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Sustainable Electrospun Affinity Membranes for Water Remediation by Removing Metal and Metal Oxide Nanoparticles

Title data

Müller, Ann-Kathrin ; Xu, Zhi-Kang ; Greiner, Andreas:
Sustainable Electrospun Affinity Membranes for Water Remediation by Removing Metal and Metal Oxide Nanoparticles.
In: ACS Applied Polymer Materials. (12 October 2021) .
ISSN 2637-6105
DOI: https://doi.org/10.1021/acsapm.1c00990

Project information

Project title:
Project's official titleProject's id
SFB 1357 MikroplastikSFB1357

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

Nanoparticles (NPs) as part of engineered nanomaterials (ENMs) possess outstanding properties. Thus, they are more frequently integrated into various products resulting in high annual production quantities. The consequence can be the unintentional release into the environment where NPs could accumulate and pose a threat to human health. Therefore, the strong need becomes apparent for the remediation of environmental media. Electrospun nonwovens, which are defined here as membranes, could efficiently remove these released NPs. In this paper, electrospun membranes are utilized to flow filtration of metal and metal oxide NP, such as gold, silver, copper oxide, zinc oxide, iron oxide, and titanium dioxide. The membrane–NP interaction was analyzed and the correlation between NP size, NP ligand, ligand concentration, and the membrane surface functional group was investigated systematically. Finally, a membrane combining two functional groups was designed, which is able to adsorb up to 100% of the filtered NPs. The highest adsorption capacity was provided by AuNPs with 0.14 mg NP/mg membrane. To enhance their lifetime and gain sustainability, the membranes were then regenerated three times by rinsing with low concentrated acids. No significant efficiency loss was recorded, which allowed reusability of the electrospun membranes. We believe that the results shown here are of general relevance for other metals, metal oxides, and microplastic particles as well.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: electrospun membrane; affinity separation; ligands; metal nanoparticles; membrane regeneration
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Research Institutions > Collaborative Research Centers, Research Unit > SFB 1357 - MIKROPLASTIK
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 25 Oct 2021 07:43
Last Modified: 25 Oct 2021 07:43
URI: https://eref.uni-bayreuth.de/id/eprint/67452