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Titolo:
XRD and UV-Vis diffuse reflectance analysis of CeO2-ZrO2 solid solutions synthesized by combustion method
Autore:
Rao, GR; Sahu, HR;
Indirizzi:
Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India Indian Inst Technol Madras Tamil Nadu India 600036 036, Tamil Nadu, India
Titolo Testata:
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES-CHEMICAL SCIENCES
fascicolo: 5-6, volume: 113, anno: 2001,
pagine: 651 - 658
SICI:
0253-4134(200110/12)113:5-6<651:XAUDRA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
OXYGEN STORAGE CAPACITY; ACID-BASE PROPERTIES; CATALYTIC ACTIVITY; CERIA-ZIRCONIA; TRANSFER HYDROGENATION; REDOX BEHAVIOR; MIXED-OXIDE; REDUCTION; IR; SPECTROSCOPY;
Keywords:
Ce1-xZrxO2 solid solutions; combustion synthesis; diffuse reflectance spectroscopy (DRS);
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Rao, GR Indian Inst Technol, Dept Chem, Madras 600036, Tamil Nadu, India Indian Inst Technol Madras Tamil Nadu India 600036 il Nadu, India
Citazione:
G.R. Rao e H.R. Sahu, "XRD and UV-Vis diffuse reflectance analysis of CeO2-ZrO2 solid solutions synthesized by combustion method", P I A S-CH, 113(5-6), 2001, pp. 651-658

Abstract

A series of ceria-incorporated zirconia (Ce1-xZrxO2, x = 0 to 1) solid solutions were prepared by employing the solution combustion synthesis route. The products were characterized by XRD and UV-Vis-NIR diffuse reflectance spectroscopy. The materials are crystalline in nature and the lattice parameters of the solid solution series follow Vegard's law. Diffuse reflectance spectra of the solid solutions in the UV region show two intense bands at 250 and 297 nm which are assigned respectively to Ce3+ <-- O2- and Ce4+ <-- O2- charge transfer transitions. The two vibrational bands in 6960 cm(-1) and 5168 cm(-1) in the NIR region indicate the presence of surface hydroxyl groups on these materials.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/04/20 alle ore 12:23:08