A Novel Method for the Removal of Uranium by Using Carboxyl Functionalized Graphene Oxide. Issue 1 (March 2020)

• Record Type: Journal Article
• Authors: Patel, Khilawan; Devi, Rama; Dewangan, Pradeep Kumar; Vinayak, ; Sutar, Alekha Kumar; Maharana, Tungabidya
• Is Part Of: IOP conference series. Volume 798:Issue 1(2020)
• Publication Date: 2020-03
• Subjects: Removal of Uranium -- Sorption study -- Graphene Oxide -- LED Fluorimeter; Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/798/1/012029
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: Graphene oxide (GO) and functionalized carboxylic graphene oxide (COOH-GO) were successfully synthesized by modified Hummer's technique. The prepared GO and COOH-GO was characterized successfully by UV-Visible Spectroscopy, Fourier transforms infrared spectroscopy (FTIR), X-ray diffraction, Raman spectroscopy, Scanning electron microscopy (SEM)& Zeta potential. The removal of U(VI) heavy metal comparative study was done by using Graphite, GO & COOH-GO and the removal were confirmed by using LED fluorimeter. The effect of pH of medium, contact time, adsorbent dose, initial concentration of U(VI) were examined for the removal of U(VI). The extent of U(VI) removal has been found to be in the order of COOH-GO >GO> graphite. The U(VI) removal maximum efficiency was observed ~96% observed at pH 4.5. The higher removal efficiency is attributed to the higher negative surface charge of COOH-GO (zeta potential:-39.9 mV) in comparison to zeta potential of GO (-28.9 mV) &graphite (-21.6 mV).