We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Removal of Bisphenol A from Water by Single-Walled Carbon Nanotubes Loaded with Iron Oxide Nanoparticles.
- Authors
Chen, Luying; Jiang, Jintao; Sheng, Leimei
- Abstract
Single-walled carbon nanotubes (SWCNTs) loaded with magnetic iron oxide nanoparticles were prepared by the arc discharge method and air heat treatment. The nanocomposite was characterized by X-ray diffraction, scanning electron microscopy, Raman spectroscopy, vibrating sample magnetometry, etc. The results showed that the heat-treated nanocomposites (SWCNTs/FexOy) had iron oxide phases and superparamagnetic properties with a saturation magnetization of 33.32 emu/g. Compared with the non-heat-treated materials, SWCNTs/FexOy had a larger specific surface area and pore volume. Using SWCNTs/FexOy to remove the organic contaminant (bisphenol A, BPA), it was found that under the conditions of pH = 3 and adsorbent dosage of 0.2 g/L, the maximum adsorption capacity of the composite was 117 mg/g, and the adsorption could reach more than 90% in only 5 min when the BPA content was below 0.05 mmol/L. The fitting results of the Langmuir and D-R models are more consistent with the experimental data, indicating a relatively uniform distribution of the adsorption sites and that the adsorption process is more consistent with physical adsorption. The kinetic calculations showed that the SWCNTs/FexOy exhibits chemical effects on both the surface and the gap, and the adsorption process is controlled by the π-π bonds and the hydrophobicity of the SWCNTs/FexOy.
- Subjects
SINGLE walled carbon nanotubes; SUPERPARAMAGNETIC materials; IRON oxides; IRON oxide nanoparticles; ELECTRIC arc; HEAT treatment; BISPHENOL A; FERRIC oxide; PHYSISORPTION
- Publication
Applied Sciences (2076-3417), 2024, Vol 14, Issue 9, p3943
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app14093943