Preparation of hollow Co 3O 4 microspheres and their ethanol sensing properties

Qingze Jiao; Min Fu; Chao You; Yun Zhao; Hansheng Li

doi:10.1021/ic3013602

Preparation of hollow Co ₃O ₄ microspheres and their ethanol sensing properties

Qingze Jiao, Min Fu, Chao You, Yun Zhao^*, Hansheng Li

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Research output: Contribution to journal › Article › peer-review

90 Citations (Scopus)

Abstract

The hollow Co ₃O ₄ microspheres were prepared by a gas-liquid diffusion reaction in the presence of ionic liquid [Bmim][BF ₄] in combination with calcination at 300 °C. Their structures and morphologies were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectrometry, and X-ray photoelectron spectroscopy. The growth mechanism of hollow Co ₃O ₄ microspheres was proposed. The ethanol sensing properties were measured using a WS-30A gas sensor measurement system. The influence of working temperatures, ethanol concentrations, and specific surface areas of Co ₃O ₄ microspheres on the ethanol sensing properties was investigated. The hollow Co ₃O ₄ microspheres showed excellent sensitivity to ethanol vapor at a lower operating temperature.

Original language	English
Pages (from-to)	11513-11520
Number of pages	8
Journal	Inorganic Chemistry
Volume	51
Issue number	21
DOIs	https://doi.org/10.1021/ic3013602
Publication status	Published - 5 Nov 2012

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abstract = "The hollow Co 3O 4 microspheres were prepared by a gas-liquid diffusion reaction in the presence of ionic liquid [Bmim][BF 4] in combination with calcination at 300 °C. Their structures and morphologies were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectrometry, and X-ray photoelectron spectroscopy. The growth mechanism of hollow Co 3O 4 microspheres was proposed. The ethanol sensing properties were measured using a WS-30A gas sensor measurement system. The influence of working temperatures, ethanol concentrations, and specific surface areas of Co 3O 4 microspheres on the ethanol sensing properties was investigated. The hollow Co 3O 4 microspheres showed excellent sensitivity to ethanol vapor at a lower operating temperature.",

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AU - Fu, Min

AU - You, Chao

AU - Zhao, Yun

AU - Li, Hansheng

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Y1 - 2012/11/5

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AB - The hollow Co 3O 4 microspheres were prepared by a gas-liquid diffusion reaction in the presence of ionic liquid [Bmim][BF 4] in combination with calcination at 300 °C. Their structures and morphologies were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Raman spectrometry, and X-ray photoelectron spectroscopy. The growth mechanism of hollow Co 3O 4 microspheres was proposed. The ethanol sensing properties were measured using a WS-30A gas sensor measurement system. The influence of working temperatures, ethanol concentrations, and specific surface areas of Co 3O 4 microspheres on the ethanol sensing properties was investigated. The hollow Co 3O 4 microspheres showed excellent sensitivity to ethanol vapor at a lower operating temperature.

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Preparation of hollow Co ₃O ₄ microspheres and their ethanol sensing properties

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