Journal article
Surface Modification of a MXene by an Aminosilane Coupling Agent
Advanced materials interfaces, v 7(6), pp 1902008-n/a
20 Mar 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes, two‐dimensional (2D) transition metal carbides and/or nitrides, possess surface termination groups such as hydroxyl, oxygen, and fluorine, which are available for surface functionalization. Their surface chemistry is critical in many applications. This article reports amine functionalization of Ti3C2Tx MXene surface with [3‐(2‐aminoethylamino)‐propyl]trimethoxysilane (AEAPTMS). Characterization techniques such as X‐ray photoelectron spectroscopy verify the success of the surface functionalization and confirm that the silane coupling agent bonds to Ti3C2Tx surface both physically and chemically. The functionalization changes the MXene surface charge from −35 to +25 mV at neutral pH, which allows for in situ preparation of self‐assembled films. Further, surface charge measurements of the functionalized MXene at different pH values show that the functionalized MXene has an isoelectric point at a pH around 10.7, and the highest reported positive surface charge of +62 mV at a pH of 2.58. Furthermore, the existence of a mixture of different orientations of AEAPTMS and the simultaneous presence of protonated and free amine groups on the surface of Ti3C2Tx are demonstrated. The availability of free amine groups on the surface potentially permits the fabrication of crosslinked electrically conductive MXene/epoxy composites, dye adsorbents, high‐performance membranes, and drug carriers. Surface modifications of this type are applicable to many other MXenes.
Surface functionalization of Ti3C2Tx with the aminosilane coupling agent through the hydroxyl groups on the Ti3C2Tx surface is presented herein.
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Details
- Title
- Surface Modification of a MXene by an Aminosilane Coupling Agent
- Creators
- Hossein Riazi - Drexel UniversityMark Anayee - Drexel UniversityKanit Hantanasirisakul - Drexel UniversityAhmad Arabi Shamsabadi - Drexel UniversityBabak Anasori - Drexel UniversityYury Gogotsi - Drexel UniversityMasoud Soroush - Drexel University
- Publication Details
- Advanced materials interfaces, v 7(6), pp 1902008-n/a
- Publisher
- Wiley
- Number of pages
- 8
- Grant note
- National Science Foundation (CBET‐1804285) Basic Energy Sciences (#DE-SC0018618) U.S. Department of Energy Office of Science
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; Chemical and Biological Engineering
- Web of Science ID
- WOS:000510449300001
- Scopus ID
- 2-s2.0-85078845208
- Other Identifier
- 991014969769604721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary