Uniform YF3 nanorods composed of nanoparticles were successfully prepared via a facile solvothermal method with ethanol as solvent and tetrabutyl ammonium fluoride（TBAF） as fluorine source.The products were characte...Uniform YF3 nanorods composed of nanoparticles were successfully prepared via a facile solvothermal method with ethanol as solvent and tetrabutyl ammonium fluoride（TBAF） as fluorine source.The products were characterized with powder X-ray diffraction（XRD）,scanning electron microscopy（SEM） and transmission electron microscopy（TEM）.The nanorods were with diameters of ca.60 nm and lengths ranging from 200 to 350 nm.Eu3＋ and Tb3＋ doped YF3 nanorods were also prepared and their photoluminescence properties were investigated.Cytotoxicity study revealed that these YF3 based nanorods were biocompatible.展开更多
基金Project supported by the China Postdoctoral Science Foundation (20100470841)the Natural Science Foundation of Jiangxi Province (2009GQH0057,2010BJB01100)
文摘Uniform YF3 nanorods composed of nanoparticles were successfully prepared via a facile solvothermal method with ethanol as solvent and tetrabutyl ammonium fluoride（TBAF） as fluorine source.The products were characterized with powder X-ray diffraction（XRD）,scanning electron microscopy（SEM） and transmission electron microscopy（TEM）.The nanorods were with diameters of ca.60 nm and lengths ranging from 200 to 350 nm.Eu3＋ and Tb3＋ doped YF3 nanorods were also prepared and their photoluminescence properties were investigated.Cytotoxicity study revealed that these YF3 based nanorods were biocompatible.
文摘目的调查2010-2013年黄河水系济南段泺口断面及小清河历下亭断面水体的40K放射性水平。方法按照《水中钾-40的分析方法》(GB 11338-89)原子吸收法的国家标准方法。结果 2010-2013年黄河水系济南段泺口断面水体的40K放射性活度浓度范围为(104~149)m Bq/L,平均值为130 m Bq/L;小清河历下亭断面水体的40K放射性活度浓度范围为(46~94)m Bq/L,平均值为62 m Bq/L。结论黄河水系济南段水体中的40K放射性水平处于正常本底范围内。
