Fabrication of 2D/2D BiOBr/g-C₃N₄ with efficient photocatalytic activity and clarification of its mechanism

Abstract

Precise regulating photoexcited charge carrier for separation-transportation is a core for practical application in the photocatalysis field. Herein, 2D/2D BiOBr/g-C3N4 heterojunction is prepared by a self-assembly method and exhibits enhanced...

Temperature‐Dependent Photoredox Catalysis for CO2 Reduction Coupled with Selective Benzyl Alcohol Oxidation over ZnIn2S4/In2O3 Heterostructure

“…[ 38 ] Under light illumination, ZIS/In 2 O 3 hybrid exhibited a higher photocurrent density ( Figure a) and a smaller charge transfer resistance (Figure 6b) than those of bare ZIS and In 2 O 3 , indicating that the ZIS/In 2 O 3 possessed much‐enhanced charge separation efficiency and transfer ability. [ 49 ] For photocatalysts, the shorter emission lifetime represents that the photogenerated charge carriers can be better separated, [ 52,53 ] and as expected, Figure 6c showed that the average emission lifetime of ZIS/In 2 O 3 (3.71 ns) was shorter than that of ZIS (6.72 ns) and In 2 O 3 (9.23 ns). These characterizations well certified that the construction of ZIS/In 2 O 3 heterostructure endowed this composite with a highly ameliorated charge separation and transport, therefore achieving the optimum catalytic activity.…”

“…Generally, the negative and positive shifts of the XPS peaks tend to represent the increase and decrease of electron density, respectively. [ 30,31,52 ] Therefore, the binding energy shifts manifested that the charge carriers (electrons for n‐type semiconductors) migrated from In 2 O 3 into ZIS. When the equilibrium is achieved, the IEF can be built at the interfaces of ZIS/In 2 O 3 heterostructure with a direction of In 2 O 3 → ZIS.…”