کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1473182 | 991031 | 2014 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and photocatalytic properties of α-ZnWO4 nanocrystals in tungsten zinc borate glasses Synthesis and photocatalytic properties of α-ZnWO4 nanocrystals in tungsten zinc borate glasses](/preview/png/1473182.png)
Tungsten oxide (WO3)-containing glasses of WO3–ZnO–B2O3 were prepared using a conventional melt quenching method, and α-ZnWO4 nanocrystals were synthesized through the crystallization of glasses. A glass with the composition of 20WO3–50ZnO–30B2O3 showed the bulk crystallization of α-ZnWO4 nanocrystals with a diameter of ∼10 nm. Broad and asymmetric emission peaks were observed at the wavelength of λ ∼ 475 nm, i.e., blue emissions, in the photoluminescence spectra for the samples with α-ZnWO4 nanocrystals. From the degradation of the intensity of optical absorption under ultraviolet light (λ = 254 nm) irradiations for the solution consisting of crystallized particles with α-ZnWO4 nanocrystals and methylene blue, it was clarified that α-ZnWO4 nanocrystals formed have photocatalytic activities. The formation of α-ZnWO4 nanocrystals is discussed from the viewpoint of the glass-forming tendency.
Journal: Journal of Asian Ceramic Societies - Volume 2, Issue 3, September 2014, Pages 253–257