Article
Materials Science, Paper & Wood
Thomas Bayer, Benjamin Vaughan Cunning, Bretislav Smid, Roman Selyanchyn, Shigenori Fujikawa, Kazunari Sasaki, Stephen Matthew Lyth
Summary: Nanocellulose, after sulfonation, shows enhanced conductivity and is promising for fuel cell applications. Spray-coated cellulose membranes exhibit high current density and power density in fuel cells.
Article
Chemistry, Multidisciplinary
Sahil Verma, Moolchand Sharma, Rahul Vaish
Summary: PVDF + WS2 fibers were fabricated via electrospinning to explore the effect of structure on catalytic activity. The composite material showed superior piezocatalytic and photocatalytic properties, attributed to increased spontaneous polarisation caused by ferroelectric PVDF contact. The composite membrane effectively degraded dyes and bacteria under low-frequency vibrations, providing insights into the role of phase structures in catalytic performance and a strategy for developing environmentally friendly catalysts.
ENVIRONMENTAL SCIENCE-NANO
(2022)
Article
Polymer Science
Geng Cheng, Zhen Li, Shan Ren, Dongmei Han, Min Xiao, Shuanjin Wang, Yuezhong Meng
Summary: The study focused on a novel SPFEK composite membrane with excellent mechanical properties and antioxidant stability in a hydrated state, suitable for direct methanol fuel cells. The performance of the composite membrane was thoroughly evaluated, demonstrating its potential applications in fuel cell technology.
Article
Chemistry, Physical
Martin Kormunda, Petr Rysanek, Ondrej Kylian, Monika Benkocka, Pavla Capkova
Summary: Electrospun nanofiber membranes for filtration and medical applications are still rapidly developing, with the transformation of hydrophilic membranes to hydrophobic membranes. After plasma coating with CF film, the contact angle of the membrane increased, while the fiber diameter remained unchanged.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Meng Cui, Tianyuan Hou, Junye Tong, Yi Xin, Xiaohua Zhou, Wei Liang
Summary: By improving the material composition and structural design, researchers have successfully developed flexible piezoelectric tactile sensors with excellent stability and high sensitivity. These sensors demonstrate superior performance in recognizing surface texture and temperature, and have a wide range of potential applications.
IEEE SENSORS JOURNAL
(2022)
Article
Engineering, Environmental
Xiaobo Hu, Yanqiao Xu, Jiancheng Wang, Jiaxin Ma, Lianjun Wang, Wan Jiang
Summary: CsPbX3 perovskite nanocrystals (NCs) have excellent optoelectronic properties and are considered as promising candidates for fluorescence sensors. However, their poor stability hinders their practical applications in aqueous fluorescent detection. In this study, CsPbX3 NCs were in-situ encapsulated into PVDF-HFP/PS polymer nanofibers using electrospinning, and the water stability of the nanofiber membranes was significantly improved by introducing the hydrophobic additive PFDTMS. The fabricated nanofibers exhibited outstanding optical properties, high hydrophobicity, and achieved efficient detection of organic dyes in aqueous solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Shubo Wang, Yuan Lin, Jian Yang, Lei Shi, Guang Yang, Xupin Zhuang, Zhenhuan Li
Summary: Composite PEMs with blend nanofibers of cellulose and UiO-66-NH2 embedded in sulfonated polysulfone matrix show high proton conductivity, low methanol permeability, and low swelling ratio. They have great potential for use as proton-conducting nanofillers in fuel cell PEMs.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Polymer Science
Ravi Bhushan Pathak, Piyush Kumar, Anand Prakash Mishra, Vijay Verma
Summary: This study successfully fabricated a cost-efficient nanocomposite proton exchange membrane by incorporating fly ash nanoparticles into a poly(vinylidene fluoride) polymer matrix. The resulting membrane showed excellent ion exchange capacity and proton conductivity, as well as improved water uptake capacity. Moreover, the membrane exhibited high selectivity, making it a potential alternative to expensive Nafion-117 for DMFC applications.
