The effect of Cu loading on Ni/carbon nanotubes catalysts for hydrodeoxygenation of guaiacol

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26658-26667 ◽  
Author(s):  
A. B. Dongil ◽  
B. Bachiller-Baeza ◽  
I. Rodríguez-Ramos ◽  
J. L. G. Fierro ◽  
N. Escalona
Keyword(s):  
Carbon Nanotubes ◽  
Commercial Carbon

Commercial carbon nanotubes (CNT), were used as supports to prepare Ni/CNT catalysts with a 15 wt% Ni loading and NiCux/CNT catalysts with Cu loadings of x: 1.5, 2.25, 3.0 and 3.75 wt% were prepared.

scholarly journals Non-purified commercial multiwalled carbon nanotubes supported on electrospun polyacrylonitrile@polypyrrole nanofibers as photocatalysts for water decontamination

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9911-9920
Author(s):  
Gabriele Capilli ◽  
Damian Rodríguez Sartori ◽  
Monica C. Gonzalez ◽  
Enzo Laurenti ◽  
Claudio Minero ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Advanced Oxidation Processes ◽  
Supported Catalyst ◽  
Advanced Oxidation ◽  
Multiwalled Carbon ◽  
Water Decontamination ◽  
Oxidation Processes ◽  
Commercial Carbon ◽  
Metallic Impurities

Under UV-Vis irradiation, the metallic impurities embedded in non-purified commercial carbon nanotubes generate radicals suitable for advanced oxidation processes. Semiconducting PPY membranes enhance the photo activity of a supported catalyst.

scholarly journals Environmentally Induced Changes of Commercial Carbon Nanotubes in Aqueous Suspensions. Adaptive Behavior of Bacteria in Biofilms

ACS Omega ◽  
2021 ◽  
Vol 6 (8) ◽  
pp. 5197-5208
Author(s):  
Damián Rodríguez Sartori ◽  
Marcos Bertuola ◽  
Alejandro Miñán ◽  
Eduardo Gonik ◽  
Mónica C. Gonzalez ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Adaptive Behavior ◽  
Aqueous Suspensions ◽  
Commercial Carbon ◽  
Induced Changes

Study of efficiency of different commercial carbon nanotubes on manufacturing of epoxy matrix composites

2013 ◽  
Vol 48 (25) ◽  
pp. 3169-3177 ◽  
Author(s):  
SG Prolongo ◽  
BG Melitón ◽  
A Jiménez-Suárez ◽  
A Ureña
Keyword(s):  
Carbon Nanotubes ◽  
Epoxy Matrix ◽  
Matrix Composites ◽  
Commercial Carbon

Scan Rates and the Disparities in the Electrochemical Double Layer Capacitor (EDLC) Performance

2020 ◽  
Vol 307 ◽  
pp. 125-130
Author(s):  
Lawal Sa'adu ◽  
Mohd Azman Hashim@Ismail
Keyword(s):  
Carbon Nanotubes ◽  
Cyclic Voltammetry ◽  
Double Layer ◽  
Vinylidene Fluoride ◽  
High Specific Capacitance ◽  
Double Layer Capacitor ◽  
Electrochemical Double Layer Capacitor ◽  
Commercial Carbon ◽  
Poly Vinylidene Fluoride ◽  
Electrochemical Double Layer

Three electrochemical double layer capacitor (EDLC) cells (Cell X, Y and Z) made from an electrode of 90 wt. % of the multiwalled commercial carbon nanotubes, 10 wt. % of poly (vinylidene fluoride-co-hexafluoropropylene) and three different samples of electrolytes polymer electrolyte made up of a compositions of 50:50, 60:40 and 70:30 wt.% of H3PO4/PVA (in ratio) soaked in a filter paper was characterized in this study. The aim is to ascertain the disparities in performances of the cells in relation to their respective scan rates. Cyclic voltammetry (CV) measurement of cells shows a high specific capacitance of 313 Fg−1 for the scan rates 10 mV was recorded from the cell with the highest composition H3PO4/PVA ratio (i.e. 70:30 wt.%). However, when the CV of the cell was measured with different scan rates, disparities in the performance occurred, as only 94 and 174 Fg−1 was recorded at the scan rates 100 and 50 mV respectively for cell-X. The result was not different when the two other cells (60:40 and 70:30 wt. % of H3PO4/PVA) were measured at the same scan rates.

Outstanding electromagnetic interference shielding of silver nanowires: comparison with carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (70) ◽  
pp. 56590-56598 ◽  
Author(s):  
Mohammad Arjmand ◽  
Aref Abbasi Moud ◽  
Yan Li ◽  
Uttandaraman Sundararaj
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrical Properties ◽  
Electromagnetic Interference ◽  
Silver Nanowires ◽  
Silver Nanowire ◽  
Electromagnetic Interference Shielding ◽  
Commercial Carbon

Synthesized silver nanowire/polystyrene nanocomposites showed superior electrical properties to commercial carbon nanotube/polystyrene nanocomposites at high filler loadings. This was ascribed to the higher metallic nature of silver nanowires.

