0D/2D CsPbBr3 Nanocrystal/BiOCl Nanoplate Heterostructure with Enhanced Photocatalytic Performance

0D-2D p–n type CsPbBr 3 /BiOCl heterojunction photocatalyst is successfully fabricated via the electrostatic self-assembly process. On the basis of the photoluminescence and photocurrent density results, the CsPbBr 3 /BiOCl composite exhibits a higher charge separation rate than pure BiOCl and CsPbBr 3 . The degradation of Rhodamine B (RhB) result shows that the CsPbBr 3 /BiOCl composite obtains the highest degradation rate of close to 100% within 60 min, which is significantly higher than those of pure CsPbBr 3 (84.21%) and BiOCl (73.57%) because the p–n type heterojunction photocatalyst can promote the separation of photogenerated charge carriers. The free radical capture experiment demonstrates that •O 2 − plays a major role in the photodegradation of RhB. This study may provide insights into designing advanced photocatalysts for the clean-ups of environmental pollutants.