Graphene Oxide/Polyvinyl Alcohol-Formaldehyde Composite Loaded by Pb Ions: Structure and Electrochemical Performance.

ABSTRACT: An immobilization of graphene oxide (GO) into a matrix of polyvinyl formaldehyde (PVF) foam as an eco-friendly, low cost, superior, and easily recovered sorbent of Pb ions from an aqueous solution is described. The relationships between the structure and electrochemical properties of PVF/GO composite with implanted Pb ions are discussed for the first time. The number of alcohol groups decreased by 41% and 63% for PVF/GO and the PVF/GO/Pb composite, respectively, compared to pure PVF. This means that chemical bonds are formed between the Pb ions and the PVF/GO composite based on the OH groups. This bond formation causes an increase in the T_g values attributed to the formation of a strong surface complexation between adjacent layers of PVF/GO composite. The conductivity increases

SUBMITTER: Fahmy A 

PROVIDER: S-EPMC9183114 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature