The purpose of this work is to enhance the proton conductivity and fuel cell performance of sulfonated poly(phthalazinone ether ketone) (SPPEK) as a proton exchange membrane through the application of SrTiO perovskite nanoparticles. Nanocomposite membranes based on SPPEK and SrTiO perovskite nanoparticles were prepared a casting method. The highest proton conductivity of nanocomposite membranes obtained was 120 mS cm at 90 °C and 95% RH. These enhancements could be related to the hygroscopic structure of SrTiO perovskite nanoparticles and the formation of hydrogen bonds between nanoparticles and water molecules. The satisfactory power density, 0.41 W cm at 0.5 V and 85 °C, of the nanocomposite membrane (5 wt% content of nanoparticles) confirms their potential for application in the PEM fuel cells.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9048704 | PMC |
| http://dx.doi.org/10.1039/c9ra08893h | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Tuning of Water Vapor Permeability in 2D Nanocarbon-Based Polypropylene Composite Membranes.
Nanomaterials (Basel)
December 2024
Foundation for Research and Technology-Hellas (FORTH), Institute of Chemical Engineering Sciences (ICE-HT), Stadiou Str., GR-265 04 Rio-Patras, Greece.
This work focuses on the incorporation of 2D carbon nanomaterials, such as graphene oxide (GO), reduced graphene oxide (rGO) and graphene nanoplatelets (GNPs), into polypropylene (PP) via melt mixing. The addition of these 2D carbon nanostructured networks offers a novel approach to enhancing/controlling the water vapor permeable capabilities of PP composite membranes, widely used in industrial applications, such as technical (building roof membranes) or medical (surgical gowns) textiles. The study investigates how the dispersion and concentration of these graphene nanomaterials within the PP matrix influence the microstructure and water vapor permeability (WVP) performance.
View Article and Find Full Text PDFLight-activated nanocomposite thin sheet for high throughput contactless biomolecular delivery into hard-to-transfect cells.
Analyst
January 2025
Department of Engineering Design, Indian Institute of Technology Madras, India.
High throughput intracellular delivery of biological macromolecules is crucial for cell engineering, gene expression, therapeutics, diagnostics, and clinical studies; however, most existing techniques are either contact-based or have throughput limitations. Herein, we report a light-activated, contactless, high throughput photoporation method for highly efficient and viable cell transfection of more than a million cells within a minute. We fabricated reduced graphene oxide (rGO) nanoflakes that was mixed with a polydimethylsiloxane (PDMS) nanocomposite thin sheet with an area of 3 cm and a thickness of ∼600 μm.
View Article and Find Full Text PDFEffect of Promising Sustainable Nano-Reinforcements on Polysulfone/Polyvinylpyrrolidone-Based Membranes: Enhancing Mechanical Properties and Water Filtration Performance.
Polymers (Basel)
December 2024
Department of Environmental Engineering, Istanbul University-Cerrahpaşa, Avcilar, Istanbul 34320, Turkey.
In this study, polysulfone/polyvinylpyrrolidone (PSf/PVP, 20 wt%/5 wt%)-based ultrafiltration (UF) membranes reinforced with different ratios (0.5 and 1 wt%) of cellulose nanocrystals (CNCs) and cellulose nanofibres (CNFs) were prepared by the phase inversion method. The effect of CNC, CNF, and CNC-CNF reinforcement on the morphology, roughness, crystallinity, porosity, average pore size, mechanical properties, and filtration performance of PSf/PVP-based membrane was investigated.
View Article and Find Full Text PDFNanocomposites Based on Iron Oxide and Carbonaceous Nanoparticles: From Synthesis to Their Biomedical Applications.
Materials (Basel)
December 2024
National Institute of Materials Physics, Atomistilor Street, No 405 A, 077125 Magurele, Romania.
Nanocomposites based on FeO and carbonaceous nanoparticles (CNPs), including carbon nanotubes (CNTs) and graphene derivatives (graphene oxide (GO) and reduced graphene oxide (RGO)), such as FeO@GO, FeO@RGO, and FeO@CNT, have demonstrated considerable potential in a number of health applications, including tissue regeneration and innovative cancer treatments such as hyperthermia (HT). This is due to their ability to transport drugs and generate localized heat under the influence of an alternating magnetic field on FeO. Despite the promising potential of CNTs and graphene derivatives as drug delivery systems, their use in biological applications is hindered by challenges related to dispersion in physiological media and particle agglomeration.
View Article and Find Full Text PDFFabrication of promising competitive graphene nanocomposite transducer to determine Prucalopride succinate in pharmaceutical formulation and in spiked human biological fluids.
BMC Chem
January 2025
Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
The development of a newly fabricated ion-selective electrode (ISE) solid-contacted type for the determination of prucalopride succinate represents a significant advancement in analytical chemistry, particularly in the context of green chemistry principles. The optimization process involved numerous trials to ensure the selection of a cation exchanger and ionophore that offer high sensitivity and selectivity for prucalopride succinate. Through these optimization trials, sodium tetrakis was identified as the most suitable cation exchanger, while calix [8] arene demonstrated the highest affinity towards prucalopride succinate as the ionophore.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!