Hydrogen Peroxide Production by Inorganic Photocatalysts Consisting of Gold Nanoparticle and Metal Oxide toward Oxygen Cycle Chemistry
Hiroaki Tada, Miwako Teranishi, Shin‐ichi Naya
Abstract
Hydrogen peroxide (H 2 O 2 ) is not only a versatile clean and strong oxidant but also a promising fuel for fuel cells. This Feature Article has shown that gold nanoparticle (NP)-loaded metal oxides (Au/MOs) can be promising photocatalysts for H 2 O 2 production via two electron-oxygen reduction reaction (2e – -ORR). The fundamental parts deal with the general requirements for the H 2 O 2 synthesis, electrocatalytic activity of Au NPs for 2e – -ORR, Fermi level control of the Au NP of Au/MOs in the dark and under light irradiation, and the factors for governing the catalytic activity for H 2 O 2 production. Subsequently, an artificial photosynthesis of H 2 O 2 from water and O 2 under visible light irradiation at ambient temperature and pressure is described. Finally, the conclusions are summarized with a direction of the future research on the hot topics.