Superior Room-Temperature Gas Sensing Performance of Belt-like VO 2 (B) over 1D V 2 O 5 Nanofibers

ACS Sensors 2026 Open access

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Authors: Qiuyu Cheng, Lei Miao, Peng Song, Qiuyu Jin, Ayahisa Okawa, Takuya Hasegawa, Kenta Hongo, Fu Tang, W. Cao, Te-Wei Chiu, Tohru Sekino, Shu Fan Yin
DOI: 10.1021/acssensors.5c03743
Cited by: 1
References: 58

Abstract

High Resolution Image Download MS PowerPoint Slide 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 2 (B) single crystals with a strong (00 l ) ( l = 1, 2, and 3) orientation were successfully synthesized via hydrothermal reduction of one-dimensional (1D) V 2 O 5 nanofibers. Comparative sensing evaluations demonstrate that VO 2 (B) exhibits improved selectivity and an approximately 19-fold higher response to ethanol at room temperature relative to 1D V 2 O 5 nanofibers. Density functional theory (DFT) calculations further reveal stronger ethanol adsorption and greater charge transfer on VO 2 (B) surfaces, elucidating the origin of its superior room-temperature sensing performance.

Fields of Study & Subjects

Gas Sensing Nanomaterials and Sensors Transition Metal Oxide Nanomaterials Advanced Chemical Sensor Technologies

Publication details

Journal / source
ACS Sensors
Publisher
American Chemical Society (ACS)
Volume
11
Issue
2
Pages
1436–1446
Publication date
16 February 2026
Language
EN