Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (3): 325-328.doi: 10.1007/s40242-016-6005-x

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HEDP-capped Terbium Orthophosphate Nanoparticles as Sensitive Luminescent Probes for the Detection of Pb2+ Ions

WANG Xi1, HAN Bin1, GAO Yan1, WANG Li2, BAI Ming1   

  1. 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
  • Received:2016-01-06 Revised:2016-02-26 Online:2016-06-01 Published:2016-03-11
  • Contact: BAI Ming E-mail:ming_bai@sdu.edu.cn
  • Supported by:

    Supported by the Natural Science Foundation of Shandong Province, China(Nos.ZR2015PB003, ZR2014BM016) and the China Postdoctoral Science Foundation(No.2015M572012).

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.

Key words: Lanthanide nanoparticle, Hydrothermal synthesis, Detection of Pb2+, Luminescent probe