نتایج جستجو برای: carbon nanofibers

تعداد نتایج: 286853  

Journal: :Nanoscale 2011
Peng Zhang Changlu Shao Zhenyi Zhang Mingyi Zhang Jingbo Mu Zengcai Guo Yichun Liu

TiO(2)@carbon core/shell nanofibers (TiO(2)@C NFs) with different thinkness of carbon layers (from 2 to 8 nm) were fabricated by combining the electrospinning technique and hydrothermal method. The results showed that a uniform graphite carbon layer was formed around the electrospun TiO(2) nanofiber via C-O-Ti bonds. By adjusting the hydrothermal fabrication parameters, the thickness of carbon ...

Journal: :physical chemistry and electrochemistry 0

polypyrrole (ppy) nanofibers have been fabricated on glassy carbon electrode (gce) usingelectrochemical technique. electropolymerization of pyrrole (py) for the fabrication of ppy nanofiberswas occurred on gce by applying a fixed potential of about 0.85 v for 120 sec in a mild basic solutioncontaining sodium carbonate and sodium perchlorate. in the mild basic media, the monomer, py, isoxidized ...

Farhang Dehghan, Somayeh , Golbabaei, Farideh , Mohammadi, Hamzeh , Sedigh Zadeh, Asghar ,

Introduction: Despite nanofibers have attracted great interests for filtering particulate matters from the air stream, fewer studies have been done on the feasibility of their use in the removal of gas pollutants, while the both pollutants are present in the most workplaces. Toluene is a toxic and mutagenic substance, and chronic exposure to its low levels can lead to a wide range of adverse he...

2015
Zafar Khan Ghouri Nasser A. M. Barakat Hak Yong Kim

In this study, CoCu alloy nanoparticles-incorporated carbon nanofibers are introduced as effective non precious electrocatalyst for methanol oxidation in alkaline medium. The introduced electrocatalyst has been synthesized by simple and effective process; electrospinning. Typically, calcination, in nitrogen atmosphere, of electrospun nanofibers composed of cobalt acetate, copper acetate and pol...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2006
Manjeet S Dhindsa Neil R Smith Jason Heikenfeld Philip D Rack Jason D Fowlkes Mitchel J Doktycz Anatoli V Melechko Michael L Simpson

Reversible electrostatically induced wetting (electrowetting) of vertically aligned superhydrophobic carbon nanofibers has been investigated. Carbon nanofibers on a 5 x 5 microm pitch were grown on Si substrates, electrically insulated with a conformal dielectric, and hydrophobized with fluoropolymer. This nanostructured scaffold exhibited superhydrophobic behavior for saline (theta approximate...

2017
Jiji Swaminathan Kadirvelu Krishna Deepika Rajendran

Recently, carbon nanofibers have gained immense attention in research due to its tremendous application. Here, this work highlights a simple, cost effective and reliable method to develop carbon nanofibers (CNF) from biomass. The biomass used is bacterial cellulose (BC) synthesiSed using Acetobacter xylinus. CNF was developed by freeze drying of BC followed by pyrolysis at different temperature...

Journal: :international journal of advanced structural engineering 2011
sivakumar m v n

semiconducting carbon nanofibers (cnf) are prepared from three different sources, i.e., acetylene, ethanol, and cotton by the chemical vapor deposition (cvd) process. these fibers are having rich elastic, engineering and conductivity properties. fresh self-compacting concrete (scc) flows into place and around obstructions under its own weight to fill the formwork completely and self-compact, wi...

2009
W. Xia H. Bitter D. S. Su M. Muhler

Vapor grown carbon fibers (VGCFs) with diameters of several microns were synthesized and investigated by high resolution transmission electron microscopy. It was found that the shell of the VGCFs consisted of densely-packed domains embedded in loosely-packed matrix, and both were highly amorphous. Regular edge planes as observed on the surface of fishbone nanofibers do not exist on VGCFs. Hence...

Journal: :Nano letters 2007
Zhe Yu Timothy E McKnight M Nance Ericson Anatoli V Melechko Michael L Simpson Barclay Morrison

Vertically aligned carbon nanofiber (VACNF) electrode arrays were tested for their potential application in recording neuro-electrophysiological activity. We report, for the first time, stimulation and extracellular recording of spontaneous and evoked neuroelectrical activity in organotypic hippocampal slice cultures with ultramicroelectrode VACNF arrays. Because the electrodes are carbon-based...

2017
Idelma A A Terra Luiza A Mercante Rafaela S Andre Daniel S Correa

The accumulation of heavy metals in the human body and/or in the environment can be highly deleterious for mankind, and currently, considerable efforts have been made to develop reliable and sensitive techniques for their detection. Among the detection methods, chemical sensors appear as a promising technology, with emphasis on systems employing optically active nanofibers. Such nanofibers can ...

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