ACS AuthorChoiceChen, YianPötschke, PetraPionteck, JürgenVoit, BrigitteQi, Haisong2022-08-182022-08-182019https://oa.tib.eu/renate/handle/123456789/10067http://dx.doi.org/10.34657/9105Cellulose/graphene oxide (GO)/iron oxide (Fe3O4) 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 Fe3O4 was successfully coated on GO sheets and cellulose. Cellulose/GO/Fe3O4 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 Fe3O4 and GO during the heterogeneous Fenton-like reaction. Especially, the cellulose/GO/Fe3O4 composites preserve their activity by keeping the ratio of Fe3+/Fe2+ at 2 even after 20 catalysis cycles, which is supported by XPS analysis.enghttps://pubs.acs.org/page/policy/authorchoice_termsofuse.html540660CompositesDegradationDyes and pigmentsHydrogelsNanoparticlesArticle