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

Figure 2

(a) FT-IR spectra of the natural wood, wood aerogel, TEMPO-oxidized wood aerogel, and PEI@wood aerogel; (b) XPS survey spectra of natural wood, TEMPO-oxidized wood aerogel, and PEI@wood aerogel; (c) 1s spectrum of PEI@wood aerogel.

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