A superior sensor consisting of porous, Pd nanoparticle-decorated SnO2 nanotubes for the detection of ppb-level hydrogen gas
A superior sensor consisting of porous, Pd nanoparticle-decorated SnO2 nanotubes for the detection of ppb-level hydrogen gas
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DOI：
10.1016/j.jallcom.2022.164459
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发表时间：
2022-03-11
影响因子：
6.2
通讯作者：
Park, Sunghoon
中科院分区：
文献类型：
--
作者：
Cai, Zhicheng;Park, Sunghoon
采用静电纺丝法制备了Pd纳米颗粒修饰的SnO 2纳米管（Pd/SnO 2 NTs），并将其应用于氢气传感器。多孔多晶Pd/SnO 2纳米管的内径和外径分别为80 nm和120 nm，修饰Pd/SnO 2纳米管的Pd纳米颗粒相对较小，平均直径为5 nm。Pd纳米颗粒的催化作用和Pd/SnO 2 NTs的大有效表面积增强了所得传感器的性能。此外，由于SnO 2纳米管的中空、多孔、多晶结构，Pd纳米颗粒以高负载量和均匀分布的每个组成颗粒进行装饰，从而最大化其催化效果。结果，Pd/SnO 2 NT传感器对10 ppm氢气的感测响应为54.43，是SnO 2 NT传感器的12.69的4.3倍。(C)2022爱思唯尔有限公司版权所有。
Pd nanoparticle-decorated SnO2 nanotubes (Pd/SnO2 NTs) are synthesized in this study by electrospinning (using a coaxial spinneret) for application as a hydrogen gas sensor. The inner and outer diameters of the porous, polycrystalline Pd/SnO2 NTs are 80 nm and 120 nm, respectively, and the Pd nanoparticles decorating the Pd/SnO2 NTs are comparatively small with an average diameter of 5 nm. The catalytic effect of the Pd nanoparticles and the large effective surface area of the Pd/SnO2 NTs enhance the performance of resulting sensor. Furthermore, owing to the hollow, porous, polycrystalline structures of the SnO2 nano tubes, Pd nanoparticles decorate with high loading and uniform distribution of each constituent grain, maximizing their catalytic effect. As a result, the sensing response of a Pd/SnO2 NT sensor to 10 ppm hydrogen gas of 54.43 is 4.3 times higher than that of a SnO2 NT sensor of 12.69. (C) 2022 Elsevier B.V. All rights reserved.