SrF_(2):Tb^(3+)的水热合成及其对Fe^(3+)离子检测研究  

Hydrothermal Synthesis of SrF_(2):Tb^(3+)for Selective Detection of Fe 3+Ions

作　　者：王智毅 王冬梅[1] 胡珊珊 杨骏[1] WANG Zhiyi;WANG Dongmei;HU Shanshan;YANG Jun(School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China)

机构地区：[1]西南大学化学化工学院,重庆北碚400715

出　　处：《聊城大学学报（自然科学版）》2023年第6期35-40,共6页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(52172154)资助。

摘　　要：采用水热法一步合成了一系列SrF_(2):Tb^(3+)荧光粉,对其物相结构以及发光性质进行了表征。发现在Fe^(3+)的存在下Tb^(3+)的荧光会明显猝灭,因此SrF_(2):Tb^(3+)可作为荧光探针检测Fe^(3+)离子。通过检测1×10-5~6×10-5mol/L浓度范围的Fe^(3+)溶液,确定了荧光探针荧光强度与Fe^(3+)浓度之间的线性关系,计算得到了检出限为1.73×10-7mol/L。此外,SrF_(2):Tb^(3+)荧光探针在检测Fe^(3+)时具有较好的选择性与抗干扰性,最后对实际水样进行了检测,测得湖水与自来水中Fe^(3+)的浓度分别为9.15μmol/L和11.80μmol/L。A series of SrF_(2):Tb^(3+)phosphors were synthesized in one step by hydrothermal method,and their physical structure and luminescence properties were characterized.The fluorescence of Tb^(3+)in the presence of Fe 3+was found to be significantly burst,and thus SrF_(2):Tb^(3+)could be used as a fluorescent probe for the detection of Fe 3+.The linear relationship between the fluorescence intensity of the fluorescent probe and Fe 3+concentration was determined in the concentration range of 1×10-5~6×10-5 mol/L,and the detection limit was calculated to be 1.73×10-7 mol/L.In addition,the fluorescent probe was found to have good selectivity and interference resistance in the detection of Fe 3+.Finally,the detection was carried out on actual water samples,and the concentrations of Fe 3+in the lake water and tap water were measured to be 9.15μmol/L and 11.80μmol/L,respectively.

关 键 词：荧光探针 Fe^(3+)检测 氟化物 水热合成 荧光猝灭 

分 类 号：O644.1[理学—物理化学]