authors |
Ferreira, A; Ananias, D; Carlos, LD; Morais, CM; Rocha, J |
nationality |
International |
journal |
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY |
keywords |
FRAMEWORK CERIUM SILICATE; POWDER DIFFRACTION; TITANOSILICATES; SPECTROSCOPY; EUROPIUM; SYMMETRY |
abstract |
The synthesis and structural characterization of microporous lanthanide silicates (Na(1.08)K(0.5)Ln(1.14-)Si(3)O(8.5).1.78H(2)O, Ln = Eu, Tb, Sm, Ce) are reported. The structure of these solids is closely related with the structure of hydrated calcium silicate minerals known as tobermorites and was solved by powder X-ray diffraction ab initio (direct) methods and further characterized by chemical analysis, thermogravimetry, scanning electron microscopy, Na-23 and Si-29 MAS NMR and luminescence spectroscopy. These materials combine microporosity with interesting photoluminescence properties, and their structural flexibility allows fine-tuning of luminescence properties, by introducing a second type of lanthanide ion in the framework. Thus, they may find applications in new types of sensors. |
publisher |
AMER CHEMICAL SOC |
issn |
0002-7863 |
year published |
2003 |
volume |
125 |
issue |
47 |
beginning page |
14573 |
ending page |
14579 |
digital object identifier (doi) |
10.1021/la036988p |
web of science category |
Chemistry, Multidisciplinary |
subject category |
Chemistry |
unique article identifier |
WOS:000186722200074
|
ciceco authors
impact metrics
journal analysis (jcr 2019):
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journal impact factor |
14.612 |
5 year journal impact factor |
14.549 |
category normalized journal impact factor percentile |
92.938 |
dimensions (citation analysis):
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altmetrics (social interaction):
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