Low-temperature H2S gas sensor based on spherical Ag3PO4-doped SnO2,New Journal of Chemistry

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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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