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首页> 外文期刊>Nanotechnology >Enhancing performances of a resistivity-type hydrogen sensor based on Pd/SnO2/RGO nanocomposites
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Enhancing performances of a resistivity-type hydrogen sensor based on Pd/SnO2/RGO nanocomposites

机译：基于PD / SNO2 / RGO纳米复合材料增强电阻率型氢传感器的性能

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摘要

Palladium/tin oxide/reduced graphene oxide (Pd/SnO2/RGO) nanocomposites with Pd and SnO2 crystalline nanoparticles of high density and uniformity coated on RGO have been synthesized by a two-step reduction process. A novel hydrogen (H-2) sensor based on Pd/SnO2/RGO nanocomposites was fabricated by placing Pd/SnO2/RGO nanocomposites onto a pair of gold electrodes. The Pd/SnO2/RGO nanocomposite-based sensor exhibited higher responses than Pd/RGO to H-2 because the introduction of SnO2 nanoparticles enhances H-2 adsorption and forms a P-N junction with RGO. The sensor shows a high response of 55% to 10 000 ppm H-2, and a low detection limit, fast response, good selectivity and repeatability due to a combination effect of the Pd and SnO2 nanoparticles. The studies provide a novel strategy for great potential applications of graphene-based gas sensors.
机译：通过两步还原过程合成了具有Pd和SnO2氧化物纳米烯氧化物（Pd / SnO2 / Rgo）纳米复合材料和涂覆在Rgo上的高密度和均匀性的均匀性。 通过将Pd / snO2 / rgo纳米复合材料放到一对金电极上，制备基于Pd / snO2 / rgo纳米复合材料的新型氢（H-2）传感器。 基于Pd / snO2 / rgo纳米复合材料的传感器比Pd / Rgo响应高，因为SnO2纳米粒子的引入增强了H-2吸附并形成了RGO的P-N结。 传感器显示出55％至10 000ppm H-2的高响应，以及由于Pd和SnO2纳米颗粒的组合效果导致的低检测极限，快速响应，选择性和可重复性。 该研究提供了一种新的石墨烯的气体传感器潜在应用的新策略。

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