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Surfactant-free synthesis of 3D hierarchical flower-like NiO nanostructures with enhanced ethanol-sensing performance

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Abstract

Different morphologies hierarchical flower-like Nickel oxide nanostructures were fabricated by changing the volume of ammonia (Va = 1, 4, and 8 ml) under a template-free and low-cost hydrothermal method and subsequent calcinations. The nanoflowers were composed of two-dimensional (2D) nanosheets. The sensor based on the samples of Va = 8 exhibited the most excellent gas-sensing performance to ethanol. Moreover, a possible growth mechanisms were also proposed. The facile preparation method and the improved properties derived from the three-dimensional structures are significant in the synthesis and future applications of functional nanomaterials.

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Authors and Affiliations

  1. Research Institute for New Material Technology, Chongqing University of Arts and Science, Chongqing, 402160, China

    Shixiu Cao, Tao Han & Lingling Peng

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  1. Shixiu Cao
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  2. Tao Han
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  3. Lingling Peng
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Correspondence to Shixiu Cao.

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Cao, S., Han, T. & Peng, L. Surfactant-free synthesis of 3D hierarchical flower-like NiO nanostructures with enhanced ethanol-sensing performance. J Mater Sci: Mater Electron 31, 17291–17296 (2020). https://doi.org/10.1007/s10854-020-04283-w

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  • DOI: https://doi.org/10.1007/s10854-020-04283-w

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