Amino-Functionalized Wood Aerogel for Efficient Removal of Copper Ions from Water

Figure 3

(a) Adsorption performance of natural wood, TEMPO-oxidized wood aerogel, and PEI@wood aerogel; (b) photographs of the PEI@wood aerogel before and after Cu(II) adsorption; (c) FT-IR spectra of the PEI@wood aerogel before and after Cu(II) adsorption; (d) effect of initial pH on the Cu(II) adsorption capacity.

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