Journal article
An investigation into the factors governing the oxidation of two-dimensional Ti 3 C 2 MXene
Nanoscale, v 11(17), pp 8387-8393
25 Apr 2019
PMID: 30984957
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Two-dimensional (2D) transition metal carbides (MXenes) exhibit outstanding performances in many applications, such as energy storage, optoelectronics, and electrocatalysts. However, colloidal solutions of Ti3C2Tx MXene flakes deteriorate rapidly under ambient conditions due to the conversion of the titanium carbide to titanium dioxide. Here, we discuss the dominant factors influencing the rate of oxidation of Ti3C2Tx MXene flakes, and present guidelines for their storage with the aim of maintaining the intrinsic properties of the as-prepared material. The oxidation stability of the Ti3C2Tx flakes is dramatically improved in a system where water molecules and temperature were well-controlled. It was found that aqueous solutions of Ti3C2Tx MXene can be chemically stable for more than 39 weeks when the storage temperature (-80 °C) is sufficiently low to cease the oxidation processes. It was also found that if the Ti3C2Tx flakes are dispersed in ethanol, the degradation process can be significantly delayed even at 5 °C. Moreover, the oxidation stability of the Ti3C2Tx flakes is dramatically improved in both cases, even in the presence of oxygen-containing atmosphere. We demonstrate practical applications of our approach by employing Ti3C2Tx in a gas sensor showing that when oxidation is inhibited, the device can retain the original electrical properties after 5 weeks of storage.
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Details
- Title
- An investigation into the factors governing the oxidation of two-dimensional Ti 3 C 2 MXene
- Creators
- Yoonjeong Chae - Global Nanotechnology Development Team, National Nano Fab Center (NNFC), Daejeon 34141, South Korea. cwahn@nnfc.re.kr yhlee@nnfc.re.krSeon Joon Kim - Department of Materials Science and Engineering, and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USA and Wearable Platform Materials Technology Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South KoreaSoo-Yeon Cho - Department of Chemical and Biomolecular Engineering (BK-21 Plus), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea and KAIST Institute for the NanoCentury, Daejeon 34141, South KoreaJunghoon Choi - Department of Chemical and Biomolecular Engineering (BK-21 Plus), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South KoreaKathleen Maleski - Department of Materials Science and Engineering, and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAByeong-Joo Lee - Global Nanotechnology Development Team, National Nano Fab Center (NNFC), Daejeon 34141, South Korea. cwahn@nnfc.re.kr yhlee@nnfc.re.krHee-Tae Jung - Department of Chemical and Biomolecular Engineering (BK-21 Plus), Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea and KAIST Institute for the NanoCentury, Daejeon 34141, South KoreaYury Gogotsi - Department of Materials Science and Engineering, and A.J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, PA 19104, USAYonghee Lee - Global Nanotechnology Development Team, National Nano Fab Center (NNFC), Daejeon 34141, South Korea. cwahn@nnfc.re.kr yhlee@nnfc.re.krChi Won Ahn - Global Nanotechnology Development Team, National Nano Fab Center (NNFC), Daejeon 34141, South Korea. cwahn@nnfc.re.kr yhlee@nnfc.re.kr
- Publication Details
- Nanoscale, v 11(17), pp 8387-8393
- Publisher
- Royal Society of Chemistry; England
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000466774500031
- Scopus ID
- 2-s2.0-85064897852
- Other Identifier
- 991014969882404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied