Hydrogen Sensors from Composites of Ultra-small Bimetallic Nanoparticles and Porous Ion-Exchange Polymers
Hydrogen Sensors from Composites of Ultra-small Bimetallic Nanoparticles and Porous Ion-Exchange Polymers
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DOI：
10.1016/j.chempr.2020.07.015
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发表时间：
2020-10-08
期刊：
影响因子：
23.5
通讯作者：
Kim, Il-Doo
中科院分区：
文献类型：
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作者：
Koo, Won-Tae;Kim, Yoonseob;Kim, Il-Doo
双金属纳米粒子（BM-NPs）由于具有超高的表面反应活性，在催化、传感和电子学等领域引起了广泛的关注。为了在各种应用中可靠地利用BM-NP，需要用于产生直径小于几纳米的非聚集的功能性BM-NP的稳健的合成方法。在这里，我们提出了功能组件的超小BMNPs内产生的高稳定性多孔离子交换聚合物。具体地，PdPt NP可以容易地以低至lnm的精确尺寸控制来生产。这些具有多孔聚合物的PdPt NPs在室温下在空气中显示出上级氢（H-2）传感特性。我们实现了超低检测限（H-2 0.4 ppm），从而证实了PdPt NPs出色的传感性能。我们进一步展示了一个无线H-2传感系统相结合的多孔聚合物模板PdPt纳米粒子的射频识别（RFID）系统，使无线检测H-2在密封的气体顶空。
Bimetallic nanoparticles (BM-NPs) have attracted much attention in catalysis, sensing, and electronics as a result of their ultra-high activity for surface reactions. For reliable utilization of BM-NPs in various applications, robust synthetic methods for the creation of non-aggregated functional BM-NPs with diameters less than a few nanometers are needed. Herein, we present functional assemblies of ultra-small BMNPs produced within high-stability porous ion-exchange polymers. Specifically, PdPt NPs can be readily produced with precision dimensional control down to 1 nm. These PdPt NPs with porous polymers display superior hydrogen (H-2)-sensing properties at room temperature in air We achieve an ultra-low limit of detection (H-2 0.4 ppm), thereby confirming the outstanding sensing performance of the PdPt NPs. We further demonstrate a wireless H-2 -sensing system by combining porous polymer-templated PdPt NPs with a radio-frequency identification (RFID) system, which enables the wireless detection of H-2 in a sealed gas head space.