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

Figure 1

(a) Preparation process of the PEI@wood aerogel; (b–d) SEM images of the natural wood, TEMPO-oxidized wood aerogel, and PEI@wood aerogel; (e and f) EDX mapping images of the cross and radial sections of PEI@wood aerogel.

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