Open AccessA Novel Method for the Removal of Uranium by Using Carboxyl Functionalized Graphene Oxide
Author(s) -
Khilawan Patel,
Rama Devi,
Pradeep Kumar Dewangan,
Vinayak,
Alekha Kumar Sutar,
Tungabidya Maharana
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/798/1/012029
Subject(s) - graphene , zeta potential , oxide , fourier transform infrared spectroscopy , graphite , graphite oxide , raman spectroscopy , nuclear chemistry , chemistry , scanning electron microscope , adsorption , surface charge , materials science , analytical chemistry (journal) , chemical engineering , nanotechnology , organic chemistry , nanoparticle , physics , optics , engineering , composite material
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).