This application relates to the field of nanophotocatalytic materials technology, and discloses a
conjugated polyelectrolyte / mesoporous nano-
titanium dioxide composite photocatalyst, its preparation method, and its application. The preparation method includes: dissolving Pluronic F127 in
tetrahydrofuran to obtain a homogeneous solution; adding glacial
acetic acid and
hydrochloric acid to the solution and stirring until homogeneous to obtain a precursor solution; rapidly adding tetrabutyl
titanate to the precursor solution and stirring until homogeneous; then removing the
solvent and crystallizing in situ; collecting the
solid phase and calcining it to obtain mesoporous
titanium dioxide; dispersing the
conjugated polyelectrolyte (CPEs) in a
solvent, then adding the mesoporous
titanium dioxide for self-
assembly, removing the
solvent, and obtaining the composite photocatalyst. The composite photocatalyst prepared in this application exhibits a wider visible
light response range and superior
photocatalytic water splitting for
hydrogen production. It can fully utilize the photosensitization and charge transport advantages of CPEs under extremely low loading conditions, achieving excellent photocatalytic
hydrogen production performance without the need for
noble metal co-catalysts.