Upcycling of Wastewater via Effective Photocatalytic Hydrogen Production Using MnO Nanoparticles-Decorated Activated Carbon Nanoflakes.

In the present work, we demonstrated the upcycling technique of effective wastewater treatment via photocatalytic hydrogen production by using the nanocomposites of manganese oxide-decorated activated carbon (MnO-AC). The nanocomposites were sonochemically synthesized in pure water by utilizing MnO nanoparticles and AC nanoflakes that had been prepared through green routes using the extracts of Brassica oleracea and Azadirachta indica, respectively. MnO-AC nanocomposites were confirmed to exist in the form of nanopebbles with a high specific surface area of ~109 m/g.