Electrospun Nanofibrous Membranes and Nanomaterials Derived from Electrospinning: From Fabrications to Applications

A special issue of Membranes (ISSN 2077-0375). This special issue belongs to the section "Membrane Applications".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 3038

Special Issue Editors

Department of Seawater Desalination, The Institute of Seawater Desalination & Multipurpose Utilization, MNR, Tianjin 300192, China
Interests: membrane-based separation materials and technologies; functional electrospun membranes and advanced oxidation
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Guest Editor
Department of Chemistry, Stony Brook University, Stony Brook, NY 11794-3400, USA
Interests: nanocelllose, carbon nanotubes and 2D nanosheets in nembrane technologies; adsorption and catalysis based water purification

Special Issue Information

Dear Colleagues,

Industrial wastewater treatment has become one of the hottest topics because of fast industrial development and the ever-increasing high restrictions on wastewater discharge. Moreover, industrial wastewater diversity brings a great challenge for conventional treating methods, especially when non-degradable organic pollutants are contained in the feed. The removal of such organic pollutants is a major concern in industrial wastewater treatment. Besides classical methods (e.g., Fenton chemistry), with the development of nanotechnology, many novel opportunities have arisen, including photo-catalysis, electro-catalysis, photo/electro-catalysis, etc. Thanks to their specific structures including a 3D interconnected web-like structure, high porosity, tunable pore size, etc., electrospun nanofibrous membranes (ENMs) could provide a high surface area and more sites for reactions. Thus, they exhibit great potential in the degradation of organic pollutants. Additionally, based on electrospinning, diverse nanomaterials with designed structures could be fabricated.

The current Special Issue of Membranes, which has an Impact Factor of 4.11, aims to seek state-of-the-art research progress, perspectives, and reviews in this field. It covers the fabrication of materials, performance studies, and theory investigation based on ENMs (both pristine and engineered/functionalized).

Dr. Guorong Xu
Dr. Rasel Das
Guest Editors

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Published Papers (1 paper)

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Research

20 pages, 2138 KiB  
Article
Nanofibrous Online Solid-Phase Extraction Coupled with Liquid Chromatography for the Determination of Neonicotinoid Pesticides in River Waters
by Ivana H. Šrámková, Burkhard Horstkotte, Laura Carbonell-Rozas, Jakub Erben, Jiří Chvojka, Francisco J. Lara, Ana M. García-Campaña and Dalibor Šatínský
Membranes 2022, 12(7), 648; https://doi.org/10.3390/membranes12070648 - 24 Jun 2022
Cited by 8 | Viewed by 2295
Abstract
Polymeric nano- and microfibers were tested as potential sorbents for the extraction of five neonicotinoids from natural waters. Nanofibrous mats were prepared from polycaprolactone, polyvinylidene fluoride, polystyrene, polyamide 6, polyacrylonitrile, and polyimide, as well as microfibers of polyethylene, a polycaprolactone nano- and microfiber [...] Read more.
Polymeric nano- and microfibers were tested as potential sorbents for the extraction of five neonicotinoids from natural waters. Nanofibrous mats were prepared from polycaprolactone, polyvinylidene fluoride, polystyrene, polyamide 6, polyacrylonitrile, and polyimide, as well as microfibers of polyethylene, a polycaprolactone nano- and microfiber conjugate, and polycaprolactone microfibers combined with polyvinylidene fluoride nanofibers. Polyimide nanofibers were selected as the most suitable sorbent for these analytes and the matrix. A Lab-In-Syringe system enabled automated preconcentration via online SPE of large sample volumes at low pressure with analyte separation by HPLC. Several mat layers were housed in a solvent filter holder integrated into the injection loop of an HPLC system. After loading 2 mL sample on the sorbent, the mobile phase eluted the retained analytes onto the chromatographic column. Extraction efficiencies of 68.8–83.4% were achieved. Large preconcentration factors ranging from 70 to 82 allowed reaching LOD and LOQ values of 0.4 to 1.7 and 1.2 to 5.5 µg·L−1, respectively. Analyte recoveries from spiked river waters ranged from 53.8% to 113.3% at the 5 µg·L−1 level and from 62.8% to 119.8% at the 20 µg·L−1 level. The developed methodology proved suitable for the determination of thiamethoxam, clothianidin, imidacloprid, and thiacloprid, whereas matrix peak overlapping inhibited quantification of acetamiprid. Full article
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