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Updated: May 5, 2026

Exploring the Radical Nature of a Carbon Surface by Electron Paramagnetic Resonance and a Calibrated Gas Flow

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Published on: April 24, 2014

A Highly Selective Acetone Sensor Based on Coal-Based Carbon/MoO₂ Nanohybrid Material.

Min Zhang¹, Yi Han¹, Ting Liu²

¹School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China.

Sensors (Basel, Switzerland)

|July 13, 2024

Summary

This summary is machine-generated.

This study introduces novel coal-based carbon and molybdenum dioxide (C/MoO2) nanohybrid materials for highly selective acetone detection at room temperature. These materials offer a promising solution for efficient volatile organic compound sensing.

Keywords:

acetone sensors coal mixed molten salt porous carbon

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Last Updated: May 5, 2026

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Published on: March 4, 2021

Area of Science:

Materials Science
Nanotechnology
Chemical Sensing

Background:

High operating temperatures are a major limitation for gas sensor development.
Room temperature gas sensors are crucial for practical applications.
Coal-based materials offer potential for low-cost sensor fabrication.

Purpose of the Study:

To synthesize and investigate coal-based porous carbon (C-700) and C/MoO2 nanohybrid materials.
To evaluate the gas-sensing performance of these materials at room temperature.
To explore the potential of coal-derived materials for volatile organic compound (VOC) detection.

Main Methods:

One-step vapor deposition and sintering method for material synthesis.
Gas-sensing performance evaluation for various VOCs (phenol, ethyl acetate, ethanol, acetone, triethylamine, toluene) and high humidity (95% RH).
Analysis of sensing mechanisms, focusing on synergistic effects.

Main Results:

The C/MoO2-450 sample demonstrated excellent selectivity for acetone at room temperature.
Achieved a high response value of 4153.09% for acetone.
Exhibited rapid response (10.8 s) and recovery (2.9 s) times, along with good repeatability and stability.

Conclusions:

The synthesized C/MoO2 nanohybrid materials show superior gas-sensing performance for acetone at room temperature.
The synergistic effect between porous carbon and MoO2 nanoparticles enhances sensing capabilities.
This research presents a viable method for utilizing coal-based materials in room-temperature VOC detection.