Synthesis of Highly Effective Novel Graphene Oxide-Polyethylene Glycol-Polyvinyl Alcohol Nanocomposite Hydrogel For Copper Removal

Journal of Water and Environmental Nanotechnology

ARTICLE

Serag, Eman¹  El Nemr, Ahmed¹  El-Maghraby, Azza² 

[1] Marine Pollution Department, Environmental Division, National Institute of Oceanography and Fisheries;Fabrication Technology Department, Advanced Technology and New Materials Institute, City for Scientific Research and Technology Application

关键词: Copper;    Graphene Oxide;    Hydrogel;    Polyethylene Glycol;    Polyvinyl Alcohol;   

DOI  :  10.22090/jwent.2017.04.001

学科分类：数学（综合）

来源: Iranian Environmental Mutagen Society

【 摘 要 】

A novel Graphene oxide-polyethylene glycol and polyvinyl alcohol (GO-PEG-PVA) triple network hydrogel were prepared to remove Copper(II) ion from its aqueous solution. The structures, morphologies, and properties of graphene oxide (GO), the composite GO-PEG-PVA and PEG-PVA were characterized using FTIR, X-ray diffraction, Scanning Electronic Microscope and Thermal Gravimetric analysis. A series of systematic batch adsorption experiments were conducted to study the adsorption property of GO, GO-PEG-PVA hydrogel and PEG-PVA hydrogel under different conditions (e.g. pH, contact time and Cu2+ ions concentration). The high adsorption capacity, easy regeneration, and effective adsorption–desorption results proved that the prepared GO-PEG-PVA composite hydrogel could be an effective adsorbent in removing Cu2+ ion from its aqueous solution. The maximum adsorption capacities were found to be 917, 900 and 423 mg g–1 for GO-PEG-PVA hydrogel, GO and PEG-PVA hydrogel, respectively at pH 5, 25 °C and Cu2+ ions’ concentration 500 mg l–1. The removal efficiency of the recycled GO-PEG-PVA hydrogel were 83, 81, 80 and 79% for the first four times, which proved efficient reusability.

【 授权许可】

CC BY