氧化石墨烯的氟化改性研究  

Study on Fluorination Modification of Graphene Oxide

作　　者：黄银纯 叶秀芳[1] 陈东初[1] HUANG Yin-chun;YE Xiu-fang;CHEN Dong-chu(School of Materials Science and Hydrogen Energy,Foshan University,Guangdong Foshan 528000,China)

机构地区：[1]佛山科学技术学院材料科学与氢能学院,广东佛山528000

出　　处：《广州化工》2024年第6期68-70,75,共4页GuangZhou Chemical Industry

基　　金：广东省科技计划项目(2020B121202002);广东省自然科学基金(2020A1515110238)。

摘　　要：针对氧化石墨烯氟化改性存在氟源危害性大的缺点,选取氟钛酸铵为氟源,采用水热法成功制备了氟化石墨烯,并研究硼酸的加入对氟化石墨烯结构、氟含量和表面形貌的影响。研究结果表明:硼酸的加入加快了氟钛酸铵的水解速度,促进氟离子和二氧化钛生成,令氟化石墨烯的氟含量从1.61%提升至3.36%,二氧化钛在氟化石墨烯表面分布,有利于降低氟化石墨烯的层间结合力。结合上述研究结果和氟钛酸铵水解反应方程式,描述了氟化改性机理。In view of fluoride source of graphene oxide(GO)hydrothermal fluorination process had high harmfulness,fluorinated graphene(FG)was successfully prepared by using ammonium hexafluorotitanate(AHFT)as fluoride source and using GO and boric acid as raw material.The effect of boric acid on the structure and composition of FG was studied.The results showed that the addition of boric acid accelerated the hydrolysis rate of AHFT,promote the formation of fluoride ions and TiO_(2),and increased the fluorine content of FG from 1.61%to 3.36%.The distribution of TiO_(2) on the surface of FG was beneficial to reduce the interlayer adhesion of FG.Combined with the above research results and the hydrolysis equation of AHFT,the fluorination modification mechanism was described.

关 键 词：氧化石墨烯 氟化改性 氟钛酸铵 水热法 氟化效率 

分 类 号：TQ124.3[化学工程—无机化工]