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- W2000246838 abstract "Small amounts of Pd served as a reducing agent to produce sub-100 nm polygonally-shaped Ni98Pd2 materials in ethylene glycol. As-synthesized particles were crystallized into fcc Ni with a fraction of β-Ni(OH)2, and exhibited very low to no activity towards ammonia electrooxidation. Their catalytic activity has been significantly improved by building up a layer of Ni(OH)2 by cyclic voltammetry between −0.95 and 1.35 V vs. HgO/Hg in NaNO3 at pH 9. XPS analysis before and after the electrochemical treatment confirmed the transformation of Ni0 to higher state of oxidation. Ammonia electrooxidation on Ni(OH)2/NiPd occurred at around 1.28 V vs. HgO/Hg and was highly pH-dependent. At concentrations less than 100 mM, the direct electron transfer took place, whereas at higher ammonia concentrations it was the indirect electron transfer mechanism. A 9-h galvanostatic electrolysis at 20 mA cm−2 showed that 64% of the initial ammonia was degraded at 38% average current efficiency." @default.
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- W2000246838 date "2014-01-01" @default.
- W2000246838 modified "2023-09-30" @default.
- W2000246838 title "Electrochemical behavior of ammonia on Ni98Pd2 nano-structured catalyst" @default.
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- W2000246838 doi "https://doi.org/10.1016/j.ijhydene.2013.10.024" @default.
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