Cary e 5000

In this work, the UV–VIS absorption spectra of the synthesized Cu@Pt nanoparticles were obtained from a spectrophotometer Cary E 5000 in the range of 300–800 nm using a quartz cell with 10 mm of optical path length (Agilent, USA). FTIR spectra of the samples were measured using Perkin-Elmer Spectrum 1000, in attenuated total reflection mode, and using the spectral range of 4000–380 cm⁻¹. The study also used one instrument in the diffuse reflectance mode at the resolution of 4 cm⁻¹ in KBr pellets (Perkin Elmer, USA). The obtained Cu@Pt nanoparticles were characterized using an Atomic Force Microscope (Agilent, USA). The size and morphology of the synthesized Cu@Pt nanoparticles were characterized using a Transmission Electron Microscope JEOL JEM 1200 EXII, operating at 200 kV. Moreover, we used a Scanning Electron Microscope (HR SEM) Helios NanoLab 660 (FEI). SEM imaging was performed in the immersion mode (Thermo Fisher Scientific, USA).