Fig. 8

a The proposed mechanism of CO electrooxidation on the Pt(100) surface, reproduced with permission from [65]. Copyright (2020) Wiley-VCG GmbH. b The satellite structure composed of Au core/silica shells and nanocatalysts. High density of interfaces between the SHINs and nanocatalysts allow for high intensity of SERS signal. c The SEM images of the satellite structure (inset picture: TEM image of the satellite structure), reproduced with permission from [71]. Copyright (2017) Springer Nature Limited. SHINERS spectra of CO electrooxidation on the c Pt(100) and d Pt(110) surfaces in 0.1 M HClO₄ solution saturated with CO, reproduced with permission from [65]. Copyright (2020) Wiley-VCG GmbH