High Surface Area MoS 2 /Graphene Hybrid Aerogel for Ultrasensitive NO 2 Detection
Open accessAbstract
A MoS 2 /graphene hybrid aerogel synthesized with two‐dimensional MoS 2 sheets coating a high surface area graphene aerogel scaffold is characterized and used for ultrasensitive NO 2 detection. The combination of graphene and MoS 2 leads to improved sensing properties with the graphene scaffold providing high specific surface area and high electrical and thermal conductivity and the single to few‐layer MoS 2 sheets providing high sensitivity and selectivity to NO 2 . The hybrid aerogel is integrated onto a low‐power microheater platform to probe the gas sensing performance. At room temperature, the sensor exhibits an ultralow detection limit of 50 ppb NO 2 . By heating the material to 200 °C, the response and recovery times to reach 90% of the final signal decrease to <1 min, while retaining the low detection limit. The MoS 2 /graphene hybrid also shows good selectivity for NO 2 against H 2 and CO, especially when compared to bare graphene aerogel. The unique structure of the hybrid aerogel is responsible for the ultrasensitive, selective, and fast NO 2 sensing. The improved sensing performance of this hybrid aerogel also suggests the possibility of other 2D material combinations for further sensing applications.
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When compared to graphene precursor aerogels, the hybrid graphene/MoS2 conductive aerogel had a higher surface area and 10 times lower HER current when tested for catalytic activity.
“When compared to graphene precursor aerogels, the hybrid graphene/MoS2 conductive aerogel had a higher surface area and 10 times lower HER current when tested for catalytic activity.”
From Three-Dimensional Printed MoS<sub>2</sub>/Graphene Aerogel Electrodes for Hydrogen Evolution Reactions (2022) · cites this paper as [16]
The Abstract reports a graphene aerogel surface area of 1200 m²/g, while Results and Discussion gives 700 m²/g for the MoS₂/graphene hybrid—the opposite of the claimed comparison. The paper discusses NO₂ sensing and mentions earlier work on hydrogen-evolution catalysis, but does not report a tenfold difference in HER current. (LLM, conf=0.88)
Checked by a reasoning model — may be wrong.
Experimental — accuracy not yet measuredPrevious works have shown a straightforward method for using the architecture of a precursor graphene aerogel to generate multilayer dichalcogenide aerogels.
“Previous works have shown a straightforward method for using the architecture of a precursor graphene aerogel to generate multilayer dichalcogenide aerogels.15,16”
From Three-Dimensional Printed MoS<sub>2</sub>/Graphene Aerogel Electrodes for Hydrogen Evolution Reactions (2022) · cites this paper as [16]
The Synthesis Methods and Results and Discussion describe using a precursor graphene aerogel as a scaffold to make a MoS₂/graphene hybrid aerogel. They do not establish the broader claim about multilayer dichalcogenide aerogels: the reported MoS₂ coating consists of one- to three-layer sheets, mainly monolayer, and the product retains the graphene scaffold. (LLM, conf=0.85)
Experimental — accuracy not yet measured
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- Authors
- Long, H., Harley‐Trochimczyk, A., Pham, T., Tang, Z., Shi, T., Zettl, A., Carraro, C., Worsley, M. A., & Maboudian, R.
- Affiliations
- State Key Laboratory of Digital Manufacturing Equipment and Technology (CN)
- University of California, Berkeley (US)
- Lawrence Berkeley National Laboratory (US)
- Lawrence Livermore National Laboratory (US)
- Corresponding author
- Maboudian, Roya
- ORCID
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2016-05-23
- Volume
- 26
- Issue
- 28
- Pages
- 5158-5165
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2406732376
- Cited by
- 479
- References
- 50
- Citations by year
- 2026: 25 · 2025: 37 · 2024: 58 · 2023: 54 · 2022: 40 · 2021: 54 · 2020: 69 · 2019: 60 · 2018: 40 · 2017: 34 · 2016: 7
- FWCI
- 21.68
- Type
- journal article
- Language
- en
- Open access
- green
- www.osti.gov
- Locations
- Advanced Functional Materials (publishedVersion)
- OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- National Science Foundation (DEAC02-05CH11231, 1444950)
- U.S. Department of Energy (-AC02-05CH11231, 05CH11231, DE AC02 05CH11231, DE-AC02-)
- British Society for Antimicrobial Chemotherapy
- China Scholarship Council (DE-AC02-05CH11231)
- Office of Science (DEAC02–05CH11231, AC02-05CH11231, DE-AC02)
- Basic Energy Sciences (DE-AC02, DE-AC02-05CH11231., AC02–05CH11231)
- Lawrence Livermore National Laboratory (DE-AC02-05CH11231)
- Lawrence Berkeley National Laboratory (AC02‐05CH11231, DE-AC02-05CH11231, 05CH11231)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Gas Sensing Nanomaterials and Sensors
- Physical Sciences › Environmental Science › Environmental Engineering › Air Quality Monitoring and Forecasting
- Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
- Keywords
- NO2 gas sensing, room-temperature gas sensors, two-dimensional materials, graphene aerogel, MoS2, detection limit, selectivity, response and recovery time
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