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Porous Au/ZnO nanoparticles synthesised through a metal organic framework (MOF) route for enhanced acetone gas-sensing

机译:通过金属有机骨架(MOF)路线合成的多孔Au / ZnO纳米颗粒,用于增强丙酮气敏性

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The design of porous metal oxides with noble metal doping has attracted tremendous attention due to their vital importance for gas sensing applications. Herein, we report the synthesis of porous Au/ZnO nanoparticles (NPs) through a facile metal organic framework (MOF) route. The structures, sensing properties, as well as sensing mechanisms of products are carefully investigated. The porous Au/ZnO NPs show a high gas-sensing response (17.1 ppm?1) and selectivity towards low concentration acetone at an optimum temperature of 275 °C. The enhanced sensing performances are ascribed to the chemical and electronic sensitization of Au NPs, the porous structure and the high specific surface area of Au/ZnO NPs. Our studies might provide a simple MOF-derived method to synthesize porous structures with noble metal doping and would be beneficial to the development of high performance gas sensing materials.
机译:具有贵金属掺杂的多孔金属氧化物的设计因其对气体传感应用的至关重要性而引起了极大的关注。在这里,我们报告通过一个便捷的金属有机框架(MOF)路线的多孔Au / ZnO纳米粒子(NPs)的合成。仔细研究了产品的结构,感测特性以及感测机理。多孔Au / ZnO NPs在275°C的最佳温度下显示出高的气敏响应(17.1 ppm ?1 )和对低浓度丙酮的选择性。增强的感测性能归因于Au NPs的化学和电子敏化,Au / ZnO NPs的多孔结构和高比表面积。我们的研究可能会提供一种简单的MOF衍生方法来合成具有贵金属掺杂的多孔结构,并且将有助于开发高性能的气体传感材料。

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