Hydrothermal Synthesis and Ethanol-Sensing Properties of MoO3 Nanobelts

Min Na Liu; Qian Qian Chen; Xin Lu; Lian Fang Ge; Li Yin; Rui Zhang; De Liang Chen

doi:10.4028/www.scientific.net/KEM.575-576.61

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 575-576Hydrothermal Synthesis and Ethanol-Sensing...

Hydrothermal Synthesis and Ethanol-Sensing Properties of MoO₃ Nanobelts

Abstract:

Uniform MoO₃ nanobelts were synthesized through a fast and simple hydrothermal route without any other agents. The hydrothermal reaction was performed at 180 °C for 12 h using a HNO₃aqueous solution as the solvent. The phases and microstructures were characterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results indicated that the sample obtained was an orthorhombic MoO₃ phase, and had a belt-like morphology with lengths of 510 μm and apparent widths of about 220 nm. The MoO₃ nanobelts obtained were used as the sensing materials to fabricate chemical sensors for detection of some volatile organic compounds (VOCs) (including ethanol, methanol, isopropanol, acetone, methanal, and benzene). The gas-sensing results indicated that the sensor of the α-MoO₃ nanobelts has enhanced ethanol-sensing performance, e.g., with the highest sensitivity of S_r =144 for 500 ppm ethanol vapor operating at 300 °C.

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Periodical:

Key Engineering Materials (Volumes 575-576)

Pages:

61-64

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.575-576.61

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Online since:

September 2013

Authors:

Min Na Liu, Qian Qian Chen, Xin Lu, Lian Fang Ge, Li Yin, Rui Zhang, De Liang Chen

Keywords:

Chemical Sensors, Gas-Sensing Materials, MoO₃ Nanobelts, Volatile Organic Compounds

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