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A novel tri-doped Sr2SiO4: Ce3+, Tb3+, Yb3+ phosphor was prepared using a conventional solid reaction. The resonant energy transfer (ET) with Ce3+→ Tb3+ through electric dipole-dipole interactions was demonstrated with luminescent spectra and decay lifetime curves. Upon UV photon excitation at 372 nm of Tb3+ ions and 350 nm of Ce3+ ions, Yb3+ emissions were detected in the near-infrared (NIR) region...
In acidic medium, the oxidation reaction of cerium (IV) with iodide can produce strong chemiluminescence (CL) in the presence of surfactant tween 40 as an enhancer. On this basis, a flow injection method with CL detection was established for the determination of iodide. The method is simple, rapid and effective to determine iodide in the range of 8.0×10 −8 –5.0×10 −5 mol/L with a determination...
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