Two-phase reaction system for efficient photocatalytic production of hydrogen peroxide

Abstract

Hydrogen peroxide (H2O2) has attracted considerable interest due to its status as an eco-friendly oxidant and a sustainable energy carrier. This review summarizes current advancements in various photocatalysts, including metal-organic frameworks (MOFs), covalent-organic frameworks (COFs), titanium dioxide (TiO2), ionic carbon nitride, quantum dots (QDs), coordination polymer (CP), and heterojunction materials, applied for H2O2 production in several types of two-phase systems, composed of benzyl alcohol (BA), toluene or octanol organic phase and water phase. Such two-phase media enables spontaneous separation of the produced reduction product (H2O2) from oxidation product, benzaldehyde (BAL) or octanal and photocatalysts suppressing H2O2 decomposition. The goal of the present review is to provide more fresh perspective on the future developments in the field of sustainable H2O2 production in two-phase system.