Abstract
Co3O4@Fe3O4/cellulose was synthesized by in-situ self-assembly strategy coating rod-like MOF-derived Fe3O4 with Co3O4 nanoparticles and blending with cellulose solution, further applied in the visible light-driven photo-Fenton system for PFOA degradation. In addition, Co3O4@Fe3O4/cellulose/Vitrimer was obtained to explore the application of self-healing property in photo-Fenton filed and the result turned out to be good self-healing capacity for small cracks. In comparison, Co3O4@Fe3O4/cellulose can degrade around 94.5% PFOA within 180 min in reaction system, which shows better degradation capacity than others catalyst. Moreover, Co3O4@Fe3O4/cellulose was reused by rinsing with ultra-pure water and the degradation capacity was still 80.4% after five cycles. In this system, the results of Electron paramagnetic resonance analysis (EPR) and scavenger experiment suggested that PFOA degradation was a co-dependent mechanism via photogenerated electrons, photogenerated holes (h+) and various radical species, rather than a single active constituent. The degradation pathway of PFOA also was proposed based on UHPLC-MS analysis.
Self-healing Co3O4@Fe3O4/cellulose Blend Membranes Efficient Degrade Perfluorooctanoic Acid in the Visible Light-driven Photo-fenton System
