Multi-walled carbon nanotube modified with methylene blue under ultraviolet irradiation as a platinum catalyst support for methanol oxidation

► MWCNT is first modified with methylene blue during ultraviolet irradiation. ► Pt nanoparticles are uniformly dispersed on functionalized MWCNT. ► Pt/f1-MWCNT shows excellent catalytic activity and stability for methanol oxidation.