球形氟化锶的控制合成研究  

Study on controllable synthesis of spherical strontium fluoride

作　　者：李筱 赵玉祥 李波[1,2] 邹兴武 王树轩[1,2] LI Xiao;ZHAO Yuxiang;LI Bo;ZOU Xingwu;WANG Shuxuan(Key Laboratory of Comprehensive and Highly Effificient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources;University of Chinese Academy of Sciences)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]青海省盐湖资源开发工程技术研究中心 [3]中国科学院大学

出　　处：《无机盐工业》2022年第5期67-71,共5页Inorganic Chemicals Industry

基　　金：青海省国家自然科学基金项目(No.2021-ZJ-965Q)。

摘　　要：以氢氧化锶和氟化铵为原料,柠檬酸三钠为络合剂,通过水热法制备出由纳米立方体自组装形成的球形氟化锶颗粒。考察了柠檬酸三钠与氢氧化锶物质的量比、氢氧化锶浓度和水热时间对产物物相及形貌的影响,并探讨其形成机理。采用扫描电镜(SEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)和X射线能谱分析(EDS)等手段对产物形貌和物相进行了表征。结果表明在柠檬酸三钠与氢氧化锶物质的量比为1∶1、氢氧化锶浓度为0.08 mol/L、水热时间为6 h条件下,制备的球形氟化锶形貌规整、粒径均一,过程中加入的柠檬酸三钠对球形结构的形成具有重要作用。Spherical SrF2 formed with nanocubes was successfully prepared by hydrothermal method,using strontium hydroxide and ammonium fluoride as raw materials,trisodium citrate as complexing agent.The effect of the molar ratio of trisodium citrate to strontium hydroxide,the concentration of strontium hydroxide,and the hydrothermal time on the phase and morphology of the product was investigated,and the formation mechanism was proposed.The morphology and phase of the product were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),fourier transform infrared spectroscopy(FT-IR)and X-ray energy spectroscopy(EDS).The results showed that the prepared spherical strontium fluoride had regular morphology and uniform size under molar ratio of the trisodium citrate to strontium hydroxide was 1∶1,the strontium hydroxide concentration of 0.08 mol/L and the hydrothermal time of 6 h,the trisodium citrate added in the process played an important role in the formation of the spherical structure.

关 键 词：氟化锶 球形结构 水热法 络合剂 

分 类 号：TQ132.33[化学工程—无机化工]