Uniform and well-dispersed LaBO3hierarchical architectures: synthesis, formation, and luminescence properties

Abstract

Well-dispersed straw-sheaflike LaBO3 hierarchical architectures have been successfully synthesized by a designed hydrothermal conversion method. La(OH)3 nanowires were first prepared through a simple hydrothermal process. Subsequently, uniform straw-sheaflike LaBO3 architectures were synthesized at the expense of the La(OH)3 nanowires during a hydrothermal conversion process. The whole process was carried out under aqueous conditions without the use of any organic solvent, surfactant, or catalyst. The conversion process from the La(OH)3 precursor to LaBO3 hierarchical architectures was investigated by time-dependent experiments. The as-obtained Eu3+ and Tb3+-doped LaBO3 products show strong characteristic red and green emissions under ultraviolet excitation, which might find potential applications in fields of fluorescent lamps, display systems, and optoelectronic devices.