Lead(II) adsorption onto the graphene layer of carbonaceous materials in aqueous solution

By M. Machida, T. Mochimaru, H. Tatsumoto. 2006

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Adsorptive remediation of environmental pollutants using novel graphene-based nanomaterials (2013, background): “[75] investigated Pb adsorption onto a graphene layer of activated carbon and charcoal and found that acidic oxygen sites from carboxylic and lactonic groups and basic sites from p electrons on graphene layer would be responsible for the Pb adsorption.”
The application of graphene-based materials for the removal of heavy metals and radionuclides from water and wastewater (2017, background): “Surface functional groups of graphene-based materials for complexation and ion exchange are found to be hydroxyl, carboxylic, lactonic, phenolic, imine, amine, and sulfonated groups (Dong et al., 2015; Fang et al., 2014; Machida et al., 2006; Sun et al., 2013; Yao et al., 2016).”
Highly Efficient Removal of Cu(II) from Aqueous Solution by Using Graphene Oxide (2012, background): “These oxygenous groups can react with heavy metal ions to form a metal ion complex (Atieh et al. 2010; Machida et al. 2006).”