Abstract
Green-emitting Mn[Formula: see text] -doped zinc silicate nanophosphor was synthesized by solvothermal method with the assistance of polyvinyl alcohol (PVA). The structure, morphology and optical properties of phosphors were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Scanning electron microscope (SEM), Fourier transform infrared spectrometer (FT-IR) and Photoluminescence Spectroscopy (PL). Also, the application of Mn[Formula: see text] -doped zinc silicate phosphor in electronic devices was studied. Furthermore, Zn2SiO4: Mn[Formula: see text] phosphor was used to be a fluorescent sensor for the first time to detect inorganic ions and small molecules. The results indicated that pure [Formula: see text]-Zn2SiO4 phase nanoparticles with spherical morphology were obtained. The results also showed that the phosphor has excellent selectivity and sensitivity for detecting Cr[Formula: see text] ions, Cr2O7[Formula: see text] ions and 4-nitrophenol (4-NP) with low detection limits (Cr[Formula: see text] ions: 1.34 [Formula: see text]M, Cr2O7[Formula: see text] ions: 5.86 [Formula: see text]M, 4-NP: 2.38 [Formula: see text]M). Thus, Mn[Formula: see text] -doped zinc silicate manganese phosphor has potential applications in light-emitting diodes (LEDs) and fluorescent sensors.
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