Structural Engineering of Platinum‐Containing Organic Photovoltaic Catalysts for Solar‐Driven Hydrogen Production: A Review

Abstract Over the past five years, donor/acceptor (D/A) bulk heterojunction (BHJ) photocatalysts, leveraging organic photovoltaic (OPV) materials, have witnessed remarkable progress in photocatalytic water splitting for hydrogen production. By integrating donor and acceptor materials with complementary absorption spectra, D/A BHJ photocatalysts achieve broad‐spectrum light harvesting spanning from ultraviolet to near‐infrared wavelengths. The nanoscale phase separation between donor and acceptor domains ensures efficient exciton dissociation, thereby enhancing solar energy conversion efficiency. In this mini‐review, we explore how structural engineering strategies can transform high‐performance OPV materials into efficient photocatalysts. Additionally, we highlight current challenges and provide forward‐looking insights into three critical areas: hydrogen evolution rates, long‐term stability, and cost‐effectiveness.