In this study, nanofibers composed of ethyl cellulose (EC)/polyethylene oxide (PEO) impregnated with tea polyphenol (TP) were fabricated by the centrifugal spinning method. Subsequently, these nanofibers were incorporated into sodium alginate (SA) to generate porous composite pads with varying fiber contents. The porous composite pads were comprehensively characterized. The findings indicate that the nanofiber structure of the porous composite pads is maintained, the porosity of the porous composite pads ranges from 16 % to 28 %, the water vapor transfer rate decreases as the fiber addition increases, and the thermal stability improves. Additionally, the pads demonstrated enhanced slow-release characteristics, and the cumulative TP release reached 70 % to 81.44 % within 120 h. All the porous composite pads could effectively inhibit the growth of Staphylococcus aureus and Escherichia coli, and the inhibition rates of the two bacteria were 99.69 % and 99.54 % respectively, highlighting their potential application in active food packaging.
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http://dx.doi.org/10.1016/j.carbpol.2025.123430 | DOI Listing |
Chemosphere
March 2025
School of Nuclear Science and Technology, Lanzhou University, Lanzhou, 730000, China; Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou, 730000, China.
Clarifying the stability and co-transport of environmental colloids and radionuclides in porous media is crucial, as they pose potential risks to nuclear environmental safety. However, there is limited knowledge of the significant role of protein corona in Eu(III) transport carried by bentonite colloids (BC) in the presence of bovine serum albumin (BSA). The protein corona mediated the stability and co-transport behaviors of BC and Eu(III) in saturated quartz columns were investigated, and a ripening adsorption co-transport model (RACM) was established to qualitatively describe the Eu(III) transport by composited colloids.
View Article and Find Full Text PDFAnal Bioanal Chem
March 2025
Department of Chemistry, The Women University, Multan, Pakistan.
Monoliths are versatile materials with diverse applications, and their performance can be enhanced through modifications, including the use of metal-organic frameworks (MOFs). Modified monoliths improve separation and analytical processes in various fields, with different modification methods offering distinct benefits and challenges. Directly adding MOF crystals to the polymerization mixture is straightforward and time effective, but it often results in poor dispersion and compositional heterogeneity, which compromises consistency and reproducibility, particularly in bioanalytical applications.
View Article and Find Full Text PDFACS Appl Mater Interfaces
March 2025
Northwest Institute for Nonferrous Metal Research, Xi'an, Shannxi 710016, China.
Porous KTi(PO) nanoparticles are synthesized via a solvothermal method and subsequently modified with nitrogen-doped carbon layers by using polydopamine as the carbon source. The resultant KTi(PO)@N-doped carbon composite (KTP@NC) exhibits a preserved porous structure with abundant pores, facilitating ion diffusion and electrolyte infiltration. Various characterizations, including X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy, reveal the successful formation of an interconnected nitrogen-doped carbon network.
View Article and Find Full Text PDFNanomaterials (Basel)
February 2025
School of Chemical Engineering, Sichuan University, Chengdu 610065, China.
The primary extraction way for unconventional oil/gas resources is hydraulic fracturing to alter the reservoir for commercial production. However, hydraulic fracturing technology consumes a large amount of water, and the flowback water can easily be mixed with hydrocarbon substances to form emulsions. To achieve the recycling of water, it is necessary to develop an efficient continuous demulsification method for treating the flowback fluid.
View Article and Find Full Text PDFRSC Adv
March 2025
Department of Physics, College of Science, Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia
Urea-contaminated wastewater requires extensive energy for proper treatment before safe discharge to the surroundings. Direct urea fuel cells (DUFCs) could be utilized efficiently to treat urea-polluted water and generate electricity. The precious/expensive catalyst utilized at the electrodes is one of the main significant challenges to DUFC commercialization.
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