Journal article
Effect of Substitutional Oxygen on Properties of Ti3 C2 Tx MXene Produced Using Recycled TiO2 Source
Small methods, 2201715
28 Feb 2023
Abstract
MXenes are an emerging class of 2D materials with unique properties including metallic conductivity, mechanical flexibility, and surface tunability, which ensure their utility for diverse applications. However, the synthesis of MXenes with high crystallinity and atomic stoichiometry in a low-cost process is still challenging because of the difficulty in controlling the oxygen substitute in the precursors and final products of MXenes, which limits their academic understanding and practical applications. Here, a novel cost-effective method is reported to synthesize a highly crystalline and stoichiometric Ti3 C2 Tx MXene with minimum substitutional oxygen impurities by controlling the amount of excess carbon and time of high-energy milling in carbothermal reduction of recycled TiO2 source. The highest used content (2 wt%) of excess-carbon yields TiC with the highest carbon content and minimal oxygen substitutes, which leads to the Ti3 AlC2 MAX phase with improved crystallinity and atomic stoichiometry, and finally Ti3 C2 Tx MXene with the highest electrical conductivity (11738 S cm-1 ) and superior electromagnetic shielding effectiveness. Additionally, the effects of carbon content and substitutional oxygen on the physical properties of TiC and Ti3 AlC2 are elucidated by density-functional-theory calculations. This inexpensive TiO2 -based method of synthesizing high-quality Ti3 C2 Tx MXene can facilitate large-scale production and thus accelerate global research on MXenes.
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Details
- Title
- Effect of Substitutional Oxygen on Properties of Ti3 C2 Tx MXene Produced Using Recycled TiO2 Source
- Creators
- Aamir Iqbal - Sungkyunkwan UniversityHyerim Kim - Korea Institute of Science and TechnologyJung-Min Oh - R&D center, INNOMXENE Co., Ltd., Daejeon, 34365, Republic of Korea.Jikwang Chae - R&D center, INNOMXENE Co., Ltd., Daejeon, 34365, Republic of Korea.Jiwoong Kim - Soongsil UniversityMyungjae Kim - Soongsil UniversityTufail Hassan - Sungkyunkwan UniversityZhenguo Gao - Sungkyunkwan UniversityJuyun Lee - Korea Institute of Science and TechnologySeon Joon Kim - Korea Institute of Science and TechnologyDaesin Kim - Korea Institute of Science and TechnologyYury Gogotsi - Drexel UniversityHanjung Kwon - Jeonbuk National UniversityChong Min Koo - Sungkyunkwan University
- Publication Details
- Small methods, 2201715
- Publisher
- Wiley
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000940806400001
- Scopus ID
- 2-s2.0-85149291665
- Other Identifier
- 991020154603004721
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology