3D MoS2 Aerogel for Ultrasensitive NO2 Detection and Its Tunable Sensing Behavior
Abstract
A high-performance NO2 sensor based on the 3D MoS2 aerogel is introduced. Compared to single- or few-layer MoS2, 3D assemblies of 2D MoS2 provide more surface area per footprint with a simple and scalable synthesis. Integration of the 3D MoS2 aerogel on a low-power microheater platform is demonstrated, and the sensing behavior of the 3D MoS2 aerogel is investigated. A two-step sulfurization treatment is developed to obtain a high-quality MoS2 aerogel with strong sensing performance. The aerogel exhibits low detection limit (50 ppb) toward NO2 at room temperature, while after the two-step sulfurization treatment, it also exhibits fast response and recovery at low heater temperature of 200 °C, with no decrease in sensitivity. The observed p-type sensing behavior of MoS2 aerogel is discussed and identified as being controlled by the defect state (as probed by the S:Mo ratio). Furthermore, annealing in a hydrogen environment changes the defect state of the MoS2 aerogel by creating more sulfur vacancies; concomitantly, a transition from p-type sensing behavior to n-type sensing is observed
- Authors:
-
- Univ. of California, Berkeley, CA (United States); Huazhong Univ. of Science and Technology, Wuhan (China)
- Univ. of California, Berkeley, CA (United States)
- Huazhong Univ. of Science and Technology, Wuhan (China)
- Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)
- OSTI Identifier:
- 1548333
- Alternate Identifier(s):
- OSTI ID: 1376745
- Report Number(s):
- LLNL-JRNL-769872
Journal ID: ISSN 2196-7350; 960996
- Grant/Contract Number:
- AC52-07NA27344; AC02‐05CH11231; FA9550‐14‐1‐0323; AC02-05CH11231; KC2207
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Advanced Materials Interfaces
- Additional Journal Information:
- Journal Volume: 4; Journal Issue: 16; Journal ID: ISSN 2196-7350
- Publisher:
- Wiley-VCH
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; low power; microheaters; MoS2 aerogel; NO2 detection; p‐type sensing behavior
Citation Formats
Long, Hu, Chan, Leslie, Harley-Trochimczyk, Anna, Luna, Lunet E., Tang, Zirong, Shi, Tielin, Zettl, Alex, Carraro, Carlo, Worsley, Marcus A., and Maboudian, Roya. 3D MoS2 Aerogel for Ultrasensitive NO2 Detection and Its Tunable Sensing Behavior. United States: N. p., 2017.
Web. doi:10.1002/admi.201700217.
Long, Hu, Chan, Leslie, Harley-Trochimczyk, Anna, Luna, Lunet E., Tang, Zirong, Shi, Tielin, Zettl, Alex, Carraro, Carlo, Worsley, Marcus A., & Maboudian, Roya. 3D MoS2 Aerogel for Ultrasensitive NO2 Detection and Its Tunable Sensing Behavior. United States. https://doi.org/10.1002/admi.201700217
Long, Hu, Chan, Leslie, Harley-Trochimczyk, Anna, Luna, Lunet E., Tang, Zirong, Shi, Tielin, Zettl, Alex, Carraro, Carlo, Worsley, Marcus A., and Maboudian, Roya. Mon .
"3D MoS2 Aerogel for Ultrasensitive NO2 Detection and Its Tunable Sensing Behavior". United States. https://doi.org/10.1002/admi.201700217. https://www.osti.gov/servlets/purl/1548333.
@article{osti_1548333,
title = {3D MoS2 Aerogel for Ultrasensitive NO2 Detection and Its Tunable Sensing Behavior},
author = {Long, Hu and Chan, Leslie and Harley-Trochimczyk, Anna and Luna, Lunet E. and Tang, Zirong and Shi, Tielin and Zettl, Alex and Carraro, Carlo and Worsley, Marcus A. and Maboudian, Roya},
abstractNote = {A high-performance NO2 sensor based on the 3D MoS2 aerogel is introduced. Compared to single- or few-layer MoS2, 3D assemblies of 2D MoS2 provide more surface area per footprint with a simple and scalable synthesis. Integration of the 3D MoS2 aerogel on a low-power microheater platform is demonstrated, and the sensing behavior of the 3D MoS2 aerogel is investigated. A two-step sulfurization treatment is developed to obtain a high-quality MoS2 aerogel with strong sensing performance. The aerogel exhibits low detection limit (50 ppb) toward NO2 at room temperature, while after the two-step sulfurization treatment, it also exhibits fast response and recovery at low heater temperature of 200 °C, with no decrease in sensitivity. The observed p-type sensing behavior of MoS2 aerogel is discussed and identified as being controlled by the defect state (as probed by the S:Mo ratio). Furthermore, annealing in a hydrogen environment changes the defect state of the MoS2 aerogel by creating more sulfur vacancies; concomitantly, a transition from p-type sensing behavior to n-type sensing is observed},
doi = {10.1002/admi.201700217},
journal = {Advanced Materials Interfaces},
number = 16,
volume = 4,
place = {United States},
year = {Mon Jul 10 00:00:00 EDT 2017},
month = {Mon Jul 10 00:00:00 EDT 2017}
}
Web of Science
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