HEDP-capped Terbium Orthophosphate Nanoparticles as Sensitive Luminescent Probes for the Detection of Pb2+ Ions |
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| Authors: | WANG Xi HAN Bin GAO Yan WANG Li BAI Ming |
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| Institution: | 1. Marine College, Shandong University, Weihai, Weihai 264209, P. R. China;
2. School of Mechanical Electrical &Information Engineering, Shandong University, Weihai, Weihai 264209, P. R. China |
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| Abstract: | Terbium orthophosphate nanoparticles were synthesized using 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP) as a capping ligand under hydrothermal conditions at 80℃. 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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| Keywords: | Lanthanide nanoparticle Hydrothermal synthesis Detection of Pb2+ Luminescent probe |
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