Formation of BaCrO4 nano crystallites within thermally evaporated sodium bis-2-ethylhexyl-sulfosuccinate and stearic acid thin films

TitleFormation of BaCrO4 nano crystallites within thermally evaporated sodium bis-2-ethylhexyl-sulfosuccinate and stearic acid thin films
Publication TypeJournal Article
Year of Publication2005
AuthorsRautaray, D, Sinha, K, Sainkar, SR, Pasricha, R, Pavaskar, NR, Sastry, M
JournalJournal of the American Ceramic Society
Volume88
Issue1
Pagination24-27
Date PublishedJAN
Type of ArticleArticle
ISSN0002-7820
Abstract

This paper describes the growth of barium chromate (BaCrO4) nanocrystallites within thermally evaporated thin films of stearic acid (StA) and sodium bis-2-ethylhexyl-sulfosuccinate by a process of Ba2+ ion entrapment followed by in situ reaction CrO42- ions. Dense spherical assemblies of BaCrO4 nanocrystallites of very uniform size (similar to50 nm) were obtained within the two different host matrices. The spherical assemblies were composed of smaller (ca. 5-10 nm size) BaCrO4 crystals indicating that efficient size control over crystal size may be exercised by the matrix. Contact angle measurements of the BaCrO4-StA and BaCrO4-sodium bis-2-ethylhexyl-sulfosuccinate films indicated that they were hydrophobic, thus pointing to the possible role of hydrophobic interaction between the StA and sodium bis-2-ethylhexyl-sulfosuccinate monolayer-covered BaCrO4 crystals in the assembly process.

DOI10.1111/j..1551-2916
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)13.038
Divison category: 
Physical and Materials Chemistry