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Preparation and morphology controlling of Co3O4 nanostructures and their gas-sensing properties

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Abstract

Co3O4 nanorods and nanosheets were prepared via a facile fluorine-mediated hydrothermal method, followed by thermal conversion. Both the Co3O4 nanorods and nanosheets exhibited a spinel structure, assembling by 30 nm nanograin along one and two dimensions. The primary exposed facet of the Co3O4 nanorods was identified as (110), while the main exposed plane of the Co3O4 nanosheets was (112). Gas sensing results showed the Co3O4 nanorods sensor exhibited higher sensitivity. The Co3O4 nanorods sensor demonstrated excellent sensitivities to toluene and xylene at 200°C, making it a promising candidate for the detection of these specific volatile organic compounds.

Graphical abstract

The response of the Co3O4 nanorods sensor to the test gases at 200°C.

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Data availability

The data thatsupport the findings of thisstudy are available from the corresponding author upon reasonable request.

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Funding

This research wassupported by the National Naturalscience Foundation of China (62075035), the Guangdong Basic and Applied Basic Research Foundation (2021B1515420001), the Engineering Technology Research Center of Colleges and Universities in Guangdong Province (2021GCZX005) and the Innovationscience Foundation of Wuhan Institute of Technology (No. CX2022260).

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Authors and Affiliations

  1. Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Wuhan Institute of Technology, Wuhan, 430073, China

    Lehang Cheng, Yuankun Wang & Zhidong Lin

  2. Zhongshan Branch of State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan, 528402, People’s Republic of China

    Liming Liu

  3. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, People’s Republic of China

    Xiaowen Zhang

Authors
  1. Lehang Cheng
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  2. Yuankun Wang
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  3. Zhidong Lin
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  4. Liming Liu
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  5. Xiaowen Zhang
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Contributions

LC: Conceptualization, Experimental, Data curation, writing—Original Draft. YW: Experimental, Data curation. ZL: Project administration, formal analysis, review & editing,supervision. LL: Funding acquisition; Resources, review & editing. XZ: Resources, review, editing.

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Correspondence to Zhidong Lin.

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Cheng, L., Wang, Y., Lin, Z. et al. Preparation and morphology controlling of Co3O4 nanostructures and their gas-sensing properties. MRS Communications (2024). https://doi.org/10.1557/s43579-024-00545-4

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