Kinetics of aluminum extraction from Ti3AlC2 in hydrofluoric acid

被引：389

作者：

Mashtalir, Olha ^{[1
,2
]}

Naguib, Michael ^{[1
,2
]}

Dyatkin, Boris ^{[1
,2
]}

Gogotsi, Yury ^{[1
,2
]}

Barsoum, Michel W. ^{[1
]}

机构：

[1] Drexel Univ, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[2] Drexel Univ, AJ Drexel Nanotechnol Inst, Philadelphia, PA 19104 USA

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2013年 / 139卷 / 01期

基金：

美国国家科学基金会;

关键词：

Carbide; Multilayer; Nanostructure; Etching; LITHIUM-ION BATTERIES; SINGLE-LAYER MOS2; MAX PHASES; M(N+1)AX(N) PHASES; TIO2; FILMS; GRAPHITE; TEMPERATURE; TRANSISTORS; OXIDATION; CRYSTALS;

D O I：

10.1016/j.matchemphys.2013.01.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Herein we report on the influence of particle size, time and temperature on the kinetics quantified by X-ray diffraction - of the selective extraction of Al from the ternary layered transition metal carbide, Ti3AlC2, when powders of the latter are immersed in hydrofluoric acid. Transmission and scanning electron microscopy, energy-dispersive X-ray spectroscopy and thermogravimetric analysis were also used to characterize the resulting powders. Increasing the temperature and immersion times, and decreasing the Ti3AlC2 particle size, led to faster conversion of Ti3AlC2 to its 2-D Ti3C2 counterpart. Arch-shaped edges at the ends of some Ti3C2 layers resembled graphene, corroborating the single-sheet structure of exfoliated Ti3C2. The removal of water and/or OH surface groups from Ti3C2 using drying in vacuum was also attempted. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：147 / 152

页数：6

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