Open AccessSynthesis of Sn‐doped ZnO hierarchical particles and their gas‐sensing properties
Author(s) -
Qin Xi,
Wang Xu,
Gu Dawei,
Shen Linjiang
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2018.5330
Subject(s) - dopant , materials science , doping , calcination , microstructure , scanning electron microscope , fabrication , dispersity , chemical engineering , nanotechnology , diffraction , optoelectronics , composite material , optics , catalysis , organic chemistry , polymer chemistry , chemistry , engineering , medicine , alternative medicine , physics , pathology
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.