Abstract
Graphene, g-C3N4/graphene (NG), CF2-modified g-C3N4/graphene (FNG) films were in situ grown on roving fabric via PECVD, in which Zinc nanoparticles (Zn-NPs) acted as an enhancer integrated by a following chemical method. The nanostructures were revealed by high-resolution TEM, the self-cleaning performance in Zn(NO3)2 solution was evaluated, and the interaction model was established with DFT calculation. Results show that the NG@Zn-NPs film presents tightly bound zinc nanoparticles, which are stacked with the NG; whereas the FNG@Zn-NPs film is enriched with the F atoms, which alleviate stacking structure and improves bonding force of Zn-NPs with the FNG surface. The heavy metal ions are efficiently precipitated through the NG@Zn-NPs and FNG@Zn-NPs films. Moreover, the superhydrophobicity of FNG@Zn-NPs film is enhanced by the charge density around the CF2 functional groups, which further improves self-cleaning performance.
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