Journal article
Low temperature solution synthesis of reduced two dimensional Ti 3 C 2 MXenes with paramagnetic behaviour
Nanoscale, v 10(47), pp 22429-22438
21 Dec 2018
PMID: 30475358
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
MXenes - two dimensional, 2D, early transition metal, M, carbides and nitrides, X - are the latest addition to the 2D materials' world. Herein, we report on a facile low temperature solution chemical synthesis method to reduce Ti
C
T
multilayered, ML, MXenes. Using X-ray photoelectron spectroscopy, electron spin resonance, magnetization measurements and other techniques, we concluded that immersing Ti
C
T
MLs in the reducing agent Li-ethylenediamine (Li-EDA) - held at temperatures varying from room to 120 °C - reduces the 2D layers creating Ti
ions and oxygen vacancies. Above a temperature (T) of ≈10 K, the magnetic susceptibilities, χ, are temperature independent, implying that the resulting powders are Pauli paramagnetic. The loss of the magnetic signal upon intercalation of Li
or EDA, together with a Curie-like increase in χ at T < 10 K, is consistent with that of a disordered metal that is close to a metallic to insulator transition and proves that the magnetism is associated with the 2D flakes. This result is the first evidence of any magnetism of any MXene.
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Details
- Title
- Low temperature solution synthesis of reduced two dimensional Ti 3 C 2 MXenes with paramagnetic behaviour
- Creators
- Yeoheung Yoon - Sungkyunkwan UniversityThi Anh Le - Sungkyunkwan UniversityAnand P Tiwari - Sungkyunkwan UniversityIkjoon Kim - Sungkyunkwan UniversityMichel W Barsoum - Drexel UniversityHyoyoung Lee - Sungkyunkwan University
- Publication Details
- Nanoscale, v 10(47), pp 22429-22438
- Publisher
- Royal Society of Chemistry
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000452490800031
- Scopus ID
- 2-s2.0-85058409978
- Other Identifier
- 991019167861704721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied