Improved hydrogen uptake of metal modified reduced and exfoliated graphene oxide
Source abstract
Abstract
This study investigated and compared the extent of structural modification and hydrogen uptake of reduced and exfoliated graphene oxides on addition of platinum, nickel and palladium. The addition of all metals affected structure and improved hydrogen uptake but the extent depended on preparation and type of metal. Surface area and pore volume decreased on addition of metals to RGO but increased for EGO. Dense structure of RGO was not affected by platinum, however, changed significantly to fluffy structure on addition of nickel and palladium. The separation of layers increased on addition of palladium to fluffy EGO resulting in its highest surface area and pore volume of 449 m2/g and 2 cm3/g, respectively. The highest hydrogen uptake of 3.52 wt% was obtained for Pd/EGO (at − 196 °C, 30 bar) and may be attributed to high surface area, pore volume, O/C ratio and dispersion of palladium particles.
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Research context
OpenAlex topics: Graphene research and applications · Advancements in Battery Materials · Supercapacitor Materials and Fabrication
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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