Construction of Carbon Dot-Modified g-C3N4/BiOIO3 Z-Scheme Heterojunction for Boosting Photocatalytic CO2 Reduction under Full Spectrum Light

In this study, we successfully constructed a Z-scheme BiOIO3/CQDs/g-C3N4 (BCCN) composite modified with carbon quantum dots (CQDs) for photocatalytic CO2 reduction. A series of characterization approaches and testing technologies were carried out to investigate the components, morphologies, and optical properties of the fabricated photo-catalysts. The 0.015B0.01CCN displayed an efficient photo-catalytic CO2 reduction activity within 7 h full spectrum light irradiation, producing CO with a rate of 117.88 smol gcat-1. The enhanced photocatalytic (2)(CO) reduction of the BCCN composite can be attributed to the synergistic effects of CQDs and the Z-scheme heterojunction. This work presents a new insight into integrating CQDs with g-C3N4 and BiOIO3 for the positive synergetic effect to obtain a high-efficient photocatalyst.

Automated summary

In this study, a Z-scheme BiOIO3/CQDs/g-C3N4 composite modified with carbon quantum dots (CQDs) was successfully constructed for photocatalytic CO2 reduction. The experimental results demonstrated that the composite exhibited efficient photocatalytic activity.