نتایج جستجو برای: graphitized nanofibers

تعداد نتایج: 7482  

2017
Jin Zhang Yibing Cai Xuebin Hou Xiaofei Song Pengfei Lv Huimin Zhou Qufu Wei

Titanium dioxide (TiO2) nanofibers have been widely applied in various fields including photocatalysis, energy storage and solar cells due to the advantages of low cost, high abundance and nontoxicity. However, the low conductivity of ions and bulk electrons hinder its rapid development in lithium-ion batteries (LIB). In order to improve the electrochemical performances of TiO2 nanomaterials as...

Journal: :Molecular pharmaceutics 2013
S Khansari S Duzyer S Sinha-Ray A Hockenberger A L Yarin B Pourdeyhimi

In the present work, a systematic study of the release kinetics of two embedded model drugs (one completely water soluble and one partially water soluble) from hydrophilic and hydrophobic nanofiber mats was conducted. Fluorescent dye Rhodamine B was used as a model hydrophilic drug in controlled release experiments after it was encapsulated in solution-blown soy-protein-containing hydrophilic n...

Journal: :journal of nanostructures 2012
h. a. khorami m. keyanpour-rad a. eghbali m. r. vaezi

this paper reports the synthesis of polypyrrole coated sno2/znoelectrospunnanofibers via vapor phase polymerization method. in order to prepare one dimensional (sno2-zno)/polypyrrole with the core sheath structure, first sno2-zno composite nanofibers were synthesized via electrospinning method followed by adsorption of fe3+ on the surface of the sno2-zno nanofibers and finally pyrrole was polym...

E. Biazar, F. Ghorbani J. Ai S. Heidari K

Tissue engineering is defined as the designing and engineering of structures to rebuild and repair a body damaged tissue. Scaffolding Poly Hydroxy Butyrate Valraty (PHBV) has shown good biocompatibility and biodegradable properties. Nanofibers have improved the performance of biomaterials, and could be considered effective. One of the important methods for designing nanofiber scaffold is the el...

Journal: :Chemical communications 2015
LianSheng Jiao Tongshun Wu HongYan Li Fenghua Li Li Niu

High quality graphitized graphene has been successfully synthesized by solid-exfoliation of graphite and a subsequent wet chemical process. The as-obtained graphene exhibits charge-discharge behaviour quite different from that of reduced graphene oxide and shows enhanced cycling and rate performance compared with commercial mesocarbon microbeads (MCMBs) for lithium ion batteries.

1999
A. Bezryadin R. M. Westervelt M. Tinkham

We report a technique which allows self-assembly of conducting nanoparticles into long continuous chains. Transport properties of such chains have been studied at low temperatures. At low bias voltages, the charges are pinned and the chain resistance is exponentially high. Above a certain threshold VT , the system enters a conducting state. The threshold voltage is much bigger than the Coulomb ...

Journal: :Nanoscale 2012
Asli Celebioglu Tamer Uyar

High molecular weight polymers and high polymer concentrations are desirable for the electrospinning of nanofibers since polymer chain entanglements and overlapping are important for uniform fiber formation. Hence, the electrospinning of nanofibers from non-polymeric systems such as cyclodextrins (CDs) is quite a challenge since CDs are cyclic oligosaccharides. Nevertheless, in this study, we h...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Jeffrey D Hartgerink Elia Beniash Samuel I Stupp

Twelve derivatives of peptide-amphiphile molecules, designed to self-assemble into nanofibers, are described. The scope of amino acid selection and alkyl tail modification in the peptide-amphiphile molecules are investigated, yielding nanofibers varying in morphology, surface chemistry, and potential bioactivity. The results demonstrate the chemically versatile nature of this supramolecular sys...

2014
Thomas J. Macdonald Jie Xu Sait Elmas Yatin J. Mange William M. Skinner Haolan Xu Thomas Nann

p-type NiO nanofibers have been synthesized from a simple electrospinning and sintering procedure. For the first time, p-type nanofibers have been electrospun onto a conductive fluorine doped tin oxide (FTO) surface. The properties of the NiO nanofibers have been directly compared to that of bulk NiO nanopowder. We have observed a p-type photocurrent for a NiO photocathode fabricated on an FTO ...

Journal: :Chemical communications 2011
Kun-Jae Lee Hanbok Song Young-In Lee Hyunsung Jung Miluo Zhang Yong-Ho Choa Nosang V Myung

Electrospinning and galvanic displacement reaction are combined to fabricate ultra-long hollow chalcogen and chalcogenide nanofibers in a cost-effective and high throughput manner. This procedure exploits electrospinning to fabricate ultra-long sacrificial nanofibers with controlled dimensions and morphology, thereby imparting control over the composition and shape of the nanostructures evolved...

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