2D V2C MXene/2D g-C3N4 nanosheet heterojunctions constructed via a one-pot method for remedying water pollution through high-efficient adsorption together with in situ photocatalytic degradation†

With the development of modern industry, the problems of water pollution have become increasingly serious. There is a strong need to develop highly efficient and environmentally friendly technologies to address water pollution. In this work, a novel 2D V₂C MXene/2D g-C₃N₄ nanosheet heterojunction was constructed via a one-pot method. The obtained composite materials displayed excellent purifying capacity for dye pollutants, with removal ratios for crystal violet (CV), Rhodamine B (RhB) and methylene blue (MB) of 99.5%, 99.5%, and 95% within 80 min (including an adsorption process for 50 min and photodegradation process for 27 min), respectively. The extraordinary purifying capacity was accomplished through high-efficient adsorption together with in situ photocatalytic degradation within the unique 2D/2D heterojunction structure. The successful exploitation of 2D V₂C MXene/2D g-C₃N₄ nanosheet heterojunctions provided a simple method to efficiently remedy water pollution.