Single Cu Atom Sites on Co <sub>3</sub> O <sub>4</sub> Activate Interfacial Oxygen for Enhanced Reactivity and Selective Gas Sensing at Low Temperature
and consistently outperforms state-of-the-art sensors. Formaldehyde is detected down to 5 parts-per-billion at 50% relative humidity and 75°C with excellent selectivity over critical interferents. These results establish a strategy for activating redox-active supports using single-atom isolates of non-noble nature, yielding drastically enhanced and well-defined reactivity to promote low-temperature oxidation reactions and selective analyte sensing.
Authors
- Andreas Thomas Güntner (ORCID: https://orcid.org/0000-0002-4127-752X)
- Meng Yin (ORCID: https://orcid.org/0009-0000-7163-3655)
- Frank Krumeich (ORCID: https://orcid.org/0000-0001-5625-1536)
- Matteo D’Andria (ORCID: https://orcid.org/0000-0002-8775-1573)
- Ken Suzuki
- Jaehyun Ko
- Hamin Shin (ORCID: https://orcid.org/0000-0001-8330-5448)
- Dong-Ha Kim
Institutions
- Tohoku University (JP)
- ETH Zurich (CH)
- Hanyang University (KR)
- Anyang University (KR)
Publication Details
- Journal
- Small
- Published
- 2026-04-13
- DOI
- https://doi.org/10.1002/smll.202600033
- Primary Topic
- Copper-based nanomaterials and applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung