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Double-layer capsule of mesoporous ZnO@SnO2 for sensitive detection of triethylamine
Analyst ( IF 3.6 ) Pub Date : 2021-08-19 , DOI: 10.1039/d1an01125a Ming Yin 1 , Li Zhang 1 , Tianyi Qiu 2 , Yan Chen 1 , Shuyan Qi 1 , Xiuxia Wei 1 , Xinxin Tian 1 , Kangjie Ge 1 , Jingxuan Qiu 1 , Dongpo Xu 1
Analyst ( IF 3.6 ) Pub Date : 2021-08-19 , DOI: 10.1039/d1an01125a Ming Yin 1 , Li Zhang 1 , Tianyi Qiu 2 , Yan Chen 1 , Shuyan Qi 1 , Xiuxia Wei 1 , Xinxin Tian 1 , Kangjie Ge 1 , Jingxuan Qiu 1 , Dongpo Xu 1
Affiliation
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To overcome obstacles such as low response and poor selectivity of pure ZnO and SnO2 gas sensors, the ZnO@SnO2 sensor was synthesized by hydrothermal synthesis. The samples were characterized by XRD, XPS, SEM, HRTEM, N2 adsorption–desorption and other techniques. The results show that ZnO@SnO2 forms an n–n-type heterostructure and presents a double-layer capsule with a size of 0.5–4 μm. The results show that compared with pure ZnO and SnO2, the ZnO@SnO2 sensor exhibits a higher response (138.9) to 50 ppm triethylamine (TEA) at 152°C, which is 19.56 times that of the pure ZnO sensor and 21.7 times that of the SnO2 sensor. It has a short response/recovery time (11/11 s), excellent selectivity and cycling stability. Compared with other volatile organic compounds or gases, it has higher selectivity for TEA detection.
中文翻译：
用于灵敏检测三乙胺的介孔 ZnO@SnO2 双层胶囊
为了克服纯ZnO和SnO 2气体传感器响应低、选择性差等障碍，采用水热合成法合成了ZnO@SnO 2传感器。通过XRD、XPS、SEM、HRTEM、N 2吸附-解吸等技术对样品进行表征。结果表明，ZnO@SnO 2形成了n-n型异质结构，并呈现出尺寸为0.5-4 μm的双层胶囊。结果表明，与纯 ZnO 和 SnO 2相比，ZnO@SnO 2传感器在 152°C 时对 50 ppm 三乙胺 (TEA) 表现出更高的响应（138.9），是纯 ZnO 传感器的 19.56 倍和 21.7 倍。 SnO 2 的传感器。它具有较短的响应/恢复时间（11/11 s）、出色的选择性和循环稳定性。与其他挥发性有机化合物或气体相比，对TEA的检测具有更高的选择性。
更新日期：2021-09-13
中文翻译：
用于灵敏检测三乙胺的介孔 ZnO@SnO2 双层胶囊
为了克服纯ZnO和SnO 2气体传感器响应低、选择性差等障碍，采用水热合成法合成了ZnO@SnO 2传感器。通过XRD、XPS、SEM、HRTEM、N 2吸附-解吸等技术对样品进行表征。结果表明，ZnO@SnO 2形成了n-n型异质结构，并呈现出尺寸为0.5-4 μm的双层胶囊。结果表明，与纯 ZnO 和 SnO 2相比，ZnO@SnO 2传感器在 152°C 时对 50 ppm 三乙胺 (TEA) 表现出更高的响应（138.9），是纯 ZnO 传感器的 19.56 倍和 21.7 倍。 SnO 2 的传感器。它具有较短的响应/恢复时间（11/11 s）、出色的选择性和循环稳定性。与其他挥发性有机化合物或气体相比，对TEA的检测具有更高的选择性。
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