Journal
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
Volume 174, Issue -, Pages 319-329Publisher
ELSEVIER
DOI: 10.1016/j.ijbiomac.2021.01.184
Keywords
Perfluorooctanoic acid; Lignin-based electrospun nanofibers; Bimetallic metal-organic frameworks; Sulfate radicals; Solar light
Funding
- National Natural Science Foundation of China [21806096]
- China Postdoctoral Science Foundation [2020M683412]
- Natural Science Basic Research Plan in Shaanxi Province [2019JQ-781]
- Special Research Program of Shaanxi Provincial Department of Education [20JK0541]
- National Demonstration Center for Experimental Light Chemistry Engineering Education [2018QGSJ02-19]
Ask authors/readers for more resources
The lignin/PVA/bi-MOFs composite membrane was fabricated for catalytic degradation of PFOA under solar light irradiation. It showed outstanding performance with 89.6% of PFOA degraded within 3 hours under optimal conditions.
Perfluorooctanoic acid (PFOA) has demonstrated potential toxicity to human health and has been detected indifferent environmental matrices due to its stable physical and chemical properties. To degrade PFOA under solar light irradiation, we fabricated a lignin/polyvinyl alcohol (PVA)/Co/Fe metal-organic frameworks (lignin/PVA/bi-MOFs) composite membrane via a typical electrospinning and in-situ solvothermal method for the catalytic degradation of PFOA. In the peroxymonosulfate (PMS)/membranes/solar light system, Electron paramagnetic resonance analysis (EPR) demonstrated the sulfate radicals (SO4 center dot-) and hydroxyl radicals (OH center dot) were generated by activating PMS with transition metal and solar light irradiation. Lignin/PVA/bi-MOFs showed outstanding performance in that 89.6% of PFOA was degraded within 3 h under optimal conditions. Compared with that in solar light, only 59.6% PFOA was degraded in the dark, and the rate constant of PFOA degradation decreased from 0.0150 min(-1) to 0.0046 min(-1). Moreover, lignin/PVA/bi-MOFs were reused after simply rinsing with ultra-pure water and the degradation capacity of lignin/PVA/bi-MOFs remained at 77% after 4 cycles. The results might provide a new concept for the design of bimetallic MOFs for applications in organic pollutant removal. (C) 2021 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available