The Pd catalyst effect on low temperature hydrogen desorption from hydrided ultrathin Mg nanoblades

作者：Fei Tang, Thomas Parker, Hua-Peng Li, G-C Wang, T-M Lu · 发表于：Nanotechnology · 年份：2008 · DOI：10.1088/0957-4484/19/46/465706 · 被引用次数：33 · 研究领域：Hydrogen Storage and Materials、Ammonia Synthesis and Nitrogen Reduction、Boron and Carbon Nanomaterials Research

We present hydrogenation/de-hydrogenation properties of ultrathin Mg nanoblades coated with Pd as a catalyst. The hydrided Pd/Mg/Pd and Pd/Mg nanoblades were highly curved as observed by ex situ scanning electron microscopy. An in situ thermal desorption spectroscopy (TDS) study showed that the hydrided Pd/Mg/Pd nanostructure has a low hydrogen desorption temperature, at ∼365 K. Through a combinational microstructure and TDS analysis of hydrided Pd/Mg/Pd nanoblades as well as hydrided Pd/Mg/Pd nanoblades covered with an additional ultrathin Mg layer, we found that the effect of Pd catalyst on reducing the hydrogen desorption temperature is significantly stronger than the conventionally proposed mechanisms due to grain size and strain.