Surface oxidation and/or corrosion behavior of glass-like carbon in sulfuric and nitric acids, and in aqueous hydrogen peroxide
Source abstract
Abstract
Surface oxidation and/or corrosion behavior of glass-like carbons (GLCs) in concentrated H2SO4, HNO3 and H2O2 aq. were investigated with scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and by weight changes. With GLCs treated in H2SO4, formation of sulfur-containing chemical species was observed, with some weight gain. However, no change was observed in morphology. With the samples treated in HNO3, the weight initially increased and, then, decreased. No nitrogen-containing chemical species were observed. Crack formation and scaling off of the upper layers were observed. With the samples treated in H2O2 aq., rapid weight loss and void formation were observed.
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Research context
OpenAlex topics: Diamond and Carbon-based Materials Research · Graphene research and applications · Gas Sensing Nanomaterials and Sensors
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