Exposing residual catalyst in a carbon nanotube sponge

RSC Advances ◽  
2016 ◽  
Vol 6 (51) ◽  
pp. 45103-45111 ◽  
Author(s):  
Liusi Yang ◽  
Yanbing Yang ◽  
Xiulan Zhao ◽  
Mingchu Zou ◽  
Shiting Wu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Porous Catalyst ◽  
Residual Catalyst ◽  
Potential Applications

Exposing residual catalyst in CNT sponges has potential applications as porous catalyst substrate and supercapacitor electrodes.

scholarly journals Fabrication of Flexible, Lightweight, Magnetic Mushroom Gills and Coral-Like MXene–Carbon Nanotube Nanocomposites for EMI Shielding Application

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 519 ◽  
Author(s):  
Kanthasamy Raagulan ◽  
Ramanaskanda Braveenth ◽  
Lee Ro Lee ◽  
Joonsik Lee ◽  
Bo Kim ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Photoelectron Spectroscopy ◽  
Electromagnetic Interference ◽  
Sodium Dodecyl ◽  
Spray Coating ◽  
Emi Shielding ◽  
X Ray ◽  
Good Thermal Stability ◽  
Potential Applications ◽  
Oxidized Carbon

MXenes, carbon nanotubes, and nanoparticles are attractive candidates for electromagnetic interference (EMI) shielding. The composites were prepared through a filtration technique and spray coating process. The functionalization of non-woven carbon fabric is an attractive strategy. The prepared composite was characterized using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), and Raman spectroscopy. The MXene-oxidized carbon nanotube-sodium dodecyl sulfate composite (MXCS) exhibited 50.5 dB (99.999%), and the whole nanoparticle-based composite blocked 99.99% of the electromagnetic radiation. The functionalization increased the shielding by 15.4%. The composite possessed good thermal stability, and the maximum electric conductivity achieved was 12.5 S·cm−1. Thus, the composite shows excellent potential applications towards the areas such as aeronautics, mobile phones, radars, and military.

Recent advances in hybrids of carbon nanotube network films and nanomaterials for their potential applications as transparent conducting films

Nanoscale ◽  
2011 ◽  
Vol 3 (4) ◽  
pp. 1361 ◽  
Author(s):  
Seung Bo Yang ◽  
Byung-Seon Kong ◽  
Dae-Hwan Jung ◽  
Youn-Kyoung Baek ◽  
Chang-Soo Han ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Transparent Conducting Films ◽  
Transparent Conducting ◽  
Recent Advances ◽  
Carbon Nanotube Network ◽  
Potential Applications

scholarly journals Vertically Aligned Carbon Nanotube Membranes: Water Purification and Beyond

Membranes ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 273
Author(s):  
Jeong Hoon Lee ◽  
Han-Shin Kim ◽  
Eun-Tae Yun ◽  
So-Young Ham ◽  
Jeong-Hoon Park ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Water Purification ◽  
Water Permeability ◽  
Proton Exchange Membrane ◽  
Antibacterial Properties ◽  
High Water ◽  
Proton Exchange ◽  
Conductive Membranes ◽  
Potential Applications ◽  
Vertically Aligned

Vertically aligned carbon nanotube (VACNT) membranes have attracted significant attention for water purification owing to their ultra-high water permeability and antibacterial properties. In this paper, we critically review the recent progresses in the synthesis of VACNT arrays and fabrication of VACNT membrane methods, with particular emphasis on improving water permeability and anti-biofouling properties. Furthermore, potential applications of VACNT membranes other than water purification (e.g., conductive membranes, electrodes in proton exchange membrane fuel cells, and solar electricity–water generators) have been introduced. Finally, future outlooks are provided to overcome the limitations of commercialization and desalination currently faced by VACNT membranes. This review will be useful to researchers in the broader scientific community as it discusses current and new trends regarding the development of VACNT membranes as well as their potential applications.

scholarly journals Highly Conductive Carbon Nanotube-Thermoplastic Polyurethane Nanocomposite for Smart Clothing Applications and Beyond

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1287 ◽  
Author(s):  
Sandra Lepak-Kuc ◽  
Bartłomiej Podsiadły ◽  
Andrzej Skalski ◽  
Daniel Janczak ◽  
Małgorzata Jakubowska ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotube ◽  
Thermoplastic Polyurethane ◽  
Polyurethane Elastomer ◽  
Light Weight ◽  
Composite Fibers ◽  
Smart Clothing ◽  
Potential Applications ◽  
Order Of Magnitude ◽  
Method Of Production

The following paper presents a simple, inexpensive and scalable method of production of carbon nanotube-polyurethane elastomer composite. The new method enables the formation of fibers with 40% w/w of nanotubes in a polymer. Thanks to the 8 times higher content of nanotubes than previously reported for such composites, over an order of magnitude higher electrical conductivity is also observed. The composite fibers are highly elastic and both their electrical and mechanical properties may be easily controlled by changing the nanotubes content in the composite. It is shown that these composite fibers may be easily integrated with traditional textiles by sewing or ironing. However, taking into account their light-weight, high conductivity, flexibility and easiness of molding it may be expected that their potential applications are not limited to the smart textiles industry.

