Bulk and surface structure characterization of nanoscopic silver doped lanthanum chromites

TitleBulk and surface structure characterization of nanoscopic silver doped lanthanum chromites
Publication TypeJournal Article
Year of Publication2013
AuthorsDesai, PA, Joshi, PN, Patil, KR, Athawale, AA
JournalApplied Surface Science
Volume264
Pagination574-580
Date PublishedJAN
ISSN0169-4332
KeywordsEnergy dispersive analysis of X-rays, Microwave combustion synthesis, Perovskite nanostructures, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy
Abstract

Crystalline state of lanthanum chromites with silver as a dopant has been studied by X-ray diffraction and transmission electron microscopy reveals microscopic properties of grain boundaries. X-ray photoelectron spectroscopy has been used to analyze surface states with atomic ratio of La, Cr, O and Ag as a dopant. LaCrO3 shows mixed valence states of chromium while the silver doped samples exhibit differences in chromium concentration with the oxidation of Cr3+ to Cr6+ in presence of chromium nitrate as a precursor salt. Trivalent stable state of chromium is observed for samples synthesized by chromic acetate as a precursor salt. (C) 2012 Elsevier B.V. All rights reserved.

DOI10.1016/j.apsusc.2012.10.067
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.538
Divison category: 
Catalysis and Inorganic Chemistry
Center for Material Characterization (CMC)