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. 2022 Dec 5;27(23):8574. doi: 10.3390/molecules27238574

Figure 6.

Figure 6

(A) The principle of CMC/PAAm semi-IPN hydrogel preparation, sorption of Cu(II) ions, synthesis of CuNPs, and catalytic reduction of 4-NP to 4-AP (Reprinted with permission from Ref. [79]. Copyright 2019 Elsevier.) (B) Comparison between Cu(II), Pb(II), and Cd(II) ions sorption by CMC/PAAm semi-IPN hydrogels in mono- and multi-component systems Reprinted with permission from Ref. [79]. Copyright 2019 Elsevier.) (C) UV–vis adsorption spectra of 4-NP solution in the presence of CuNPs-loaded CMC/PAAm semi-IPN hydrogel and NaBH4 Reprinted with permission from Ref. [79]. Copyright 2019 Elsevier.) (D) Selective HMIs removal by lignin/CS/PAAm IPN hydrogel at different initial concentrations (Reprinted with permission from ref. [82]. Copyright 2022 Elsevier).