Hollow g‐C<sub>3</sub>N<sub>4</sub>@Ag<sub>3</sub>PO<sub>4</sub> Core–Shell Nanoreactor Loaded with Au Nanoparticles: Boosting Photothermal Catalysis in Confined Space
Yawei Xiao, Haoyu Li, Bo Yao, Kai Xiao, Yude Wang
Abstract
Abstract Low solar energy utilization efficiency and serious charge recombination remain major challenges for photocatalytic systems. Herein, a hollow core–shell Au/g‐C 3 N 4 @Ag 3 PO 4 photothermal nanoreactor is successfully prepared by a two‐step deposition method. Benefit from efficient spectral utilization and fast charge separation induced by the unique hollow core–shell heterostructure, the H 2 evolution rate of Au/g‐C 3 N 4 @Ag 3 PO 4 is 16.9 times that of the pristine g‐C 3 N 4 , and the degradation efficiency of tetracycline is increased by 88.1%. The enhanced catalytic performance can be attributed to the ordered charge movement on the hollow core–shell structure and a local high‐temperature environment, which effectively accelerates the carrier separation and chemical reaction kinetics. This work highlights the important role of the space confinement effect in photothermal catalysis and provides a promising strategy for the development of the next generation of highly efficient photothermal catalysts.