Enhancement of the electrical properties of MXene Ti3C2 nanosheets by post-treatments of alkalization and calcination

被引：233

作者：

Wang, Hongbing ^{[1
,2
]}

Wu, Yuping ^{[1
]}

Zhang, Jianfeng ^{[1
]}

Li, Gaiye ^{[1
]}

Huang, Huajie ^{[1
]}

Zhang, Xin ^{[1
]}

Jiang, Quanguo ^{[1
]}

机构：

[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China

[2] Nanjing Inst Technol, Dept Math & Phys, Nanjing 211167, Jiangsu, Peoples R China

来源：

MATERIALS LETTERS | 2015年 / 160卷

基金：

中国国家自然科学基金;

关键词：

Two-dimensional titanium carbide; Electrical properties; Calcination; Phase transformation; ELECTRONIC-PROPERTIES; STABILITY; CAPACITY; CARBIDES; LI;

D O I：

10.1016/j.matlet.2015.08.046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two-dimensional (20) MXene Ti-3-C-2 nanosheets are prepared by liquid phase exfoliation of layered Ti3AlC2 in aqueous solution of HF, followed by alkalization and calcination. The electrical properties of the as-prepared Ti3C2 nanosheets are investigated as a function of calcining temperatures to find the optimum process condition. The microstructures and structural changes of the MXene Ti-3-C-2 nanosheets are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It is found that the post-treatment processes could effectively remove the functional groups on the surface of 2D nanosheets to enhance the electrical properties of MXene Ti-3-C-2. As a result, the MXene Ti3C2 nanosheets after calcination at 600 degrees C exhibit a high conductivity of 2140 S/cm, nearly three times as high as that of the un-treated Ti3C2 samples. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：537 / 540

页数：4

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