Fig. 2From: Hybrid Nanomaterials Based on Graphene and Gold Nanoclusters for Efficient Electrocatalytic Reduction of Oxygen a XRD patterns, b XPS survey spectra, and c XPS Au 4f electron spectra of RGO and nanocomposite of AuNCs:RGO = 1:2, 1:1, and 2:1, respectivelyBack to article page