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. 2019 Mar 1;9:3232. doi: 10.1038/s41598-019-39035-2

Figure 7.

Figure 7

Phosphate sorption mechanism on HNTs modified with iron oxide nanoparticles. The mechanisms that can occur include (1) electrostatic attraction, (2) ligand exchange, (3) Lewis acid-base interactions, (4) competing hydroxyl anions, and (5) and (6) electrostatic repulsion.