Hierarchical Porous Aggregate-Enabled Chromatography-Inspired Single-Sensor E-Nose for Volatile Monitoring
Monitoring volatile organic compounds (VOCs) is crucial for ensuring safety and health. In this study, we introduce a strategy to engineer a chromatography-inspired single-sensor (CISS) e-nose tailored for VOC monitoring. This approach overcomes the limitations of traditional methodologies and conventional e-noses. A hierarchical porous multicomponent aggregate, named CuP@G, was initially developed as the sole sensor material. This aggregate integrates a Cu<sup>2+</sup>-polydopamine (CuP) network with reduced graphene oxide, enhancing its chemoresistive properties. Using laser processing, we fabricated a grooved laser-induced graphene interdigitated electrode that is loaded with CuP@G ink and subsequently integrated into a compact laser-engraved microchamber. This process results in the production of the CISS e-nose. Notably, this e-nose enables swift, reversible, and precise detection of various VOCs using a time-space-resolved methodology. The developed module, known for its affordability and portability, is especially suitable for the point-of-care testing (POCT) of VOCs. Consequently, our research advances the development of streamlined cost-effective e-noses that are essential for proficient VOC monitoring.
Authors
- Taoping Liu (ORCID: https://orcid.org/0000-0003-3827-7489)
- Xingchun Zhai
- Shi-Fan Xue
- Haowen Guo (ORCID: https://orcid.org/0000-0002-1901-3958)
- Yongheng Zhang (ORCID: https://orcid.org/0000-0003-3716-4669)
- Min Zhang (ORCID: https://orcid.org/0000-0001-5108-1275)
- Guoyue Shi (ORCID: https://orcid.org/0000-0002-5900-2209)
- Zhuohua Qu (ORCID: https://orcid.org/0000-0001-9241-9332)
- Tan‐Phat Huynh (ORCID: https://orcid.org/0000-0002-7408-7669)
- Junjie Li (ORCID: https://orcid.org/0000-0003-4542-300X)
- Junjie Wen (ORCID: https://orcid.org/0009-0003-5965-7226)
- Jing Tang (ORCID: https://orcid.org/0000-0003-2645-2032)
- Guijun Li (ORCID: https://orcid.org/0000-0001-6259-3209)
Institutions
- Åbo Akademi University (FI)
- Xidian University (CN)
- Hong Kong University of Science and Technology (HK)
- China Tobacco (CN)
- Integra (United States) (US)
- Center for Integrated Smart Sensors (KR)
- Obstetrics and Gynecology Hospital of Fudan University (CN)
- East China Normal University (CN)
- University of Hong Kong (HK)
Publication Details
- Journal
- ACS Sensors
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1021/acssensors.4c03231
- Citations
- 12
- Primary Topic
- Advanced Chemical Sensor Technologies
- Type
- article
- Field-Weighted Citation Impact
- 8.09
Funders
- National Natural Science Foundation of China
- Science and Technology Commission of Shanghai Municipality
- Natural Science Foundation of Chongqing
- Centre Scientifique et Technique du Bâtiment