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Characterization and gas sensing performances of noble metals decorated CuO nanorods

机译：贵金属的表征和气体传感性能装饰Cuo Nanorods

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摘要

In this work, hydrogen and volatile organic compounds (VOCs) gas sensing properties of Pt/Pd decorated p-type CuO nanorods were investigated. CuO nanorods were hydrothermally grown on IDEs (interdigital electrodes) fabricated via photolithography and decorations of Pt/Pd on CuO nanorods were performed by RF magnetron sputtering with three decoration times (15 s, 30 s and 42 s). Morphological and structural characterizations were carried out by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Sensor characteristics of pristine and decorated nanorods were investigated for the detection of hydrogen and some VOCs. Sensing experiments show that optimum Pt and Pd decoration substantially enhanced ethanol and hydrogen sensitivity, respectively. Sensor response of optimum Pt decorated CuO nanorods to ethanol was about 60 fold higher than that of the pristine. Gas sensing mechanism highlighting the enhanced sensitivity to ethanol and hydrogen with Pt and Pd decoration is discussed in correlation with detailed XPS studies.
机译：在该作品中，研究了Pt / Pd装饰P型CuO纳米棒的氢和挥发性有机化合物（VOCS）气体传感性能。 CuO纳米棒在通过光刻制造的IDE（叉指电极）上水热生长，CUO纳米棒上的Pt / Pd的装饰通过RF磁控管溅射进行三个装饰时间（15s，30 s和42 s）进行。通过X射线衍射（XRD），扫描电子显微镜（SEM），能量分散X射线光谱（EDS）和X射线光电子谱（XPS）进行形态和结构表征。研究了原始和装饰纳米棒的传感器特性，用于检测氢气和一些VOC。感测实验表明，最佳PT和PD装饰分别增强了乙醇和氢敏感性。最佳PT的传感器响应为乙醇的CuO纳米棒比原始的高约60倍。与详细XPS研究相关，探讨了突出增强乙醇和氢气的增强浓度和PT和PD装饰的敏感机制。

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