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Low-temperature H2S gas sensor based on spherical Ag3PO4-doped SnO2
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020-09-11 , DOI: 10.1039/d0nj03189e
Mojie Sun 1, 2, 3, 4 , Zhenye Zhang 1, 2, 3, 4 , Shijie Wang 1, 2, 3, 4 , Shiyuan Zhang 1, 2, 3, 4 , Ruiting Wang 1, 2, 3, 4 , Xiaochen Song 2, 3, 4, 5
Affiliation  

An efficient method for detecting H2S gas at low temperatures using micrometer-sized spherical Ag3PO4-doped SnO2 materials synthesized by hydrothermal and chemical precipitation methods is reported. The crystalline phase, defects, elemental composition, and morphology of the samples were characterized in detail using scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Fourier transform infrared spectroscopy. The characterization results verified the spherical structures of Ag3PO4-doped SnO2 materials. The performance analysis revealed that the proposed gas sensor has the advantages of low operating temperature (100 °C), high response value (118), and good selectivity. The excellent H2S gas sensing performance is attributed to the increased oxygen vacancy defects and facile electron transfer process in the conduction band. Overall, this study validates the potential of gas-sensitive sensors based on Ag3PO4-doped SnO2 materials for practical applications.

中文翻译:

基于球形Ag3PO4掺杂SnO2的低温H2S气体传感器

报道了一种通过水热和化学沉淀法合成的微米级球形Ag 3 PO 4掺杂SnO 2材料在低温下检测H 2 S气体的有效方法。使用扫描电子显微镜,X射线衍射,X射线光电子能谱和傅里叶变换红外光谱对样品的晶相,缺陷,元素组成和形态进行了详细表征。表征结果验证了掺杂Ag 3 PO 4的SnO 2的球形结构材料。性能分析表明,所提出的气体传感器具有工作温度低(100℃),响应值高(118),选择性好等优点。出色的H 2 S气敏性能归因于氧空位缺陷的增加和导带中电子传输过程的便捷。总体而言,这项研究验证了基于Ag 3 PO 4掺杂SnO 2材料的气敏传感器在实际应用中的潜力。
更新日期:2020-09-28
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