binding

coordination

fault

water oxidation

photocatalytic_57439

photoanodes

photocurrent

batteries_115919

root hair

pec water

bci_108035

photocatalytic_56482

photoelectrochemical_56753

sub production

microbial_86509

photocatalytic overall

adolescents_78063

concrete_35377

pec water splitting

delivery_24003

Angewandte Chemie International Edition

Solar-driven overall water splitting is an ideal way to generate renewable energy while still challenging. For the first time, this work combined covalent organic frameworks (COFs) and piezoelectric material by covalent linkages to form Z-scheme core@shell heterostructure for overall water splitting. Benefiting from the synergistic effect between the polarized electric field and photo-generated charges, as well as the precise adjustment of shell thickness, the carrier separation and utilization efficiency is greatly improved. The optimal BiFeO3 @TpPa-1-COF photocatalyst revealed hydrogen (H2 ) and oxygen (O2 ) production rates of 1416.4 and 708.2 μmol h-1 g-1 under the excitation of ultrasonication coupled with light irradiation, which is the best performance among various piezo- and COF-based photocatalysts. This provides a new sight for the practical application of highly efficient photocatalytic overall water splitting.

Piezo‐Photocatalytic Synergy in BiFeO3@COF Z‐Scheme Heterostructures for High‐Efficiency Overall Water Splitting