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Fe(3)O(4) Nanoparticles Grown on Cellulose/GO Hydrogels as Advanced Catalytic Materials for the Heterogeneous Fenton-like Reaction
[Image: see text] Cellulose/graphene oxide (GO)/iron oxide (Fe(3)O(4)) composites were prepared by coprecipitating iron salts onto cellulose/GO hydrogels in a basic solution. X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared, and X-ray diffraction characterization showed that Fe(3)O...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6648787/ https://www.ncbi.nlm.nih.gov/pubmed/31459688 http://dx.doi.org/10.1021/acsomega.9b00170 |
Sumario: | [Image: see text] Cellulose/graphene oxide (GO)/iron oxide (Fe(3)O(4)) composites were prepared by coprecipitating iron salts onto cellulose/GO hydrogels in a basic solution. X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared, and X-ray diffraction characterization showed that Fe(3)O(4) was successfully coated on GO sheets and cellulose. Cellulose/GO/Fe(3)O(4) composites showed excellent catalytic activity by maintaining almost 98% of the removal of acid orange 7 (AO7) and showed stability over 20 consecutive cycles. This performance is attributable to the synergistic effect of Fe(3)O(4) and GO during the heterogeneous Fenton-like reaction. Especially, the cellulose/GO/Fe(3)O(4) composites preserve their activity by keeping the ratio of Fe(3+)/Fe(2+) at 2 even after 20 catalysis cycles, which is supported by XPS analysis. |
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