Facile synthesis of goethite anchored regenerated graphene oxide nanocomposite and its application in the removal of fluoride from drinking water. Issue 58 (13th December 2016)

• Record Type: Journal Article
• Authors: Fan, Yunfang; Fu, Dandan; Zhou, Siqi; Lu, Yiqing; Zhao, Xiaoxi; Jin, Wei; Zhao, Yaping
• Is Part Of: Desalination and water treatment. Volume 57:Issue 58(2016)
• Page Start: 28393
• Page End: 28404
• Publication Date: 2016-12-13
• Subjects: Fluoride -- Adsorption -- Iron (oxy)hydroxide -- Graphene -- Ion exchange; Saline water conversion -- Periodicals; Saline water conversion; Water -- Purification; Periodicals; 628.167
• DOI: 10.1080/19443994.2016.1179222
• Languages: English
• ISSNs: 1944-3994

Abstract

Abstract: Drinking water fluoride pollution is a worldwide environmental problem imposing serious menace to human health. Goethite anchoring regenerated graphene oxide (α-FeOOH@rGO) nanocomposite was synthesized via facile one-step hydrolysis pathway with ferrous sulfate as starting material. Fluoride adsorption efficiencies in aqueous solution were also testified through batch adsorption experiments. α-FeOOH@rGO has good defluoridation ability in a wide range of pH and has a strong anti-interference ability in the presence of high concentration foreign anions. Pseudo-second-order adsorption kinetics and Langmuir adsorption isotherms are fitted well involved in fluoride adsorption process. The FTIR and XPS results prove that defluoridation proceeds through an ion-exchange mechanism with sulfate-bearing in α-FeOOH@rGO crystal structure. It would be useful for the purpose of environmental protection in design and improvement of α-FeOOH@rGO as a cost-effective anion-exchange adsorbent.