Fe-containing polyoxometalate clusters were coupled with carbon nitride to construct heterogeneous Fenton-like photocatalysts. Oxygen doping of carbon nitride was beneficial for the formation of strongly coupled interfaces, which not only contributed to the surface activation of oxygen molecules, but also facilitated the charge transfer from carbon nitride to polyoxometalate clusters. Due to the enhanced ability for generating peroxide radicals and the increased reactive sites for Fenton-like reactions, strongly coupled composites presented 6 times higher activity for the degradation of sulfosalicylic acid, compared to pristine carbon nitride. Our work offers an avenue to construct polyoxometalates/carbon nitride composite catalysts for synergistic contaminant removal.

含铁的多金属氧酸盐簇与氮化碳偶合以构建非均相的Fenton样光催化剂。氮化碳的氧掺杂有利于形成强耦合界面，这不仅有助于氧分子的表面活化，而且还促进了电荷从氮化碳向多金属氧酸盐簇的转移。由于产生过氧化物自由基的能力增强，并且芬顿样反应的反应位点增加，与原始氮化碳相比，强偶联复合材料的磺基水杨酸降解活性提高了6倍。我们的工作为构建用于协同去除污染物的多金属氧酸盐/氮化碳复合催化剂提供了一条途径。