Adsorption of Fluoride by Aligned Carbon Nanotubes Supported Ceria Nanoparticles

2007 ◽  
Vol 121-123 ◽  
pp. 1221-1224 ◽  
Author(s):  
Ze Chao Di ◽  
Yan Hui Li ◽  
Xian Jia Peng ◽  
Zhao Kun Luan ◽  
Ji Liang
Keyword(s):  
Heat Treatment ◽  
Carbon Nanotubes ◽  
Drinking Water ◽  
Carbon Nanotube ◽  
Fluoride Concentration ◽  
Ceria Nanoparticles ◽  
Adsorption Effect ◽  
Fluoride Adsorption ◽  
Aligned Carbon Nanotubes ◽  
Potential Applications

Ceria nanoparticles supported on aligned carbon nanotubes (CeO2/ACNTs), a novel adsorbent for fluoride from drinking water, were prepared by chemical reaction of CeCl3 with NaOH on aligned carbon nanotube solution and subsequent heat treatment. The best fluoride adsorption effect of CeO2/ACNTs occurs at pH 4.0 ~ 9.0. The largest adsorption capacity of CeO2/ACNTs reaches 33.7 mg g-1 at an equilibrium fluoride concentration of 18.0 mg l-1 at pH 7.0. The experiment results suggest that CeO2/ACNTs have great potential applications in environmental protection.

Synthesis of Unique Structures of Carbon Nanotube at Anodic Aluminum Oxide Template

2013 ◽  
Vol 421 ◽  
pp. 319-323
Author(s):  
Jafar Khan Kasi ◽  
Ajab Khan Kasi ◽  
Muzamil Bokhari ◽  
Nitin Afzulpurkar
Keyword(s):  
Carbon Nanotube ◽  
Aluminum Oxide ◽  
Anodic Aluminum Oxide ◽  
Iron Catalyst ◽  
Chemical Vapor ◽  
Anodic Aluminum Oxide Template ◽  
Multiwall Carbon Nanotube ◽  
Anodic Aluminum ◽  
Carbon Structures ◽  
Potential Applications

Carbon nanotube (CNT) is one of the most attractive nanomaterials which may be used in many potential applications of nanotechnology due to its excellent mechanical, electrical and thermal properties. We demonstrated the fabrication of carbon nanotube at the surface of anodic aluminum oxide (AAO) membrane by chemical vapor deposition (CVD) method. Acetylene was used as a hydrocarbon source and Fe as catalyst. CNT was synthesized at different temperature. The iron catalyst was confined in the holes of the AAO membrane. A variety of carbon structures such as nanotubes, helices, spiral, and hook-like curved shapes in the range of micrometer were synthesized. High graphitic multiwall carbon nanotube (MWCNT) was found at 700-750°C temperature.

Synthesis and Characterization of FePt Nanoparticle/Single Walled Carbon Nanotube Composites

2009 ◽  
Vol 620-622 ◽  
pp. 505-508 ◽  
Author(s):  
Yan Wang ◽  
Lian Gao ◽  
Jing Sun ◽  
Yang Qiao Liu
Keyword(s):  
Carbon Nanotube ◽  
Synthesis And Characterization ◽  
Fept Nanoparticles ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Nanotube Composites ◽  
Potential Applications ◽  
Carbon Nanotube Composites ◽  
20 Nm

We report the synthesis and characterization of FePt nanoparticles (NPs)/single walled carbon nanotube (SWNTs) nanocomposites, which might have important potential applications to orient CNTs and the development of new catalysts. The crystallite size of FePt NPs is about 2.5-4 nm and the Fe atom content ranges from 50% to 65%. HiPCO SWNTs have been decorated with FePt nanoparticles under mild conditions without any pretreatment. When the bundle size of HiPCO SWNTs is about 20 nm, FePt NPs mostly attach on the sidewalls of SWNTs. The loading of FePt nanoparticles on the SWNTs bundles can be conveniently controlled by adjusting the initial amount of FePt NPs. The nanocomposite showed magnetic properties in a magnetic field. TEM, HRTEM, and EDS spectra were performed to observe the nanostructure of these nanocomposites.

scholarly journals Carbon nanotube fibers with martensite and austenite Fe residual catalyst: room temperature ferromagnetism and implications for CVD growth

2017 ◽  
Vol 5 (22) ◽  
pp. 5544-5550 ◽  
Author(s):  
B. Alemán ◽  
R. Ranchal ◽  
V. Reguero ◽  
B. Mas ◽  
J. J. Vilatela
Keyword(s):  
Carbon Nanotube ◽  
Room Temperature ◽  
Room Temperature Ferromagnetism ◽  
Fe Catalyst ◽  
Residual Catalyst ◽  
Cvd Growth ◽  
Carbon Nanotube Fibers

We report on carbon nanotube fibers with stabilized room temperature ferromagnetic martensite and austenite residual Fe catalyst.

scholarly journals Carbon Nanotube Photophysics

MRS Bulletin ◽  
2004 ◽  
Vol 29 (4) ◽  
pp. 276-280 ◽  
Author(s):  
A. Jorio ◽  
R. Saito ◽  
T. Hertel ◽  
R.B. Weisman ◽  
G. Dresselhaus ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Optical Measurements ◽  
Future Research ◽  
Time Resolved ◽  
Van Hove Singularities ◽  
Charge Carrier Dynamics ◽  
Potential Applications ◽  
Photoluminescence Studies

AbstractIn single-walled carbon nanotubes (SWNTs), their electronic and vibrational structure as well as their charge-carrier dynamics are crucial for potential ultrasmall optical device applications. SWNT properties have now been obtained from optical absorption and time-resolved photoemission and, at the single-nanotube level, by resonance Raman scattering and photoluminescence studies. This article presents an overview of SWNT photophysics, discussing important findings for the characterization of carbon nanotube properties and directions for future research and potential applications. The unique optical properties observed in SWNTs are due to the one-dimensional confinement of electronic states, resulting in van Hove singularities in the nanotube density of states. Optical measurements of phonons, charge-carrier dynamics, and the electronic transition energy van Hove singularities are discussed.

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