Abstract
We evaluated Pt dissolution from carbon supported nanoparticles (Pt/C) by inductively-coupled plasma-mass spectrometry (ICP-MS) and a channel flow double electrode (CFDE). On Pt/C, the observed both anodic and cathodic dissolution of Pt2+ under potential cycling; the later dominated at an E U of 1.4 V. Besides, the cathodic dissolution of Pt2+ decreases with increasing mean particle size (d p) of the Pt NPs. Both dissolutions were enhanced by elevating the temperature from 25 to 65 oC. The CFDE showed its applicability to dissolution tests using supported nanoparticles.
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