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首页> 外文期刊>Nanomaterials >The Chemical Deposition Method for the Decoration of Palladium Particles on Carbon Nanofibers with Rapid Conductivity Changes
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The Chemical Deposition Method for the Decoration of Palladium Particles on Carbon Nanofibers with Rapid Conductivity Changes

机译：化学沉积法在电导率快速变化的碳纳米纤维上装饰钯颗粒

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Palladium (Pd) metal is well-known for hydrogen sensing material due to its high sensitivity and selectivity toward hydrogen, and is able to detect hydrogen at near room temperature. In this work, palladium-doped carbon nanofibers (Pd/CNFs) were successfully produced in a facile manner via electrospinning. Well-organized and uniformly distributed Pd was observed in microscopic images of the resultant nanofibers. Hydrogen causes an increment in the volume of Pd due to the ability of hydrogen atoms to occupy the octahedral interstitial positions within its face centered cubic lattice structure, resulting in the resistance transition of Pd/CNFs. The resistance variation was around 400%, and it responded rapidly within 1 min, even in 5% hydrogen atmosphere conditions at room temperature. This fibrous hybrid material platform will open a new and practical route and stimulate further researches on the development of hydrogen sensing materials with rapid response, even to low concentrations of hydrogen in an atmosphere.
机译：钯（Pd）金属因其对氢的高灵敏度和选择性而闻名于氢感测材料，并且能够在接近室温的条件下检测氢。在这项工作中，通过静电纺丝以方便的方式成功地生产了掺钯碳纳米纤维（Pd / CNF）。在所得纳米纤维的显微图像中观察到组织良好且均匀分布的钯。氢由于氢原子占据其面心立方晶格结构内八面体间隙位置的能力而导致Pd的体积增加，从而导致Pd / CNF的电阻跃迁。电阻变化约为400％，即使在室温下5％的氢气氛条件下，它也能在1分钟内迅速响应。这个纤维杂化材料平台将开辟一条新的实用途径，并激发对氢敏感材料开发的进一步研究，这些材料即使在大气中低浓度的氢下也能快速响应。

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