Materials Research Bulletin p. 1783 - 1789 (2003)
Update date:2022-08-16
Topics:
Chen, Di
Shen, Guozhen
Tang, Kaibin
Zheng, Huagui
Qian, Yitai
In this paper, we report the low-temperature synthesis of metal tungstate, MWO4 (M=Ca, Sr, Ba, Cd, Zn, Pb) nanocrystallites. By reaction between metal chloride and sodium tungstate in ethylene glycol at 180°C for 10h, well-crystallized tungstate particles were successfully obtained. Characterization by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM) shows that the product powders consist of nanosize particles. Photoluminescence measurement reveals that the as-obtained CaWO4, CdWO4, and PbWO4 show excitonic peaks at about 430, 500 and 500nm, respectively. The solvent and reaction conditions are important in the formation of the products.
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