Etching Mechanism of Ti_(3)C_(2)Cl_(2) MXene Phases by CuCl_(2)-Lewis Molten Salt Method  

作　　者：严明 ZHU Yu HUANG Jiangtao CHEN Haoyu DENG Yuxiao CHEN Yanlin 王娟 Jan-Michael Albina YAN Ming;ZHU Yu;HUANG Jiangtao;CHEN Haoyu;DENG Yuxiao;CHEN Yanlin;WANG Juan;Jan-Michael Albina(Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology,Wuhan 430068,China;New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base,Hubei University of Technology,Wuhan 430068,China;Hubei Longzhong Laboratory,Xiangyang 441000,China)

机构地区：[1]Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology,Wuhan 430068,China [2]New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base,Hubei University of Technology,Wuhan 430068,China [3]Hubei Longzhong Laboratory,Xiangyang 441000,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2024年第4期863-868,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation for Young Scholars of China(No.51302073);the Hubei Provincial Key Laboratory of Green Materials for Light Industry;Hubei University of Technology(No.202307B07)。

摘　　要：We described a method for obtaining fluorine-free Ti_(3)C_(2)Cl_(2)MXene phases by melting copper in CuCl_(2)instead of aluminum in Ti_(3)AlC_(2).XRD results show that when molten salt CuCl_(2)etches Ti_(3)AlC_(2),it forms an intermediate product Ti_(3)CuC_(2),and then reacts with Ti_(3)CuC_(2)to obtain Ti_(3)C_(2)Cl_(2).The reaction of Ti_(3)AlC_(2)and CuCl_(2)at a temperature of 800℃for 2 h to obtain Ti_(3)C_(2)Cl_(2)with an optimal lamellar structure is shown in SEM results.The pseudopotential plane-wave(PP-PW)method is used to calculate on the electronic structure.The etching mechanism is investigated by the total energies of each substance.The chemical reaction of Ti_(3)AlC_(2)and CuCl_(2)will first become Ti_(3)CuC_(2)and Cu,and then become Ti_(3)C_(2)Cl_(2)during the Lewis acid etching process,which are consistent with the experimental results.

关 键 词：molten salt method CuCl_(2) MXene first-principles calculations etching mechanism 

分 类 号：TB34[一般工业技术—材料科学与工程]