Construction of MOF/TiO2 nanocomposites with efficient visible-light-driven photocathodic protection

The photocathodic protection is a promising technology for corrosion protection by utilizing the solar energy. Herein, a typical metal-organic framework (MOF), NH 2 -MIL-125 is introduced to construct MOF/semiconductor heterostructure via a simple two-step method. The composites, based both on TiO 2 nanotubes and coatings, exhibit improved photocathodic protection performance under visible light irradiation . The results reveal that the NH 2 -MIL-125/TiO 2 heterojunction significantly suppresses the recombination of photoinduced electron-hole pairs, ultimately achieves efficient photocathodic protection for 304SS . This research highlights the superiority of the MOF/semiconductor composites on the photocathodic protection and the universality of decorating MOF on different TiO 2 structures.