Zhou Qu, Chen Weigen, Peng Shudi, Zeng Wen
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China.
Chongqing Electric Power Research Institute, Chongqing 401123, China.
ScientificWorldJournal. 2014 Jan 30;2014:489170. doi: 10.1155/2014/489170. eCollection 2014.
Various morphologies of low dimensional ZnO nanostructures, including spheres, rods, sheets, and wires, were successfully synthesized using a simple and facile hydrothermal method assisted with different surfactants. Zinc acetate dihydrate was chosen as the precursors of ZnO nanostructures. We found that polyethylene glycol (PEG), polyvinylpyrrolidone (PVP), glycine, and ethylene glycol (EG) play critical roles in the morphologies and microstructures of the synthesized nanostructures, and a series of possible growth processes were discussed in detail. Gas sensors were fabricated using screen-printing technology, and their sensing properties towards acetylene gas (C2H2), one of the most important arc discharge characteristic gases dissolved in oil-filled power equipments, were systematically measured. The ZnO nanowires based sensor exhibits excellent C2H2 sensing behaviors than those of ZnO nanosheets, nanorods, and nanospheres, indicating a feasible way to develop high-performance C2H2 gas sensor for practical application.
采用一种简单便捷的水热法，并辅以不同的表面活性剂，成功合成了各种低维氧化锌纳米结构，包括球形、棒状、片状和线状。选择二水合醋酸锌作为氧化锌纳米结构的前驱体。我们发现聚乙二醇（PEG）、聚乙烯吡咯烷酮（PVP）、甘氨酸和乙二醇（EG）在合成纳米结构的形貌和微观结构中起着关键作用，并详细讨论了一系列可能的生长过程。采用丝网印刷技术制备了气体传感器，并系统地测量了它们对乙炔气体（C2H2）的传感性能，乙炔是充油电力设备中溶解的最重要的电弧放电特征气体之一。基于氧化锌纳米线的传感器对C2H2的传感性能优于氧化锌纳米片、纳米棒和纳米球，这表明开发用于实际应用的高性能C2H2气体传感器是一种可行的方法。
