Synthesis of novel ZnSnO₃ hollow polyhedrons with open nanoholes: Enhanced acetone-sensing performance

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• 作者：Qiong Chen^a ; ^b ; Shu Yi Ma^b ; ^{chenqiong302@163.com" class="auth_mail" title="E-mail the corresponding author} ; Hai Yan Jiao^a ; Guo Heng Zhang^a ; Hui Chen^b ; Xiao Li Xu^b ; Heng Ming Yang^b ; Zhen Qiang^b
• 关键词：ZnSnO3 ; Hollow polyhedrons ; Hydrothermal ; Gas sensor
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：1617-1621
• 全文大小：745 K

文摘

A kind of novel ZnSnO₃ hollow polyhedrons with open nanoholes was synthesized via facile hydrothermal method and characterized by X-ray diffraction (XRD), energy dispersive X-Ray spectroscopy (EDX), scanning electronmicroscopy (SEM) and transmission electron microscopy (TEM) analyses. A possible formation mechanism of such microstructure was speculated. Moreover, the sensor based on these ZnSnO₃ hollow polyhedrons exhibited good gas sensing performance at 240 °C to 50 ppm acetone, and the response and recovery times were about 17 and 10 s, respectively. The significant decrease in optimal operating temperature and the ability of detecting low-concentration acetone gas were attributed to the unique structure of the products which possessed hollow interior and good-permeation surface.