Response Surface Optimization on Adsorption of Methyl Blue onto Magnetic (1 − x)NiFe2O4/xSiO2 Nanocomposites
Methyl blue (MB) was adsorbed from aqueous solution by magnetic (1 − x)NiFe2O4/xSiO2 (x = 0–0.2) nanocomposites prepared via the facile solution combustion process. The effects of pH of MB solutions, silica content in
nanocomposites and the calcination temperature for nanocomposites on the adsorption capacity of MB onto nanocomposites were investigated. Response surface methodology (RSM) based on three-level three-factorial Box-behnken design (BBD) was employed to optimize the adsorption technology of MB
onto magnetic (1 − x)NiFe2O4/xSiO2 (x = 0–0.2) nanocomposites, the optimum adsorption conditions (pH value of 7.3, the silica content in nanocomposites of 10.3 wt.%, and the calcination temperature of 423 °C) were determined
by the results of statistical analysis, and the linear term of the pH value, the silica content and the calcination temperature, the quadratic term of the silica content and the calcination temperature, and the interaction of pH value and the silica content in nanocomposites were significant
factors to affect the adsorption. The adsorption capacity could reach 37.40 mg/g with the initial MB concentration of 100 mg/g under the optimum adsorption conditions.
Keywords: Adsorption; Methyl Blue; NiFe2O4/SiO2 Nanocomposites; Optimization; Response Surface Methodology; Solution Combustion Process
Document Type: Research Article
Affiliations: Affiliated Kunshan Hospital, Jiangsu University, Kunshan 215300, P. R. China
Publication date: 01 January 2018
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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