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Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite
Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 3 18-27 (10 pages)
to the tubes with higher L/D, and it is possible to see the binding energies of the emission peaks of the C at 284.47 eV, O at 532.06 eV and N at 399.93 eV. There are no signifcant changes in the surfaces of the tubes that were surface treated [10, 15, 16]. The oxygen con- tent of 1.69% to 4.52% indicates there was an increase in the number of groups with oxygen content on the surface of the... Multiwall carbon nanotubes (MWCNT) with two different (L/D) aspect ratios (7±2 μm/140±30 nm and 0.5?2 μm/8?15 nm) were surface treated using nitric acid (HNO3) and polyethyleneimine (PEI) prior to their deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT... -
Preparation of gold nanoparticle/single-walled carbon nanotube nanohybrids using biologically programmed peptide for application of flexible transparent conducting films
MinHo Yang, Bong Gill Choi 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2016, Vol.20 4 26-31 (6 pages)
to two tubes by wrapping tubes. Non-covalent π-π interaction between the SWNTs and peptides led to advantages in terms of maintaining the chemical structures, enhancing the electronic properties of the nanotubes, and inducing effective dispersion of the nanotubes [24]. The well-designed p-SWNTs provided nanoscale building blocks for the nucleation and growth of Au NPs, yielding AuNP/p-SWNT... In this study, we report a general method for preparation of a one-dimensional (1D) arrangement of Au nanoparticles on single-walled carbon nanotubes (SWNTs) using biologically programmed peptides as structure-guiding 1D templates. The peptides were designed by the combination of glutamic acid (E), glycine (G), and phenylalanine (F) amino acids; peptides efficiently debundled and exfoliated the SWNTs for stability of the dispersion and guided the growth of the array of Au nanoparticles in a... -
One-step synthesis of dual-transition metal substitution on ionic liquid based N-doped mesoporous carbon for oxygen reduction reaction
Ulziidelger Byambasuren, Yukwon Jeon, Dorjgotov Altansukh, Yunseong Ji, Yong-Gun Shul 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2016, Vol.17 No.1 8 53-64 (12 pages)
oxidation resistance under strong oxidizing condition can be one of the ideal alternatives for PEMFC catalysts [3]. Especially, nitrogen (N) doped carbons such as N-doped bulk carbon, carbon nano- tubes, and micro and mesoporous carbon materials have been recognized as a promis- DOI: http://dx.doi.org/ DOI:10.5714/CL.2016.17.1.053 This is an Open Access article distributed under the terms of t... Nitrogen (N)-doped ordered mesoporous carbons (OMCs) with a dual transition metal system were synthesized as non-Pt catalysts for the ORR. The highly nitrogen doped OMCs were prepared by the precursor of ionic liquid (3-methyl-1-butylpyridine dicyanamide) for N/C species and a mesoporous silica template for the physical structure. Mostly, N-doped carbons are promoted by a single transition metal to improve catalytic activity for ORR in PEMFCs. In this study, our N-doped mesoporous carbons were... -
Carbon-allotropes: synthesis methods, applications and future perspectives
P. S. Karthik, A. L. Himaja and Surya Prakash Singh 한국탄소학회 Carbon Letters 19 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.4 1 219-237 (19 pages)
with permission from [45]. ..PAGE:6 Carbon Letters Vol. 15, No. 4, 219-237 (2014) DOI: http://dx.doi.org/10.5714/CL.2014.15.4.219 224 of such CSCNTs were 0.44 eV [34]. The synthesis of CNTs or bucky tubes is being carried out on a large scale and by various techniques. Here is a report on CNTs synthesis techniques which are being carried out currently. 2.2.1. Using methane SWCNTs and MWCNTs ar... The element carbon has been used as a source of energy for the past few hundred years, and now in this era of technology, carbon has played a significant and very prominent role in almost all fields of science and technology. So as an honour to this marvellous element, we humans should know about its various forms of existence. In this review article, we shed light on all possible carbon-allotropes; similarities in their synthesis techniques and the starting materials; their wide range of... -
Double-walled carbon nanotubes: synthesis, structural characterization, and application
