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ZnO/γ-Fe2O3 Charge Transfer Interface toward Highly Selective H2S Sensing at a Low Operating Temperature of 30 °C
ACS Sensors ( IF 8.2 ) Pub Date : 2017-12-11 00:00:00 , DOI: 10.1021/acssensors.7b00636 Sugato Ghosh 1 , Deepanjana Adak 1 , Raghunath Bhattacharyya 1 , Nillohit Mukherjee 1
ACS Sensors ( IF 8.2 ) Pub Date : 2017-12-11 00:00:00 , DOI: 10.1021/acssensors.7b00636 Sugato Ghosh 1 , Deepanjana Adak 1 , Raghunath Bhattacharyya 1 , Nillohit Mukherjee 1
Affiliation
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ZnO/γ-Fe2O3 heterostructure has been deposited in the form of thin films using a single step facile electrochemical technique. Considering the unique properties of both ZnO and γ-Fe2O3 toward the sensing of reducing gases, the concept of forming a heterostructure between them has been conceived. The structural characterization of the deposited material has been performed using X-ray diffraction, field emission scanning electron microscopy, and transmission electron microscopy, which revealed a flowerlike morphology with the coexistence of both ZnO and γ-Fe2O3 leading to the formation of a heterostructure. The material showed excellent sensing properties toward the selective detection of H2S at room temperature (30 °C) among the three test gases, namely, CH4, H2S, and CO. The effect of relative humidity was also studied to have an idea about the performance of the device under a real situation. The results are promising and better than those of many commercially available sensors. The room temperature selective detection will help in facile fabrication of portable gadgets.
中文翻译：
的ZnO /γ-的Fe 2 ö 3电荷转移接口朝向高选择性ħ 2小号传感在30低工作温度℃下
的ZnO /γ-的Fe 2 ö 3异质结构已沉积在使用容易电化学技术的单一步骤的薄膜的形式。同时考虑ZnO和γ-Fe的独特性质2 ö 3朝向还原气体的感测，在它们之间形成异质结构的概念已被设想。已经使用X射线衍射，场发射扫描电子显微镜和透射电子显微镜，其揭示与两个ZnO和共存一个花状的形态进行的沉积材料的结构表征了γ-Fe 2 ö 3导致形成异质结构。该材料对在室温（30°C）下选择性检测H 4 S在CH 4，H 2 S和CO这三种测试气体中表现出优异的感测性能。还研究了相对湿度的影响，关于设备在实际情况下的性能的想法。结果是有希望的，并且比许多市售传感器的结果更好。室温选择性检测将有助于方便地制造便携式产品。
更新日期：2017-12-11
中文翻译：
的ZnO /γ-的Fe 2 ö 3电荷转移接口朝向高选择性ħ 2小号传感在30低工作温度℃下
的ZnO /γ-的Fe 2 ö 3异质结构已沉积在使用容易电化学技术的单一步骤的薄膜的形式。同时考虑ZnO和γ-Fe的独特性质2 ö 3朝向还原气体的感测，在它们之间形成异质结构的概念已被设想。已经使用X射线衍射，场发射扫描电子显微镜和透射电子显微镜，其揭示与两个ZnO和共存一个花状的形态进行的沉积材料的结构表征了γ-Fe 2 ö 3导致形成异质结构。该材料对在室温（30°C）下选择性检测H 4 S在CH 4，H 2 S和CO这三种测试气体中表现出优异的感测性能。还研究了相对湿度的影响，关于设备在实际情况下的性能的想法。结果是有希望的，并且比许多市售传感器的结果更好。室温选择性检测将有助于方便地制造便携式产品。
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