Making a commercial carbon fiber cloth having comparable capacitances to carbon nanotubes and graphene in supercapacitors through a “top-down” approach

Nanoscale ◽  
2015 ◽  
Vol 7 (7) ◽  
pp. 3285-3291 ◽  
Author(s):  
Tianchang Zhang ◽  
Christine H. J. Kim ◽  
Yingwen Cheng ◽  
Yanwen Ma ◽  
Hongbo Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Fiber ◽  
Mechanical Strength ◽  
Specific Capacity ◽  
Cyclic Stability ◽  
Top Down ◽  
High Specific Capacity ◽  
Carbon Fiber Cloth ◽  
Commercial Carbon

A “top-down” approach prepared carbon fiber cloth with superior mechanical strength and flexibility shows a high specific capacity and excellent cyclic stability.

A Comparison of Different Methods of MWCNTs Metalation in a Single Step Using Three Different Silver-containing Compounds

2019 ◽  
Vol 13 (1) ◽  
pp. 59-69
Author(s):  
Beatriz O. García ◽  
Oxana V. Kharissova ◽  
Rasika Dias ◽  
Francisco S. Aguirre-Tostado ◽  
César Leyva ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silver Nanoparticles ◽  
Size Range ◽  
Antibacterial Properties ◽  
Reaction System ◽  
Single Step ◽  
Reducing Agent ◽  
Commercial Carbon ◽  
Coated Carbon ◽  
Silver Compounds

Background: Synthesis and applications of Ag-coated carbon nanotubes are currently under intensive research, resulting in a series of recent patents. Silver nanoparticles are normally obtained from silver nitrate. However, there are also other silver-containing compounds that can facilitate the production of silver nanoparticles, such as silver(I) acetate and silver(II) oxide. Being combined with carbon nanotubes, silver nanoparticles can transfer to them some of their useful properties, such as conductivity and antibacterial properties, and contribute to improving their dispersion in solvents. Objective: To apply three different silver-containing precursors of Ag nanoparticles for the decoration of carbon nanotubes and study the morphology of formed composites by several methods. Method: Three different silver compounds were used as Ag source to carry out the functionalization and decoration of carbon nanotubes under ultrasonic treatment of the reaction system, containing, commercial carbon nanotubes, organic peroxides as oxidants or hydrazine as a reductant, and a surfactant. Resulting samples were analyzed by XRD and XPS spectroscopy, as well as TEM and SEM microscopy to study the morphology of formed nanocomposites. Results: Silver nanoparticles can be produced without the presence of a reducing agent. Applying hydrazine, as a reducing agent, it is possible to obtain functionalized carbon nanotubes doped with silver nanoparticles, in which their sizes are smaller (1-5 nm) compared to those obtained without using hydrazine. Conclusion: Silver nanoparticles having a size range between 2-60 nm can be produced without the presence of a reducing agent. The use of a reducing agent, such as hydrazine, affects the size of silver nanoparticles.

A Comparison Study on the Heat Transfer Behavior of Aqueous Suspensions of Rod Shaped Carbon Nanotubes with Commercial Carbon Nanotubes

2013 ◽  
Vol 667 ◽  
pp. 35-42
Author(s):  
Imran Syakir Mohamad ◽  
S. Thiru. Chitrambalam ◽  
Sharifah Bee Abdul Hamid ◽  
W. M. Chin ◽  
K.H. Yau ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Mechanical Characteristics ◽  
Arc Discharge ◽  
Dynamic Properties ◽  
Vibration Modes ◽  
Comparison Study ◽  
Commercial Carbon ◽  
Transfer Behavior ◽  
Physical Attributes ◽  
Number Of Publications

Carbon nanotubes (CNTs) are said to be among the most potential materials in applications of nanodevices, nanocomposites and nanostructure due to their excellent mechanical and physical attributes. CNTs were first discovered by S. Iijima in 1991 where he has reported in his article the synthesis of needle-like tubes by using an arc-discharge evaporation. After the immense discovery, the number of research on CNTs has increased significantly, focusing on their mechanical characteristics, dynamics properties and applications in nanotechnology. This paper attempts to present a review of a quite number of publications on CNTs and their dynamic properties. The main topics covered in this review are the applications of CNTs, their dynamic characteristics including the modeling and simulation of vibrating CNTs, and finally the vibration modes of CNTs.

Hydrodeoxygenation of guaiacol over Ni/carbon catalysts: effect of the support and Ni loading

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 2611-2623 ◽  
Author(s):  
A. B. Dongil ◽  
I. T. Ghampson ◽  
R. García ◽  
J. L. G. Fierro ◽  
N. Escalona
Keyword(s):  
Carbon Nanotubes ◽  
Activated Carbon ◽  
Commercial Carbon ◽  
Carbon Catalysts ◽  
Effect Of The Support

Commercial carbon nanotubes (CNT), oxidized CNT (CNTox) and activated carbon (AC) were used as supports to prepare Ni/C catalysts with a nominal loading of 15 wt%.

Sign in / Sign up

Export Citation Format

Share Document