The introduction of second-phase materials to construct heterojunctions and the addition of co-catalysts can effectively improve the photoelectrochemical performance of semiconductor materials.In this study,Ti3C2-WO3/SrTiO3 composites were designed and prepared to protect 304 stainless steel(304 SS)by photochemical cathodic protection technology in simulated sunlight environment.The results show that the photoelectrochemical cathodic protection performance of Ti3C2-WO3/SrTiO3 composites is significantly enhanced.Coupling 304 SS with Ti3C2-WO3/SrTiO3 composites transfers the potential of 304 SS from-0.13 V to-0.42 V,and the ternary composites produce a photocurrent density 7 times higher than SrTiO3 alone.The heterojunction electric field formed at the WO3/SrTiO3 interface and the addition of co-catalyst Ti3C2 synergistically improve the separation efficiency of photogenerated electrons and holes,and improve the photoelectrochemical cathodic protection performance.
NETL
NSTL
万方数据
