Preparation of Fe3O4@SiO2@MnO2 microspheres as an adsorbent for Th(IV) removal from aqueous solution
Creators
- 1. University of South China, Hengyang (China). School of Chemistry and Chemical Engineering
Description
A magnetic nano-composites Fe3O4@SiO2@MnO2 were fabricated for efficient removal of Th(IV) from aqueous solutions, and characterized by SEM, TEM, XRD, FT-IR, BET, VSM, TGA and XPS. And the sorption of Th(IV) on Fe3O4@SiO2@MnO2 were investigated as a function of pH, adsorbent dosage and initial Th(IV) concentration. The results showed that the adsorption maximum was 53.19 mg g-1 for Th(IV) at pH = 3.5 and T = 298 K. In addition, the adsorption kinetics followed the second-order kinetic model, and the adsorption isotherm could be perfectly depicted by the Langmuir model. Finally, XPS analysis illustrated that the lattice oxygen (M-O) and the surface hydroxyl oxygen (M-OH) participated in adsorption. In brief, the Fe3O4@SiO2@MnO2 material could efficiently eliminate Th(IV) from aqueous solutions, which might become a promising material for adsorbing Th(IV) from environmental wastewater. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Radioanalytical and Nuclear Chemistry
- Journal Volume
- 329
- Journal Issue
- 1
- Journal Page Range
- p. 253-263
- ISSN
- 0236-5731
- CODEN
- JRNCDM
INIS
- Country of Publication
- Hungary
- Country of Input or Organization
- Hungary
- INIS RN
- 52075600
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ADSORPTION; AQUEOUS SOLUTIONS; IRON OXIDES; MAGNETIC MATERIALS; MANGANESE OXIDES; MICROSPHERES; NANOCOMPOSITES; SILICON OXIDES; THORIUM
- Descriptors DEC
- ACTINIDES; CHALCOGENIDES; DISPERSIONS; ELEMENTS; HOMOGENEOUS MIXTURES; IRON COMPOUNDS; MANGANESE COMPOUNDS; MATERIALS; METALS; MIXTURES; NANOMATERIALS; OXIDES; OXYGEN COMPOUNDS; SILICON COMPOUNDS; SOLUTIONS; SORPTION; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Notes
- 47 refs.