ORIGINAL RESEARCH article
Front. Chem.
Sec. Electrochemistry
Volume 13 - 2025 | doi: 10.3389/fchem.2025.1630889
This article is part of the Research TopicHonoring Prof. Yong Ho Choa: Innovations in Energy and Environmental Sustainability in South KoreaView all articles
Thermally Treated Lanthanum Oxide Nanoparticles-Embedded Polyamide Composite Nanofiber Membrane for Enhanced Mechanical Properties and Phosphorus Adsorption Kinetics
Provisionally accepted
- 1University of Notre Dame, Notre Dame, United States
- 2University of Iowa, Iowa City, United States
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Lanthanum oxide (La2O3) 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 La2O3 nanoparticles to remain well-suspended without altering their composition. Various material characterizations confirmed La2O3 nanoparticles are well embedded in polyamide nanofibers. The phosphorus uptake capacity remains consistent when La2O3 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 (σy) from 1.68 X 107 to 2.67 × 107 Pa) and adsorption kinetics (e.g., k2 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.
Keywords: Electrospinning, Phosphorous removal, Flexible nanofiber, Nylon, Lanthanum oxide
Received: 18 May 2025; Accepted: 30 Jun 2025.
Copyright: © 2025 Choi, Cwiertny and Myung. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Nosang Vincent Myung, University of Notre Dame, Notre Dame, United States
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