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Different morphologies of freeze-dried lignosulfonate/κ-carrageenan (a,b) and their carbon counterparts (c,d) [264]. Reprinted from International Journal of Biological Macromolecules, 148, Lv, D.; Li, Y.; Wang, L., Carbon aerogels derived from sodium lignin sulfonate embedded in carrageenan skeleton for methylene-blue removal, 979–987, Copyright 2020, with permission from Elsevier.
