Journal
CRYSTENGCOMM
Volume 13, Issue 16, Pages 5119-5124Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ce05060e
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Funding
- Scientific Research Foundation for Advanced Talents, Jiangsu University [09JDG009, 10JDG057]
- Jiangsu Natural Science Foundation [BK2008224]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [09KJA430001, 10KJB430001]
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We report on the synthesis of three-dimensional (3D) hierarchical PbWO4 microstructures by an oil-in-water microemulsion-mediated route. As-prepared PbWO4 samples are characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. A possible three-step growth mechanism of PbWO4, in which initial nucleation, self-assembly (oriented aggregation), and subsequent crystal growth (Ostwald ripening) are involved, is proposed to explain the formation of PbWO4 microstructures based on observations of a time-dependent morphology evolution process. The approach is facile, environmentally friendly, and provides a new strategy in the use of microemulsion systems for material design and processing. The oil-in-water microemulsion technique presented here offers promising microstructured media for the synthesis of other inorganic materials with complex 3D architectures and unique morphologies and properties.
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