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Highly sensitive and selective ethanol sensors based on porous Co3O4 nanobelts synthesized through a facile wet-chemistry method

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Abstract

This work presents the novel porous Co3O4 nanobelts synthesized through a facile wet-chemical method. The as-prepared samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive spectrum (EDS), and Brunauere Emmette Teller (BET) measurements. The results show that the porous Co3O4 nanobelts are almost 1 μm in length, 50 nm in width, and 10 nm in thickness. And, the porous Co3O4 nanobelts are ultra-thin and full of numerous mesopores. The porous Co3O4 nanobelts exhibit excellent sensitivity and selectivity properties to ethanol, and the detecting limit is lower to 1 ppm. The sensing mechanism also has been discussed. It can be expected that the novel morphology of the Co3O4 nanomaterials may bring amazing development for gas sensing detection.

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Funding

This study is financially supported by the National Natural Science Foundation of China (No. 21201004, 61673369), Initial Scientific Research Fund of Anhui Jianzhu University (No. 2017QD14), Major Natural Science Projects in Universities of Anhui Education Department (KJ2018ZD048), and Nature Science Foundation of Anhui Province (No. 616733691808085QF195).

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Author notes

  1. Zhen Jin and Li-Peng Wang contributed equally to this work.

Authors and Affiliations

  1. School of Materials and Chemical Engineering, Anhui JianZhu University, Hefei, 230601, Anhui, People’s Republic of China

    Zhen Jin, Xiu-Fang Wang & Yi Ding

  2. Key Laboratory of Functional Molecule Design and Interface Process, Anhui JianZhu University, Hefei, 230022, Anhui, China

    Zhen Jin, Xiu-Fang Wang & Yi Ding

  3. Nanomaterials and Environment Detection Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, People’s Republic of China

    Li-Peng Wang

  4. School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei, 230601, Anhui, People’s Republic of China

    Yong Zhang & Min-He Liao

  5. Department of Environmental Design, Anhui Jianzhu University, Hefei, 230601, Anhui, People’s Republic of China

    Jun Fan

Authors
  1. Zhen Jin
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  2. Li-Peng Wang
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  3. Yong Zhang
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  4. Jun Fan
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  5. Min-He Liao
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  6. Xiu-Fang Wang
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  7. Yi Ding
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Correspondence to Zhen Jin, Yong Zhang or Yi Ding.

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Jin, Z., Wang, LP., Zhang, Y. et al. Highly sensitive and selective ethanol sensors based on porous Co3O4 nanobelts synthesized through a facile wet-chemistry method. J Nanopart Res 21, 115 (2019). https://doi.org/10.1007/s11051-019-4549-7

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