期刊
CRYSTAL GROWTH & DESIGN
卷 6, 期 8, 页码 1821-1825出版社
AMER CHEMICAL SOC
DOI: 10.1021/cg060133h
关键词
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Molybdates such as CaMoO4 and SrMoO4 have received much attention recently because of their interesting luminescence and structural properties. Herein, we report a microemulsion-mediated method as a novel technique to synthesize CaMoO4 and SrMoO4 mesocrystals with high hierarchy and with hollow structure. The arms of the flowerlike 3D mesocrystals are radial and are about 2-3 mu m in length. They are constructed from nanoparticles with regular morphology and a size of about 150-300 nm. Study on the formation mechanism of the superstructures reveals that the oriented aggregation mechanism is responsible for the self-assembly. The mesocrystals of CaMoO4 and SrMoO4 are shown to be in a thermodynamically metastable state, which can be destroyed by further reaction time or temperature change.
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