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. 2019 Nov 25;9(12):1687. doi: 10.3390/nano9121687

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Non-linear regression plot of the (a) pseudo-first-order model, (b) pseudo-second-order model, and (c) intra-particle diffusion plot for Pb(II) on PAC@Fe₃O₄ at 323, 313, and 303 K (dose = 0.03 g and pH 5).

Non-linear regression plot of the (a) pseudo-first-order model, (b) pseudo-second-order model, and (c) intra-particle diffusion plot for Pb(II) on PAC@Fe₃O₄ at 323, 313, and 303 K (dose = 0.03 g and pH 5).