化工矿物与加工2025，Vol.54Issue(1)：32-38,7.DOI:10.16283/j.cnki.hgkwyjg.2025.01.005
基于热膨胀-超声剥离法的二维蛭石片高效制备
Efficient preparation of two-dimensional vermiculite flakes based on thermal expansion-ultrasonic stripping method
摘要
Abstract
Two-dimensional vermiculite sheets(2D-V)have shown great application potential in the fields of envi-ronmental governance,energy storage and catalysis due to their excellent thermal stability,adsorption performance and ion exchange capacity.In this paper,the optimum conditions for the preparation of 2D-V by thermal expansion-ultrasonic stripping method were discussed.The expanded and exfoliated vermiculite were characterized by scanning electron microscopy,physical adsorption test,X-ray diffraction and other methods.The results show that the opti-mum thermal expansion temperature is 700℃and the expansion time is 300 s.At this time,the expansion rate of vermiculite can reach 6.32 times of the original volume,which provide a good structural basis for ultrasonic stripping.After high-speed stirring for 30 min,ultrasonic treatment for 180 min,and standing precipitation for 12 h,2D-V is successfully prepared with a yield of 22.5%.The prepared 2D-V has ultra-thin thickness,large specific surface area and mesoporous structure.The research results provide an economical and feasible new method for the efficient prepa-ration of 2D-V.关键词
蛭石/二维材料/热膨胀/超声剥离/表征/纳米片/结构层Key words
vermiculite/two-dimensional materials/thermal expansion/ultrasonic stripping/characterization/nanosheets/structural layer分类
通用工业技术引用本文复制引用
王淳,赵白航,张宝玉..基于热膨胀-超声剥离法的二维蛭石片高效制备[J].化工矿物与加工,2025,54(1):32-38,7.基金项目
国家自然科学基金项目(51978009). （51978009）
