Novel mesoporous trimetallic strontium magnesium ferrite (Sr0.3Mg0.7Fe2O4) nanocubes: A selective and recoverable magnetic nanoadsorbent for Congo red
| Autor: | Anujit Ghosal, Rangnath Ravi, Sajid Iqbal, Sharif Ahmad |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Langmuir
Aqueous solution Materials science Mechanical Engineering Metals and Alloys Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Congo red chemistry.chemical_compound Adsorption chemistry Chemical engineering Mechanics of Materials Materials Chemistry Surface modification Freundlich equation 0210 nano-technology Mesoporous material |
| Zdroj: | Journal of Alloys and Compounds. 791:336-347 |
| ISSN: | 0925-8388 |
| Popis: | Surface functionalized tri-metallic strontium magnesium ferrite (Sr0.3Mg0.7Fe2O4, SMF) nanoparticles were synthesized by using facile solvent less green oleo polyol method. Various analytical techniques (XRD, XPS, FT-IR, TEM, SEM, BET, and VSM) were used for the investigation of the crystal lattice, surface functionalization, morphology, surface area, and magnetic properties of these nanoparticles. SEM and TEM analysis revealed that the nanoparticles exhibit mesoporous morphology with cubic structure. These mesoporous nanoparticles have been exploited for the removal of toxic organic pollutant (Congo red, CR) from the aqueous solution. Detailed investigations on the adsorption of CR dye by these nanoparticles have been conducted via the rate kinetics study using various adsorption isotherms (Freundlich, Langmuir, Temkin, etc.). These studies revealed that the mesoporous SMF nanoparticles with the high surface area (21.85 m2g−1), have exhibited superior adsorption capacity (>90% within 30 min) and fast separation ability under the influence of external magnetic field along with good recyclability (∼93%). The adsorption analysis of magnetic SMF revealed pseudo-second order dye removal kinetics and follow Freundlich isotherms. These properties of magnetic SMF nanocubes provide an extra edge over other such reported systems and may find its potential as a cost-effective magnetic adsorbent for water treatment application. |
| Databáze: | OpenAIRE |
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