Monitoring Photo-Fenton and Photo-Electro-Fenton process of contaminants emerging concern by a gas diffusion electrode using CaFeW(PO)(OH) nanoparticles as heterogeneous catalyst.

The catalytic performance of modified hydroxyapatite nanoparticles, CaFeW(PO)(OH), was applied for the degradation of methylene blue (MB), fast green FCF (FG) and norfloxacin (NOR). XPS analysis pointed to the successful partial replacement of Ca by Fe. Under photo-electro-Fenton process, the catalyst CaFeWFe(PO)(OH) was combined with UVC radiation and electrogenerated HO in a Printex L6 carbon-based gas diffusion electrode.