TỔNG HỢP, KHẢO SÁT TÍNH CHẤT QUANG VÀ HOẠT TÍNH XÚC TÁC QUANG CỦA VẬT LIỆU NANO ZnWO4:Eu3+, Al3+

Tóm tắt

Al3+ (2−8 mol%) sensitized ZnWO4:Eu3+(4 mol%) red emitting phosphors were synthesized by the
hydrothermal method. The samples were well crystallized in the pure monoclinic wolframite structure
with P2/c space group. The nanoparticals were characterized by X-ray diffraction (XRD), scanning
electron microscope (SEM), UV-Visible spectroscopy (UV-Vis) and photoluminescence (PL) properties.
The red emission of Eu3+ and Al3+ co-doped ZnWO4 under the excitation at 393 nm can be promissing
candidate for red phosphor materials for white LED (Light Emitting Diode). Moreover, the
photocatalyric activity of the samples were estimated against methylene blue (MB - cationic) dye
pollutant under ultra-violet (UV) lamp irradiation at room temperature. The dye remove efficiency of
approximately 98% offers an effective approach to remove organic contaminants in industrial
wastewater.