MIL-88A anchoring on different morphological g-C3N4 for enhanced Fenton performance

Fe-MOF/g-C 3 N 4 is a kind of typical II structure photo-catalyst. Some works reported that this catalyst's photo-performance has intimate relations with Fe-MOFs’ morphology. But the effect of g-C 3 N 4 ’ morphology has been ignored. In this work, we prepared three kinds of different morphological g-C 3 N 4 (bulk, tubulous and rod) to support MIL-88A by ball milling method. For tubulous g-C 3 N 4 has larger surface area and largest volume and pore size, ball milling method leads to strong and intimate interaction between g-C 3 N 4 and wrapped MIL-88A, the 6%MIL-88A@tubulous g-C 3 N 4 exhibits high h + -e - separation, which benefits to the formation of main reactive species, performs the best photo-Fenton activity, which is almost 241.5 times of tubulous g-C 3 N 4 and 6.3 of MIL-88A, respectively. Besides, MIL-88A could be encapsulated by tubulous g-C 3 N 4 and keep well stability in the process of wastewater remediation. This work is of significance to promote the large-scale application of Fe-MOF/g-C 3 N 4 in waste water remediation. • Different morphological g-C 3 N 4 were prepared to support Fe-MOF. • Tubulous g-C 3 N 4 supported Fe-MOF exhibit the best photo-performance. • This material obtained high efficiency and excellent stability. • h + , O 2 · − , ·OH is the predominant active radicals.