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Facile synthesis of nanoparticle packed In2O3 nanospheres for highly sensitive NO2 sensing

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Abstract

Nanoparticle packed In2O3 nanospheres are successfully synthesized via a facile one-step solvothermal method followed by annealing. The structure and morphology of the as-synthesized samples are characterized via X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). Moreover, the NO2 gas sensing properties of the nanoparticle packed In2O3 nanospheres are further investigated. The sensor shows excellent selectivity, high response (217.5 to 500 ppb), superior stability and repeatability at the optimum operating temperature of 120 °C with a limit of detection lower than 10 ppb. Thus, this type of material is promising for low concentration NO2 gas-sensing.

Graphical abstract: Facile synthesis of nanoparticle packed In2O3 nanospheres for highly sensitive NO2 sensing

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Publication details

The article was received on 23 Feb 2017, accepted on 03 Jul 2017 and first published on 04 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ00647K
Citation: New J. Chem., 2017, Advance Article
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    Facile synthesis of nanoparticle packed In2O3 nanospheres for highly sensitive NO2 sensing

    B. Xiao, Q. Zhao, D. Wang, G. Ma and M. Zhang, New J. Chem., 2017, Advance Article , DOI: 10.1039/C7NJ00647K

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