Platinum deposition on functionalised graphene for corrosion resistant oxygen reduction electrodes.

ABSTRACT: Graphene-related materials are promising supports for electrocatalysts due to their stability and high surface area. Their innate surface chemistries can be controlled and tuned via functionalisation to improve the stability of both the carbon support and the metal catalyst. Functionalised graphenes were prepared using either aryl diazonium functionalisation or non-destructive chemical reduction, to provide groups adapted for platinum deposition. XPS and TGA-MS measurements confirmed the presence of polyethyleneglycol and sulfur-containing functional groups, and provided consistent values for the extent of the reactions. The deposited platinum nanoparticles obtained were consistently around 2 nm via reductive chemistry and around 4 nm via the diazonium route. Although

SUBMITTER: Rubio N 

PROVIDER: S-EPMC9514556 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature