Fig. 4.
a Au 4f XPS spectra and b normalized Au L 3-edge XANES spectra of CNTs-PdAu/Pt trimetallic NPs with different Pd/Au/Pt ratios, Au/Pt bimetallic NPs, and Au NPs. The insets in b are magnified white line regions of as-obtained samples
a Au 4f XPS spectra and b normalized Au L 3-edge XANES spectra of CNTs-PdAu/Pt trimetallic NPs with different Pd/Au/Pt ratios, Au/Pt bimetallic NPs, and Au NPs. The insets in b are magnified white line regions of as-obtained samples