Fast synthesis and morphology control of lead tungstate microcrystals via a microwave-assisted method

Journal Article · Wed Feb 04 04:00:00 EST 2009 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2008.04.021· OSTI ID:21199682

Guizhen, Wang ^[1]

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1. Key Laboratory of Nanostructured Materials, Qingdao University of Science and Technology, Qingdao 266042 (China)

Lead tungstate (PbWO{sub 4}) microcrystals with different morphologies, such as tetragonal flowerlike, amygdaloidal, and multiple-lamellar, have been successfully synthesized via a simple microwave-assisted method. Various factors, such as the pH value and the concentration of the cetyltrimethylammonium bromide (CTAB), play an important role in the morphological control of PbWO{sub 4} microcrystals. The products were characterized by the techniques of powder X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy. The possible formation mechanisms of PbWO{sub 4} samples of various morphologies were discussed. The luminescence properties of the final products were investigated and the as-prepared PbWO{sub 4} microcrystals showed special room-temperature photoluminescence intensity compared to the solid structures.

• OSTI ID: 21199682
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 2 Vol. 44; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTALS
LEAD TUNGSTATES
MICROSTRUCTURE
MICROWAVE RADIATION
MORPHOLOGY
PH VALUE
PHOTOLUMINESCENCE
SCANNING ELECTRON MICROSCOPY
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION