RGO-based aerogels with varied and controllable surface wettability were fabricated using different amino acids. Hydrophobic cys-RGO aerogels prepared by L-cysteine exhibited an outstanding adsorption toward oils and organic solvents, while hydrophilic lys-RGO aerogels obtained from L-lysine can be used as adsorbents for heavy metal ions in water.
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Liu et al. (2014) studied this question.
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