Characterization of nanocrystalline palladium for solid state gas sensor applications
作者： F.A. Volkening , M.N. Naidoo , G.A. Candela , R.L. Holtz , V. Provenzano
DOI: 10.1016/0965-9773(95)00242-7
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摘要: Abstract Nanocrystalline Pd has been synthesized by the inert gas condensation technique, consolidated into pellets, and characterized x-ray diffraction scanning electron microscopy. The hydrogen absorption/desorption properties of these materials were investigated to demonstrate their application solid state sensor development. These nanocrystalline exhibited fast response complete recovery up exposure several percent hydrogen. Suppression α-βphase transition also was observed. temperature dependence response/recovery rates indicate that rate controlling step for absorption is dissociative chemisorption on surface Pd, whereas desorption, diffusion out palladium metal controlling.
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