Journal article
Metallic Ti 3 C 2 T x MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio
ACS nano, v 12(2), pp 986-993
27 Feb 2018
PMID: 29368519
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Achieving high sensitivity in solid-state gas sensors can allow the precise detection of chemical agents. In particular, detection of volatile organic compounds (VOCs) at the parts per billion (ppb) level is critical for the early diagnosis of diseases. To obtain high sensitivity, two requirements need to be simultaneously satisfied: (i) low electrical noise and (ii) strong signal, which existing sensor materials cannot meet. Here, we demonstrate that 2D metal carbide MXenes, which possess high metallic conductivity for low noise and a fully functionalized surface for a strong signal, greatly outperform the sensitivity of conventional semiconductor channel materials. Ti
C
T
MXene gas sensors exhibited a very low limit of detection of 50-100 ppb for VOC gases at room temperature. Also, the extremely low noise led to a signal-to-noise ratio 2 orders of magnitude higher than that of other 2D materials, surpassing the best sensors known. Our results provide insight in utilizing highly functionalized metallic sensing channels for developing highly sensitive sensors.
Metrics
Details
- Title
- Metallic Ti 3 C 2 T x MXene Gas Sensors with Ultrahigh Signal-to-Noise Ratio
- Creators
- Seon Joon KimHyeong-Jun KohChang E Ren - A.J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United StatesOhmin KwonKathleen Maleski - A.J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United StatesSoo-Yeon ChoBabak Anasori - A.J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United StatesChoong-Ki KimYang-Kyu ChoiJihan KimYury Gogotsi - A.J. Drexel Nanomaterials Institute, Drexel University , Philadelphia, Pennsylvania 19104, United StatesHee-Tae Jung
- Publication Details
- ACS nano, v 12(2), pp 986-993
- Publisher
- American Chemical Society; Washington, DC
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000426615600009
- Scopus ID
- 2-s2.0-85042658916
- Other Identifier
- 991014970147104721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
Highly Cited Paper
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology