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Use of metal composite MOF‐5‐Ag 2 O‐NPs as an adsorbent for the removal of Auramine O dye under ultrasound energy conditions
Author(s) -
Hosseinpour Seyed Amin,
Karimipour Gholamreza,
Ghaedi Mehrorang,
Dashtian Kheibar
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.4007
Subject(s) - chemistry , adsorption , monolayer , langmuir adsorption model , central composite design , aqueous solution , analytical chemistry (journal) , scanning electron microscope , composite number , nuclear chemistry , langmuir , sonication , nanoparticle , response surface methodology , chemical engineering , chromatography , materials science , composite material , biochemistry , engineering
In this work, MOF‐5 composited with Ag 2 O nanoparticles was prepared and characterized via X‐ray diffraction, field emission‐scanning electron microscopy, energy‐dispersive spectroscopy and FT‐IR analysis. This new material was subsequently employed for removing basic yellow dye [Auramine O (AO)] from aqueous solution under ultrasound irradiation. Several experiments were designed by central composite design in which operational parameters such as such as pH, MOF‐5‐Ag 2 O mass and initial concentration of AO involved in the process were optimized. The significance of individual parameters and their possible interactions were investigated using analysis of variance ( anova ). The optimum values of 6, 0.025 g and 6 mg l −1 were obtained for the pH, MOF‐5‐Ag 2 O‐NPs mass and the initial concentrations of AO, respectively, with desirability of 1.0. At such conditions, the efficiency for the removal of AO was found to be 89.45%. Various isotherm models for fitting the experimental equilibrium data were studied, and it was found that the Langmuir model has the highest efficiency for correlation of experimental equilibrium data, so that the monolayer adsorption capacity of MOF‐5‐Ag 2 O for successful removal of AO was 260.70 mg g −1 at optimal conditions.