Study structure characteristics and the photocatalytic activities degradation of RhB solution on C/g-C3N4/PVDF membrane material

Abstract

Heterogeneous carbon/graphite carbon nitride/polyvinylidene fluoride (C/g-C₃N₄/PVDF) composite materials were successfully synthesized by a simple phase inversion method. The morphology, structure, and photocatalytic activity of C/g-C₃N₄ particles and composite films were evaluated. Thanks to the synergistic effect between carbon and g-C₃N₄ dispersed on the PVDF membrane acting as a catalyst, the ability to decompose rhodamine B dye in solution was significantly improved. Specifically, the C/g-C₃N₄/PVDF material exhibited the highest photocatalytic efficiency (H = 89%) compared to the g-C₃N₄/PVDF material (H = 45,92%) after 160 minutes of illumination under visible light. The method of putting materials on the membrane has overcome the inherent disadvantages of traditional catalysts, such as difficulty in recovery and the ability to reuse the catalyst with low efficiency after many cycles. Therefore, this study is expected to be prospectively extended in photocatalysis for the treatment of polluted water.