Related Experiment Video
Updated: Jun 25, 2026

Fabrication of VB2/Air Cells for Electrochemical Testing
Published on: August 5, 2013
Superior Room-Temperature Gas Sensing Performance of Belt-like VO2(B) over 1D V2O5 Nanofibers
Qiuyu Cheng1, Lei Miao1, Peng Song1
1Institute of Multidisciplinary Research for Advanced Material (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Abstract:
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 VO2(B) single crystals with a strong (00l) (l = 1, 2, and 3) orientation were successfully synthesized via hydrothermal reduction of one-dimensional (1D) V2O5 nanofibers. Comparative sensing evaluations demonstrate that VO2(B) exhibits improved selectivity and an approximately 19-fold higher response to ethanol at room temperature relative to 1D V2O5 nanofibers. Density functional theory (DFT) calculations further reveal stronger ethanol adsorption and greater charge transfer on VO2(B) surfaces, elucidating the origin of its superior room-temperature sensing performance.
Related Concept Videos
Noble Gases
The elements in group 18 are noble gases (helium, neon, argon, krypton, xenon, and radon). They earned the name “noble” because they were assumed to be nonreactive since they have filled valence shells. In 1962, Dr. Neil Bartlett at the University of British Columbia proved this assumption to be false.
Voltammetry: Factors Affecting Measurements
Gas Chromatography: Overview of Detectors
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
Gas Chromatography: Types of Detectors-I
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
Gas Chromatography: Types of Detectors-II
High-Performance Liquid Chromatography: Types of Detectors

