“…3): particles of a clay mineral palygorskite (polydisperse rods of surface charge ca. 0.7 μC/cm 2 , average size 500/20 nm [22][23][24] and 200/10 nm [18]); γ -Al 2 O 3 particles (polydisperse aggregates of spheres of diameter about 20 nm, average length of the aggregates ca. 300 nm) [25][26][27]; and β-FeOOH particles (monodisperse ellipsoids of major and minor axes 285 ± 11 and 71 ± 4 nm, respectively) [28].…”