Yoong Ahm Kim, Kap-Seung Yang, Hiroyuki Muramatsu, Takuya Hayashi, Morinobu Endo, Mauricio Terrones, Mildred S. Dresselhaus 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2014, Vol.15 No.2 4 77-88 (12 pages)
of the outer tubes in DWCNTs, the inner tubes exhibit exciting transport and optical properties that lend them promise in the fabrication of feld-effect transistors, stable feld emitters, and lithium ion batteries. In addition, by utilizing the outer tube chemistry, DWCNTs can be useful for anchoring semiconducting quantum dots and also as effective multifunctional fllers in producing tough,... DWCNTs, the inner tubes exhibit exciting transport and optical properties that lend them promise in the fabrication of field-effect transistors, stable field emitters, and lithium ion batteries. In addition, by utilizing the outer tube chemistry, DWCNTs can be useful for anchoring semiconducting quantum dots and also as effective multifunctional fillers in producing tough, conductive transparent polymer films. The inner tubes meanwhile preserve their excitonic transitions. This article reviews... -
Effect of few-walled carbon nanotube crystallinity on electron field emission property
HaeDeukJeong, JongHyeokLee, ByungGapLee, HeeJinJeong, Geon-WoongLee, DaeSukBang, DonghwanCho, Young-BinPark 한국탄소학회 Carbon Letters 11 Pages
한국탄소학회 Carbon Letters 2011, Vol.12 No.4 3 207-217 (11 pages)
the UV-Vis region; individual nano- tubes show the opposite effect [22]. Therefore, dispersion of CNTs can be characterized using UV-Vis absorption spectros- copy. In this study, to characterize the dispersion of FWCNTs in DMF using UV-Vis spectroscopy, absorbance values were re- corded at 550nm, as reported in previous studies [23,24], which is shown in Fig. 4. According to the Beer-Lambert’s... -
Synthesis and characterization of carbon doped TiO₂ photocatalysts supported on stainless steel mesh by sol-gel method
JO. Tijani, OO. Fatoba, TC. Totito, WD. Roos, LF. Petrik 한국탄소학회 Carbon Letters 12 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 6 48-59 (12 pages)
2 nanoparticles-coated carbon nano- tubes. Nanoscale Res Lett, 5, 603 (2009). https://doi.org/10.1007/ s11671-009-9513-5. [35] Gupta K, Singh RP, Pandey A, Pandey A. Photocatalytic antibac- terial performance of TiO2 and Ag-doped TiO2 against S. aureus. P. aeruginosa and E. coli. Beilstein J Nanotechnol, 4, 345 (2013). https://doi.org/10.3762/bjnano.4.40. [36] Dong F, Guo S, Wang H, Li X, Wu Z.... This study synthesized pure anatase carbon doped TiO₂ photocatalysts supported on a stainless steel mesh using a sol-gel solution of 8% polyacrylonitrile (PAN)/dimethylformamide (DMF)/TiCl₄. The influence of the pyrolysis temperature and holding time on the morphological characteristics, particle sizes and surface area of the prepared catalyst was investigated. The prepared catalysts were characterized by several analytical methods: high resolution scanning electron microscopy (HRSEM), energy... -
The Action of Acetylcholine on the End-Plate Potential
Koh, Il-Sup 대한생리학회 대한생리학회지 8 Pages
대한생리학회 대한생리학회지 1975, 제 9권 제 2호 6 41-48 (8 pages)
one tenth of total volume, so that the cooling ,effect was small, at the end of the incubation :period the tubes were cooled in iced water for 1 min., and then ice cold 50% of trichlo- :roacetic acid was added to make the final concentration in 5%. The tubes were kept in .i.ced water untill it was convenient to spin 135 down the precipitated protein and estimate the inorganic phosphate in... The failure of the action potential at the end-plate membrane to reach the sodium equilibrium potential is due to the stimulating action of acetylcholine on Na+-K+ pump. This action of acetylcholine causes an enormous increase in the K+ transport rate. The quantitative amount of potassium ions in the inside of the end-plate membrane prevented the permeability of sodium ions during the depolarization phase of the action potential. It would favor the changes in the shape of action potential by... -
A review: controlled synthesis of vertically aligned carbon nanotubes
MyungGwanHahm, DanielP.Hashim, RobertVajtai, PulickelM.Ajayan 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2011, Vol.12 No.4 1 185-193 (9 pages)
the high density nucleation of nanotube self-alignment typically involves van der Waals interac- tions between CNTs. CNTs interact with their neighboring tubes via van der Waals forces to gain rigidity, and that allows the nano- tubes to self-align and grow perpendicular to the substrate surface. To synthesize vertically aligned MWCNTs and SWCNTs, various CVD techniques have been developed. In...