Fig. 3From: PtNi Alloy Cocatalyst Modification of Eosin Y-Sensitized g-C3N4/GO Hybrid for Efficient Visible-Light Photocatalytic Hydrogen EvolutionXPS spectra of (a) C 1 s, (b) N 1 s and (c) O 1 s for the g-C3N4/PtNi/GO-0.5% sample. d XPS spectra of Pt 4f for the g-C3N4/Pt/GO-0.5% and g-C3N4/PtNi/GO-0.5% samples. e XPS spectra of Ni 2p for the g-C3N4/Ni/GO-2% and g-C3N4/PtNi/GO-2% samplesBack to article page