Synthesis and property analysis of high magnetic and stable ternary composite Fe3O4/BiOBr/BiOI.

[Display omitted] • Fe 3 O 4 Fe 3 O 4 with small particles was compounded with BiOBr/BiOI(3:1) by solvothermal method. • The magnetism of Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) is larger than that of previous studies. • Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) exhibits good adsorption capacity and photocatalytic performance. • Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) presents excellent recyclability and stability. Ternary magnetic Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) with good magnetic separation performance and photocatalytic degradation performance was synthesized by two-step method. These properties remained good after repeated use for 10 times. Compared with Fe 3 O 4 /BiOBr/BiOI (0.5:2:2) prepared by other research group, the magnetism Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) were 1.76 times that of it. Compared with the previous work, Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) has advantages in magnetism, degradation activity and reusability. All results suggested that the Fe 3 O 4 /BiOBr/BiOI (1.1:3:1) with good photocatalytic performance, good magnetic separability, excellent recyclability, and stability has a good application prospect in photocatalytic degradation organic wastewater. [ABSTRACT FROM AUTHOR]