Premium
Controlled synthesis of barium chromate microcrystals
Author(s) -
Xiao H.,
Ding S.S.,
Xu X.,
Pan N.,
Fan D.Y.,
Yang H.J.,
Lei M.,
Du Y.X.,
Zhang R.,
Wang Y.G.,
Tang W.H.
Publication year - 2014
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201400267
Subject(s) - crystallization , nucleation , aqueous solution , materials science , crystal (programming language) , photoluminescence , chemical engineering , barium , morphology (biology) , chromate conversion coating , crystallography , nanotechnology , chemistry , organic chemistry , metallurgy , optoelectronics , computer science , engineering , genetics , programming language , coating , biology
Barium chromate (BaCrO 4 ) microcrystals with various morphologies such as shuttle‐like, x‐shaped, ellipsoid, leaf‐like crystals were synthesized from aqueous solutions using poly (sodium 4‐styrenesulfonate) (PSS) as template agent at room temperature. The characterization results show that pH values and concentrations of reactants and PSS are important parameters in the morphology and size evolution of BaCrO 4 . The possible formation mechanism of BaCrO 4 crystals with different morphologies was proposed. PSS complexes Ba 2+ first, then affects the nucleation and crystallization process by interacting with the plane face of crystal, which finally results in various morphologies and sizes of crystals. In addition, the possible mechanism of photoluminescence (PL) spectra was also proposed.