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Characterization of [La(OH)2]+[ARS]− IOH-NPs: (a) Scheme illustrating the aqueous synthesis of [La(OH)2]+[ARS]− IOH-NPs with photos showing the color of suspensions at different pH values; (b) Particle size distribution according to DLS (in water) and statistical evaluation of >100 particles on SEM images; (c) SEM image; (d) FT-IR spectrum (Na(ARS) as a reference) (modified illustration from reference [9]).
