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Calcined Mg-Fe layered double hydroxide as an absorber for the removal of methyl orange
Author(s) -
Chao Peng,
Jing Dai,
Jianying Yu,
Jian Yin
Publication year - 2015
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4921455
Subject(s) - adsorption , hydroxide , methyl orange , x ray photoelectron spectroscopy , calcination , fourier transform infrared spectroscopy , aqueous solution , endothermic process , nuclear chemistry , chemistry , layered double hydroxides , inorganic chemistry , infrared spectroscopy , materials science , chemical engineering , photocatalysis , organic chemistry , catalysis , engineering
In this work, methyl orange (MO) was effectively removed from aqueous solution with the calcined product of hydrothermal synthesized Mg/Fe layered double hydroxide (Mg/Fe-LDH). The structure, composition, morphology and textural properties of the Mg/Fe-LDH before and after adsorption were characterized by X-ray diffraction, Fourier transformation infrared spectroscopy, transmission electron microscopy, nitrogen adsorption apparatus and X-ray photoelectron spectroscopy. It was confirmed that MO had been absorbed by calcined Mg/Fe-LDH which had strong interactions with MO. The adsorption of MO onto the Mg/Fe-LDH was systematically investigated by batch tests. The adsorption capacity of the Mg/Fe-LDH toward MO was found to be 194.9 mg • g−1. Adsorption kinetics and isotherm studies revealed that the adsorption of MO onto Mg/Fe-LDH was a spontaneous and endothermic process. These results indicate that Mg/Fe-LDH is a promising material for the removal of MO

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