composite. The LDI of this nano‐composite yielded nine unary (Ag q , Te r ), 40 binary (Au p Te r and Ag p Te r ) and 78 ternary clusters. The stoichiometry of these novel Au p Ag q Te r clusters is reported here for the first time. CONCLUSIONS The new Au‐Ag‐Te nano‐composite was found to be a more suitable precursor for the generation of clusters than the mixtures of the elements. TOF MS was shown to be a useful technique for following the generation of gold‐silver tellurides. Knowledge of the cluster stoichiometry could accelerate the further development of novel high‐tech materials such as chalcogenide glasses. Copyright © 2014 John Wiley & Sons, Ltd.
Type of Medium:
Online Resource
ISSN:
0951-4198
,
1097-0231
Language:
English
Publisher:
Wiley
Publication Date:
2014
detail.hit.zdb_id:
2002158-6
detail.hit.zdb_id:
58731-X
SSG:
11
