Journal article
Kinetics of aluminum extraction from Ti3AlC2 in hydrofluoric acid
Materials chemistry and physics, v 139(1), pp 147-152
15 Apr 2013
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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.
► Exfoliation of Ti3AlC2 by immersion in hydrofluoric acid. ► The exfoliation is a time, temperature and initial particle size dependent process. ► Arch-shaped edge morphology of exfoliated Ti3C2 is reminiscent of graphene.
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Details
- Title
- Kinetics of aluminum extraction from Ti3AlC2 in hydrofluoric acid
- Creators
- Olha Mashtalir - Depart. of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USAMichael Naguib - Depart. of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USABoris Dyatkin - Depart. of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USAYury Gogotsi - Depart. of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USAMichel W Barsoum - Depart. of Materials Science & Engineering, Drexel University, Philadelphia, PA 19104, USA
- Publication Details
- Materials chemistry and physics, v 139(1), pp 147-152
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000316519900021
- Scopus ID
- 2-s2.0-84875224408
- Other Identifier
- 991014970048204721
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InCites Highlights
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- Web of Science research areas
- Materials Science, Multidisciplinary