نتایج جستجو برای: cnfs

تعداد نتایج: 562  

2010
D. Sebastián I. Suelves R. Moliner M. J. Lázaro

The catalytic layers of a low temperature fuel cell must present a sufficient electronic conductivity for a high overall performance and, in this sense, the electrocatalyst support plays an important role. However, regarding carbon nanofibers as support, it is necessary to chemically treat their surface to improve both metal deposition and anchorage, which unfortunately affects negatively the e...

Journal: :ACS nano 2013
Dimitry Papkov Allison M Beese Alexander Goponenko Yan Zou Mohammad Naraghi Horacio D Espinosa Biswajit Saha George C Schatz Alexander Moravsky Raouf Loutfy Sonbinh T Nguyen Yuris Dzenis

Carbon nanotubes are being widely studied as a reinforcing element in high-performance composites and fibers at high volume fractions. However, problems with nanotube processing, alignment, and non-optimal stress transfer between the nanotubes and surrounding matrix have so far prevented full utilization of their superb mechanical properties in composites. Here, we present an alternative use of...

Journal: :Cellulose 2022

Emulsified solid particles adsorbed at the oil–water interface can stabilise Pickering emulsions by acting as a physical barrier to coalescence of oil droplets. Cellulose nanofibres (CNFs) have been used in food-grade because their excellent performance low cost and sustainable material. Nicotinamide mononucleotide (NMN) is small-molecule zwitterion with polar functionality capable interacting ...

Journal: :Waste and Biomass Valorization 2021

In this study, the characteristics of jute fibers and cellulose nanofibrils (CNFs) their impacts on mechanical strength were compared, particularly from standpoint application as reinforcement in extruded fiber–cement composites. Raw subjected to an alkaline treatment before being fibrillated into CNFs. The composites produced with (0.5% 2%) CNFs via extrusion process. Both percentages based ce...

Journal: :Advanced energy and sustainability research 2023

Cellulose nanofibers (CNFs) prepared via 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation of the C6 primary hydroxyls native cellulose to carboxylates are used as pseudocatalysts for enhancing aluminum powder/pure water reactions. The Al reaction is a stepwise reaction. It starts from hydration outmost Al2O3 thin layer and then inner metallic with water. At lower temperatures (<5...

Journal: :Microporous and Mesoporous Materials 2021

The Ni/SiO2 system is one of the most interesting to produce COx-free H2 and valuable carbon nanofibers (CNFs) by catalytic decomposition CH4. SiO2 effective support while Ni catalyst displays long life high activity. We studied chemical vapor deposition (CCVD) process CH4 within Ni/glass at relatively low temperature (600 °C) during times (3 h), varying amount (2.3–17.8% Ni(%)) source (100:200...

Journal: :Materials Science Poland 2022

Abstract In this paper, we successfully synthesized heterojunction manganese titanate/titanate nanoparticles (MnTiO 3 –TiO 2 NPs)-decorated carbon nanofibers (CNFs) employing the electrospinning process. The morphology, crystallinity, and chemical composition of MnTiO /TiO -decorated CNFs is characterized via SEM, FESEM, STEM, TEM EDX, XRD techniques. nanocomposite exhibits good performance for...

Journal: :Sustainable Environment Research 2022

Abstract CdIn 2 S 4 (CIS) has attracted widespread attention due to its structural stability and photoelectric properties, however, it is difficult recycle when after usage. Carbon nanofibers (CNFs) as a suitable electron acceptor stable physicochemical properties enhanced the mechanical easily recycle. There are also few reports on applying CIS/CNFs composite photocatalyst in removing volatile...

Journal: :International Conference on Computational & Experimental Engineering and Sciences online version 2023

Cellulose nanofibrils (CNFs) and the continuously assembled microfibers have shown transversely isotropic behavior in many studies. Due to fact that size of CNFs is at nano micro scale, respectively, characterization their mechanical properties extremely challenge. That greatly hinders accurate multi-scale modeling design CNFs-based materials. In our study, we characterized elastic constants bo...

Journal: :Energies 2021

Cellulose nanofibers (CNFs) and their applications have recently gained significant attention due to the attractive unique combination of properties including excellent mechanical properties, surface chemistry, biocompatibility, most importantly, abundance from sustainable renewable resources. Although there are some commercial production plants, mostly in developed countries, optimum CNF is st...

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