摘要
二硫化锡(SnS2)由于其具有储量丰富、光学性能独特、储锂/钠容量高等优点,在光电探测以及储能等领域研究中受到广泛关注。然而,SnS2纳米片的制备存在尺寸分布不均和分散性差等问题,同时SnS2纳米片结构的稳定性尚不明确。本文通过水热法制备了SnS2纳米片,分析了表面活性剂类型对材料分散度的影响。利用透射电子显微镜,原位研究了SnS2纳米材料的抗电子束辐照性能和热稳定性。实验发现,聚乙二醇能显著抑制SnS2纳米片的团聚。电子束辐照后,SnS2转变为SnS。当温度升高至325℃时,SnS2逐渐分解消失。该结果对于SnS2的可控制备及应用研究具有一定的指导意义。
Due to its rich reserves,unique optical properties,and high lithium/sodium storage capacity,tin disulfide(SnS2)has received extensive attention in the field of photodetection and materials research in energy storage.However,the preparation of SnS2 nanosheets has problems,such as uneven size distribution and poor dispersibility.In addition,the structural stability of SnS2 needs further research.In this paper,SnS2 nanosheets were prepared by hydrothermal method,and the effects of different surfactants on the dispersibility of the materials were compared.The effects of electron beam irradiation and temperature on the structural stability of SnS2 were investigated by using in situ transmission electron microscope.It was found that polyethylene glycol as a surfactant can significantly inhibit the agglomeration of SnS2 nanosheets.After electron beam irradiation,SnS2 is converted to SnS.When the temperature of the nanosheets rises to 325℃,SnS2 gradually decomposes and disappears.This result has certain guiding significance for the controllable preparation and application research of SnS2.
作者
辛磊
李京仓
熊雨薇
文一峰
朱明芸
尹奎波
孙立涛
XIN Lei;LI Jing-cang;XIONG Yu-wei;WEN Yi-feng;ZHU Ming-yun;YIN Kui-bo;SUN Li-tao(SEU-FEI Nano-Pico Center,Key Lab of MEMS of Ministry of Education,Southeast University,Jiangsu Nanjing 210096,China)
出处
《电子显微学报》
CAS
CSCD
北大核心
2019年第5期445-451,共7页
Journal of Chinese Electron Microscopy Society
基金
国家自然科学基金面上项目(No.11674052)
关键词
二硫化锡
透射电子显微镜
水热法
电子束辐照
tin disulfide
transmission electron microscope
hydrothermal method
electron beam irradiation
