Chemically functionalized 3D graphene hydrogel for high performance gas sensing
Abstract
A one-step synthesized and chemically functionalized 3D graphene hydrogel is exploited for highly selective and sensitive NO 2 and CO 2 sensing.
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Recent studies have reported the use of hydrogels as the sensitive material for gas-sensing applications such as NO2, NH3, CO2, and O2.
“Recent studies have reported the use of hydrogels as the sensitive material for gas-sensing applications, such as NO2, NH3, CO2, and O2”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as [74]
The FRGOH device exhibits nearly twice as high response to CO2 (1.65% response to 1,000 ppm CO2) with a lower detection limit (20 ppm) compared to the unmodified RGOH sensor.
“The FRGOH device exhibits nearly twice as high response to CO2 (1.65% response to 1,000 ppm CO2) with a lower detection limit (20 ppm) compared to the unmodified RGOH sensor.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as Wu et al. [74]
When CO2 is adsorbed on the hydrogel surface, the highest occupied molecular orbital (HOMO) is above the Fermi energy level of RGO; charge transfers from CO2 to RGO by hybridization with RGO orbitals, increasing hole concentration in RGO and decreasing the resistance of the hydrogel.
“When CO2 is adsorbed on the hydrogel surface, the highest occupied molecular orbital (HOMO) is above the Fermi energy level of the RGO. The charge is transferred from CO2 to RGO by mixing (hybridization) with RGO orbitals, leading to an increase in the charge (hole) concentration in the RGO and a decrease in the resistance of the hydrogel.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as Wu et al. [74]
This hydrogel CO2 sensor is not tolerant to high temperatures, and an increase in temperature reduces the response of the device.
“However, this hydrogel CO2 sensor is not tolerant to high temperatures and an increase in temperature will reduce the response of the device.”
From Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors. (2023) · cites this paper as Wu et al. [74]
Cited by
Sorted by citations
Functionalized Hydrogel-Based Wearable Gas and Humidity Sensors.
Luo, Y., Li, J., Ding, Q., Wang, H., Liu, C., & Wu, J. (2023) · Nano-Micro Letters · doi:10.1007/s40820-023-01109-2 · Cited by 236 · see citing works
“Wu et al. [74] have developed a hydrogel material that can directly respond to CO 2 .”
BackgroundSelf-citationWu, J., Wu, Z., Han, S., Yang, B.-R., Gui, X., Tao, K., Liu, C., Miao, J., & Norford, L. K. (2019) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.8b17437 · Cited by 225 · see citing works
Self-citation
- Authors
- Wu, J., Tao, K., Zhang, J., Guo, Y., Miao, J., & Norford, L. K.
- Affiliations
- Nanyang Technological University (SG)
- Singapore-MIT Alliance for Research and Technology (SG)
- Corresponding author
- Miao, Jianmin
- Venue
- Journal of Materials Chemistry A
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2016
- Volume
- 4
- Issue
- 21
- Pages
- 8130-8140
- ISSN
- 2050-7488 (ISSN-L)
- 2050-7496
- OpenAlex
- W2342035903
- Cited by
- 117
- References
- 0
- Citations by year
- 2026: 2 · 2025: 8 · 2024: 7 · 2023: 10 · 2022: 7 · 2021: 15 · 2020: 16 · 2019: 21 · 2018: 15 · 2017: 14 · 2016: 2
- FWCI
- 8.00
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Materials Chemistry A (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Gas Sensing Nanomaterials and Sensors
- Physical Sciences › Materials Science › Materials Chemistry › Graphene research and applications
- Physical Sciences › Environmental Science › Environmental Engineering › Air Quality Monitoring and Forecasting
- Keywords
- graphene hydrogel, three-dimensional graphene, chemical functionalization, gas sensing, NO2 gas sensing, carbon dioxide detection, gas sensors, one-step synthesis, selective gas sensing
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