Fe3O4 nanoparticles coated with a guanidinium-functionalized polyelectrolyte extend the pH range for phosphate binding

Del University of Technology, Departm Maasweg 9, 2629 HZ Del, The Netherland Wetsus – European Centre of Excellen Oostergoweg 9, 8932 PG Leeuwarden, The N Wageningen University & Research, Labora 6708 WE Wageningen, The Netherlands. E-m † Electronic supplementary informatio synthesized PAH–Gu (Fig. S1), pictur suspensions (Fig. S2 and S3). Pseudo se pseudo second-order non-linear curve  10.1039/c7ta04054g Cite this: J. Mater. Chem. A, 2017, 5, 18476