In this paper, a novel Ta 3 N 5 /g-C 3 N 4 metal/non-metal nitride hybrid was successfully synthesized by a facile impregnation method. The photocatalytic activity of Ta 3 N 5 /g-C 3 N 4 hybrid nitrides was evaluated by the degradation of organic dye rhodamine B (RhB) under visible light irradiation, and the result indicated that all Ta 3 N 5 /g-C 3 N 4 samples exhibited distinctly enhanced photocatalytic activities for the degradation of RhB than pure g-C 3 N 4 . The optimal Ta 3 N 5 /g-C 3 N 4 composite sample, with Ta 3 N 5 mass ratio of 2%, demonstrated the highest photocatalytic activity, and its degradation rate constant was 2.71 times as high as that of pure g-C 3 N 4 . The enhanced photocatalytic activity of this Ta 3 N 5 /g-C 3 N 4 metal/metal-free nitride was predominantly attributed to the synergistic effect which increased visible-light absorption and facilitated the efficient separation of photoinduced electrons and holes. The Ta 3 N 5 /g-C 3 N 4 hybrid nitride exhibited excellent photostability and reusability. The possible mechanism for improved photocatalytic performance was proposed. Overall, this work may provide a facile way to synthesize the highly efficient metal/metal-free hybrid nitride photocatalysts with promising applications in environmental purification and energy conversion.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films