Superior Room-Temperature Gas Sensing Performance of Belt-like VO <sub>2</sub> (B) over 1D V <sub>2</sub> O <sub>5</sub> Nanofibers
Achieving reliable room-temperature detection of volatile organic compounds (VOCs) remains a challenge for developing low-power, high-performance gas sensors. In this work, belt-like VO<sub>2</sub>(B) single crystals with a strong (00<i>l</i>) (<i>l</i> = 1, 2, and 3) orientation were successfully synthesized via hydrothermal reduction of one-dimensional (1D) V<sub>2</sub>O<sub>5</sub> nanofibers. Comparative sensing evaluations demonstrate that VO<sub>2</sub>(B) exhibits improved selectivity and an approximately 19-fold higher response to ethanol at room temperature relative to 1D V<sub>2</sub>O<sub>5</sub> nanofibers. Density functional theory (DFT) calculations further reveal stronger ethanol adsorption and greater charge transfer on VO<sub>2</sub>(B) surfaces, elucidating the origin of its superior room-temperature sensing performance.
Authors
- W. Cao
- Takuya Hasegawa (ORCID: https://orcid.org/0000-0002-6170-5632)
- Lei Miao (ORCID: https://orcid.org/0000-0001-9466-0373)
- Shu Fan Yin
- Fu Tang (ORCID: https://orcid.org/0000-0001-5633-7305)
- Qiuyu Cheng (ORCID: https://orcid.org/0009-0001-4777-4391)
- Te-Wei Chiu
- Qiuyu Jin (ORCID: https://orcid.org/0009-0009-3578-4013)
- Kenta Hongo
- Ayahisa Okawa
- Tohru Sekino
- Peng Song
Institutions
- National Taipei University of Technology (TW)
- Japan Advanced Institute of Science and Technology (JP)
- Tohoku University (JP)
- University of Science and Technology Beijing (CN)
Publication Details
- Journal
- ACS Sensors
- Published
- 2026-02-16
- DOI
- https://doi.org/10.1021/acssensors.5c03743
- Primary Topic
- Gas Sensing Nanomaterials and Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.00