标题：HEDP-capped Terbium Orthophosphate Nanoparticles as Sensitive Luminescent Probes for the Detection of Pb2+ Ions
作者：Wang Xi; Han Bin; Gao Yan; Wang Li; Bai Ming
作者机构：[Wang Xi] Marine College, Shandong University, Weihai, Shandong 264209, China.;[Han Bin] Marine College, Shandong University, Weihai, Shandong 264209, 更多
通讯作者地址：[Bai, M]Shandong Univ, Marine Coll, Weihai 264209, Peoples R China.
关键词：Lanthanide nanoparticle; Hydrothermal synthesis; Detection of Pb2+;; Luminescent probe
摘要：Terbium orthophosphate nanoparticles were synthesized using 1-hydroxy ethylidene-1,1-diphosphonic acid(HEDP) as a capping ligand under hydrothermal conditions at 80 degrees 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.