Glucose-assisted synthesis of hierarchical NiO-ZnO heterostructure with enhanced glycol gas sensing performance
Glucose-assisted synthesis of hierarchical NiO-ZnO heterostructure with enhanced glycol gas sensing performance
复制标题
葡萄糖辅助合成具有增强乙二醇气体传感性能的分级 NiO-ZnO 异质结构
DOI：
10.1016/j.snb.2020.129167
复制
发表时间：
2021-01-17
影响因子：
8.4
通讯作者：
Xu, Lin
中科院分区：
文献类型：
--
作者：
Su, Chen;Zhang, Lu;Xu, Lin
异质结具有响应快、工作温度低等优点，是提高气敏性能的有效途径。本文采用一步水热法，在葡萄糖的辅助下，通过进一步的煅烧处理，合成了一种新颖的花状分级NiO-ZnO（G-NiO-ZnO）异质结构。基于G-NiO-ZnO异质结的气敏元件在相对较低的工作温度（约140 ℃）下对100 ppm乙二醇的响应为142.0，具有良好的重复性和长期稳定性，这主要归因于G-NiO-ZnO异质结具有稳定的分级多孔结构和较大的比表面积以及在合成过程中产生的大量氧空位缺陷。总之，本工作为直接一步合成G-NiO-ZnO异质结奠定了坚实的基础，并展示了巨大的实际应用潜力，用于高效的乙二醇气体检测。
Heterojunction has been proposed as an effective approach to improve the gas sensing performance with good response and low operating temperature. In this work, a one-step hydrothermal method was employed to synthesize a novel flower-like hierarchical NiO-ZnO (G-NiO-ZnO) heterostructure with the assistance of glucose and further calcination treatment. The gas sensors based on G-NiO-ZnO heterojunction exhibit a response of 142.0 toward 100 ppm glycol at relatively low operating temperature about 140 degrees C with excellent repeatability and long-term stability, which is mainly attributed to the stable hierarchical porous structure with a large specific surface area and the massive oxygen vacancy defects generated during the synthesis process. In general, this work paves a solid foundation for directly synthesizing G-NiO-ZnO heterojunction in a one-step approach and demonstrates a great practical application potential for efficient glycol gas detecting.