Journal article
Thermally treated lanthanum oxide nanoparticles-embedded polyamide composite nanofiber membrane for enhanced mechanical properties and phosphorus adsorption kinetics
Frontiers in chemistry, Vol.13, 1630889
07/24/2025
DOI: 10.3389/fchem.2025.1630889
PMCID: PMC12328448
PMID: 40778082
Abstract
Lanthanum oxide (La 2 O 3 ) nanoparticles-embedded polyamide 6 nanofiber membranes were electrospun using hexafluoroisopropanol (HFIP) as the solvent. Unlike other solvents such as formic acid and an acetone: trifluoroacetic acid (ace: TFA) mixture, HFIP allowed La 2 O 3 nanoparticles to remain well-suspended without altering their composition. Various material characterizations confirmed La 2 O 3 nanoparticles are well embedded in polyamide nanofibers. The phosphorus uptake capacity remains consistent when La 2 O 3 nanoparticles were embedded in polyamide 6 nanofibers (∼10.4 mg/g) compared to free suspended nanoparticles (∼10.3 mg/g). By optimizing post-thermal treatment, both mechanical strength (e.g., yield strength (σ y ) from 1.68 × 10 7 to 2.67 × 10 7 Pa) and adsorption kinetics (e.g., k 2 from 2.63 × 10 −2 to 1.49 × 10 −1 g/(mg·min)) were improved. This study confirms that post thermal processing can be used to further enhance the mechanical properties of the composite nanofiber membrane while maintaining its phosphate adsorption capabilities and improved adsorption kinetics.
Details
- Title: Subtitle
- Thermally treated lanthanum oxide nanoparticles-embedded polyamide composite nanofiber membrane for enhanced mechanical properties and phosphorus adsorption kinetics
- Creators
- Yun Young ChoiDavid M. CwiertnyNosang V. Myung
- Resource Type
- Journal article
- Publication Details
- Frontiers in chemistry, Vol.13, 1630889
- DOI
- 10.3389/fchem.2025.1630889
- PMID
- 40778082
- PMCID
- PMC12328448
- NLM abbreviation
- Front Chem
- ISSN
- 2296-2646
- eISSN
- 2296-2646
- Publisher
- FRONTIERS MEDIA SA
- Grant note
- NSF PFI: 1940777
The author(s) declare that financial support was received for the research and/or publication of this article. This work was funded by NSF PFI (#1940777).
- Language
- English
- Date published
- 07/24/2025
- Academic Unit
- Center for Health Effects of Environmental Contamination; Civil and Environmental Engineering; Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9984927084802771
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