1983
DOI: 10.1021/j100224a022
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Silver atoms and small silver clusters stabilized in zeolite Y: optical spectroscopy

Abstract: Diffuse reflectance and fluorescence emission/ excitation spectra of Ag-exchanged zeolite Y samples recorded under various pretreatment conditions and silver loadings which are known to favor the formation of silver atoms and small charged silver clusters are reported. Under low loading conditions, the spectral data are interpreted in terms of isolated silver atoms in site I by comparison with the corresponding data for silver atoms entrapped in rare gas solids. Higher silver loading favors the formation of an… Show more

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Cited by 97 publications
(51 citation statements)
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“…ascribed to silver clusters located in zeolite channels, the size of these clusters is estimated to be smaller than several atoms [4,5,10]. The broad bands centered at 356 and 392 nm are the characteristic absorbance of metallic silver particles, which may be several nanometers or much larger [22][23][24].…”
Section: Catalyst Characterizationmentioning
confidence: 99%
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“…ascribed to silver clusters located in zeolite channels, the size of these clusters is estimated to be smaller than several atoms [4,5,10]. The broad bands centered at 356 and 392 nm are the characteristic absorbance of metallic silver particles, which may be several nanometers or much larger [22][23][24].…”
Section: Catalyst Characterizationmentioning
confidence: 99%
“…In fact, the mobility of silver in the zeolites has been noticed for a long time, while the possibility of forming highly dispersed silver clusters is the incentives for these work [4][5][6][7][19][20][21]. Less attention has been paid to the correlation between their catalytic performances in catalysis and the microstructural changes of silver catalysts.…”
Section: Introductionmentioning
confidence: 99%
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“…22 Mesoporous silica materials in many forms have been functionalized with silver nanoparticles using various methods. 23À29 These include direct incorporation of silver ions into the channels of mesoporous silica by simple impregnation, pore surface modification by creating silver ion binding sites, and liquid crystalline templating.…”
Section: ' Introductionmentioning
confidence: 99%
“…22 Mesoporous silica materials in many forms have been functionalized with silver nanoparticles using various methods.…”
mentioning
confidence: 99%