Zn₂SnO₄-doped SnO₂ hollow spheres for phenylamine gas sensor application

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• 作者：Jiedi YangAuthor Vitae ; Shurong Wang ; ^{shrwang@nankai.edu.cn" class="auth_mail" title="E-mail the corresponding author}Author Vitae ; Luping ZhangAuthor Vitae ; Rui DongAuthor Vitae ; Zhenyu ZhuAuthor Vitae ; Xueling GaoAuthor Vitae
• 关键词：Zn2SnO4-doped SnO2 ; Hollow spheres ; Phenylamine ; Gas sensor
• 刊名：Sensors & Actuators: B. Chemical
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：239
• 期：Complete
• 页码：857-864
• 全文大小：2482 K

文摘

In this paper, Zn₂SnO₄-doped SnO₂ hollow spheres (HSs) were successfully synthesized by a one-step facile hydrothermal strategy without using any surfactants. In order to investigate the morphology, crystalline property and chemical composition of the prepared Zn₂SnO₄-doped SnO₂ HSs, a sequence of techniques inclusive of scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were performed. The sensor based on the as-fabricated Zn₂SnO₄-doped SnO₂ HSs exhibited an excellent gas-sensing performance to phenylamine, including good selectivity and good reproducibility as well as reinforced response compared with the pristine SnO₂ sample. Such enhanced gas-sensing performances are probably ascribed to the unique porous HS morphology, the strong interfacial interaction between Zn₂SnO₄ and SnO₂ and the existence of heterojunctions. The as-fabricated Zn₂SnO₄-doped SnO₂ HSs may also lead to potential applications in other fields such as lithium-ion batteries, catalysis and dye-sensitized solar cells.