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- W1986227306 abstract "A model is presented regarding the mechanistic properties associated with the interaction of hydrogen with nanoporous palladium (np-Pd) films prepared using a spontaneous galvanic displacement reaction (SGDR), which involves PdCl2 reduction by atomic Ag. Characterization of these films shows both chemical and morphological factors, which influence the performance characteristics of np-Pd microcantilever (MC) nanomechanical sensing devices. Raman spectroscopy, uniquely complemented with MC response profiles, is used to explore the chemical influence of palladium oxide (PdO). These combined techniques support a reaction mechanism that provides for rapid response to H2 and recovery in the presence of O2. Post-SGDR processing via reduction of PdCl2(s) in a H2 environment results in a segregated nanoparticle three-dimensional matrix dispersed in a silver layer. The porous nature of the reduced material is shown by high resolution scanning electron microscopy. Extended grain boundaries, typical of these materials, result in a greater surface area conducive to fast sorption/desorption of hydrogen, encouraged by the presence of PdO. X-ray diffraction and inductively coupled plasma-optical emission spectroscopy are employed to study changes in morphology and chemistry occurring in these nanoporous films under different processing conditions. The unique nature of chemical/morphological effects, as demonstrated by the above characterization methods, provides evidence in support of observed nanomechanical response/recovery profiles offering insight for catalysis, H2 storage and improved sensing applications." @default.
- W1986227306 created "2016-06-24" @default.
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- W1986227306 date "2012-10-23" @default.
- W1986227306 modified "2023-09-26" @default.
- W1986227306 title "Characterization of hydrogen responsive nanoporous palladium films synthesized via a spontaneous galvanic displacement reaction" @default.
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- W1986227306 doi "https://doi.org/10.1088/0957-4484/23/46/465403" @default.
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