Abstract
Terbium orthophosphate nanoparticles were synthesized using 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP) as a capping ligand under hydrothermal conditions at 80 °C. These HEDP-capped TbPO4 nanoparticles owned a hexagonal phase structure according to the powder X-ray diffraction(XRD) results and were spherical monodispersed particles with a diameter of about 10 nm confirmed by transimission electron microscope(TEM) images. Interestingly, the luminescent intensities of the HEDP-capped TbPO4 nanoparticles decreased obviously in the presence of Pb2+ ions and such a quenching behavior of luminescence was well fitted by the Stern-Volmer equation.
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Supported by the Natural Science Foundation of Shandong Province, China(Nos.ZR2015PB003, ZR2014BM016) and the China Postdoctoral Science Foundation(No.2015M572012).
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Wang, X., Han, B., Gao, Y. et al. HEDP-capped terbium orthophosphate nanoparticles as sensitive luminescent probes for the detection of Pb2+ ions. Chem. Res. Chin. Univ. 32, 325–328 (2016). https://doi.org/10.1007/s40242-016-6005-x
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DOI: https://doi.org/10.1007/s40242-016-6005-x