摘要
随着石墨烯材料的发现,二维材料被人们广泛认识并逐渐应用,相比于传统二维材料,二维过渡金属碳化物(MXene)的力学、磁学和电学性能更加优异.本文分别利用HF溶液和LiF/HCl溶液刻蚀Ti_(3)AlC_(2)获得了Ti3C2Tx样品,通过电子扫描显微镜(SEM)、X射线光电子能谱(XPS)和气敏特性分析,研究了刻蚀剂对Ti_(3)C_(2)Tx材料结构和气敏性能的影响.材料结构分析表明:HF和LiF/HCl刻蚀剂均对Ti_(3)C_(2)Tx材料具有良好的刻蚀效果;气敏性能结果表明:LiF/HCl刻蚀剂制备的Ti_(3)C_(2)Tx的气敏性能优于HF刻蚀剂,并实现了室温下宽范围、较高灵敏和较高稳定地检测NH3.分析认为:LiF/HCl溶液刻蚀制备的Ti_(3)C_(2)Tx材料表面具有较高比例的—O和—OH官能团,是其高传感性能的主要原因.本实验研究可为Ti_(3)C_(2)Tx基传感器件的气敏研究和实际应用奠定一定的理论基础.
Since the discovery of graphene materials,two-dimensional materials have been widely recognized and gradually applied.Two-dimensional transition metal carbides(MXenes)have better mechanical,magnetic and electrical properties than traditional two-dimensional materials.In this work,Ti_(3)C_(2)Tx samples are prepared by etching Ti_(3)AlC_(2) with different etching agents for the solutions of HF and LiF/HCl.The effects of etching agents on the structure and gas sensing properties of Ti_(3)C_(2)Tx materials are studied by scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),and gas sensing properties analysis.The material structure analysis shows that both HF and LiF/HCl etching agents have good etching effect on Ti_(3)C_(2)Tx material.The results of gas sensing properties show that the gas sensing properties of Ti_(3)C_(2)Tx prepared by LiF/HCl etching agent is better than by HF etching agent,and the wide range,high sensitivity and high stability of NH3 detection can be achieved at room temperature.The analysis shows that the high sensing performance of Ti_(3)C_(2)Tx prepared by LiF/HCl solution etching is mainly due to the high proportion of—O and—OH functional groups on the surface of Ti_(3)C_(2)Tx.The experimental studies can lay a theoretical foundation for studying the gas sensing and practical application of Ti_(3)C_(2)Tx based sensor.
作者
韩丹
刘志华
刘琭琭
韩晓美
刘东明
禚凯
桑胜波
Han Dan;Liu Zhi-Hua;Liu Lu-Lu;Han Xiao-Mei;Liu Dong-Ming;Zhuo Kai;Sang Sheng-Bo(Taiyuan University of Technology,College of information and computer,MicroNano System Research Center,Taiyuan 030600,China)
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第1期42-50,共9页
Acta Physica Sinica
基金
国家自然科学基金重点项目(批准号:62031022)和国家自然科学基金(批准号:51975400,61971301)资助的课题。