JOURNAL OF POLYMER RESEARCH
(2023)
Article
Polymer Science
Abdulaziz K. Assaifan, Muhammed Omer Aijaz, Monis Luqman, Q. A. Drmosh, Mohammed R. Karim, Hamad F. Alharbi
Summary: Electrospun nanofiber membranes have been widely used as heavy metal ion adsorbents, but are usually mechanically weak. Core-shell nanofiber membranes were produced by coaxial electrospinning of PVDF nanofibers as core nanofibers for mechanical support, and ZnO nanoparticles loaded PAN as shell nanofibers to enhance adsorption of cadmium ions, leading to a significant enhancement in adsorption capacity. Experimental results were better fitted with the pseudo-second-order kinetic model and Langmuir isotherm equation.
Article
Materials Science, Textiles
Bilal Zaarour, Wanjun Liu
Summary: This study reports the generation and characterization of electrospun polyvinylidene fluoride (PVDF) nanofiber webs obtained from different solvents, which will be used as active layers for piezoelectric nanogenerator (PENG). It was found that PENG based on fibers electrospun using DMF has the highest electrical outputs, while the lowest outputs were for PENG based on fibers electrospun using ACE. The work can serve as a good reference for investigating the effect of solvent systems on fiber diameters, crystalline phases, and piezoelectric properties.
JOURNAL OF ENGINEERED FIBERS AND FABRICS
(2022)
Article
Chemistry, Multidisciplinary
Zongfan Yang, Pei Chen, Wenjing Hao, Zhen Xie, Yu Feng, Guolong Xing, Long Chen
Summary: This work presents a strategy for exploring proton-conducting frameworks by engineering pore walls and installing proton-containing polymers into the pores. The synthesis of amide-linked and sulfonated frameworks with high crystallinity and channel ordering greatly increases proton conductivity, enabling a stable continuous run. These results suggest a way to explore proton-conducting COFs via systematic engineering of the wall and space of the open nanochannels.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Polymer Science
Ahmed Abutaleb
Summary: Non-noble CuxNi1-x (x = 0, 0.1, 0,2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1) alloy nanoparticles supported on PVDF-HFP nanofibers were successfully fabricated through electrospinning and in situ reduction. The catalysts exhibited the formation of bimetallic NiCu alloy supported on PVDF-HFP and showed better catalytic activity for SBH hydrolysis compared to monometallic counterparts. The Cu-0.7 Ni-0.3/PVDF-HFP catalyst demonstrated the best catalytic performance with low activation energy and satisfying stability.
Article
Biochemistry & Molecular Biology
Parinaz Nezhad-Mokhtari, Fahimeh Kazeminava, Bahman Abdollahi, Pourya Gholizadeh, Abolfazl Heydari, Faranak Elmi, Mahmoud Abbaszadeh, Hossein Samadi Kafil
Summary: Recently, researchers have developed antibacterial wound dressings based on biomaterials that have shown good biocompatibility and the potential to accelerate wound healing. In this study, eco-friendly and biodegradable nanofibers were prepared by incorporating zeolite imidazolate framework nanoparticles and chamomile essential oil into a chitosan/ poly (& epsilon;-caprolactone) matrix using the electrospinning technique. The fabricated nanofibers demonstrated excellent cytocompatibility, proliferation, and antibacterial activity against common wound pathogens.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Yuxin Wang, Haijun Wang, Kun Liu, Tong Wang, Chunlei Yuan, Haibo Yang
Summary: The piezoelectric nanosensors were prepared using a novel type of dehydrofluorinated poly(vinylidene fluoride) (PVDF) nanofibrous membrane, resulting in improved piezoelectric and energy storage properties. The introduction of conjugated double bonds to the PVDF backbone led to decreased molecular weight, solution viscosity, and hydrophobicity. The energy storage efficiency of the dehydrofluorinated PVDF nanofiber membranes depended significantly on the degree of HF elimination during the dehydrofluorination process.
Article
Polymer Science
Cataldo Simari, Isabella Nicotera, Antonino Salvatore Arico, Vincenzo Baglio, Francesco Lufrano
Summary: This study investigates the methanol transport properties of composite membranes to reduce methanol crossover in DMFCs, improving the performance and making it a viable option for high-energy DMFCs.