Allotropic Carbon Nanoforms as Advanced Metal-Free Catalysts or as Supports

Scheme 17

Proposed mechanism for the photoinduced catalytic Fenton generation of radicals at neutral pH values by visible light irradiation of Au-DNPs. The light is absorbed by Au NPs that exhibit a visible band at about 560 nm (surface plasmon band). Light absorption triggers electron ejection that causes the reduction of H₂O₂ and formation of radical.