However, as the sample pH surpasses 3, the removal of metal ions demonstrates an increasing trend, culminating in maximum values of 340.0 and 385.0 mg g –1 for Ni(II) and Cu(II), respectively, within the pH range of 4–7 ( Figure 5 A).
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In Situ Fabrication and Characterization of g-C<sub>3</sub>N<sub>4</sub> onto Cellulose Nanofibers and Selective Separation of Heavy Metal Ions.
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