Synthesis of Sn-doped ZnO hierarchical particles and their gas-sensing properties

Xi Qin; Xu Wang; Dawei Gu; Linjiang Shen

Synthesis of Sn-doped ZnO hierarchical particles and their gas-sensing properties

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Author(s): Xi Qin¹ ; Xu Wang¹ ; Dawei Gu¹ ; Linjiang Shen¹
- Affiliations: 1: School of Physical and Mathematical Sciences , Nanjing Tech University , Nanjing, 211800 People's Republic of China
Source: Volume 13, Issue 12, December 2018, p. 1638 – 1641
DOI: 10.1049/mnl.2018.5330 , Online ISSN 1750-0443

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Received 18/06/2018, Accepted 24/07/2018, Revised 11/07/2018, Published 01/12/2018

In this work, un-doped and Sn-doped hierarchical ZnO particles with high dispersity were successfully fabricated by a facile liquid reaction. The prepared samples are characterised by X-ray diffraction and scanning electron microscopy. The as-synthesised hierarchical ZnO particles with a diameter of ∼1.5 μm were obtained by considerably intersecting thin nanosheets of ∼20 nm thickness. The morphology of ZnO structures can be varied by adjusting reaction parameters, e.g. reaction temperature, calcination temperature, and dopant concentration. On the basis of experimental results, the gas-sensing measurement displays that the sensor based on Sn-doped ZnO microstructures have a low detection of 10 ppm ethanol at an operational temperature of 250°C, demonstrating its outstanding gas-sensing performance. Therefore, the flower-like Sn-doped ZnO have prospective applications in a multifunction ethanol sensor. Moreover, the fabrication method reported in the work is facile, flexible and operable, it is possible to extend to synthesise other types of metal oxide-based applications in various fields.

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Synthesis of Sn-doped ZnO hierarchical particles and their gas-sensing properties

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