Surface functionalization graphene oxide by polydopamine for high affinity of radionuclides

Adsorption of 2,4-D on magnetic graphene and mechanism study

“…Recently, graphene and its derivatives were widely utilized as adsorbent in wastewater treatment. In previous studies, graphene/graphene based materials exhibited excellent adsorption performance for inorganic anion [16], harmful gas [17], heavy metal ions [18], radionuclides [19] and numerous organic pollutants [20][21][22][23]. For example, Moussavi et al [12] found that the maximum capacity of double-oxidized graphene oxide for acetaminophen estimated by Langmuir model was 704 mg/g.…”

Mussel inspired preparation of amine-functionalized Kaolin for effective removal of heavy metal ions

“…Yang et al [37] have developed a method to prepare a layer of protective shell on the surface of yeast cell combined with covalent conjugate and dopamine self-polymerization. Zhao et al [38] have prepared twodimensional PDA/graphene oxide by self-assembly of dopamine monomers on graphene oxide surface for removal of radioactive element uranium. Zhang et al [39e51] have fabricated welldispersed carbon nanotubes by surface modification with 3-mercapto-1-propanesulfonic acid sodium salt, normal dodecanethiol, polyethylene glycol and polymers through combination of mussel inspired chemistry and Michael addition reaction.…”

Electrochemical Deposition of Zinc Oxide on the Surface of Composite Membrane Polysulfone-Graphene-Polystyrene in the Presence of Water Soluble Polymers

“…There is the fifth peak from 291.5 eV which arises from - * electronic interactions of the graphene aromatic structure [24,25]. Meanwhile, oxygen reduction was also clearly observed during the functionalization process; thus, for G-PST sample (Figure 2(b)), the deconvoluted area of C-O groups decreased clearly while the signal of O-C=O is completely lost; also it can be noticed that the amount of C-C sp 3 species at 285 eV increased, indicating that the functionalization of G is mainly achieved via reaction with oxygenous groups, to form PST chains bonded covalently to G surface [26,27]. The attack of oxygen functional groups might stem from the fact that the C-O binding energy (351 kJ/mol) is lower than the C-C binding energy (368 kJ/mol) [28].…”