Confinement effects on the shape and composition of bimetallic nano-objects in carbon nanotubes

2016 ◽  
Vol 52 (11) ◽  
pp. 2362-2365 ◽  
Author(s):  
X. Li ◽  
T. Hungria ◽  
C. Garcia Marcelot ◽  
M. R. Axet ◽  
P.-F. Fazzini ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Confinement Effects ◽  
Molecular Precursors ◽  
Bimetallic Alloys

The shape and the composition of bimetallic alloys prepared by in situ reduction of molecular precursors depends on the carbon nanotube diameter.

Synthesis and Characterization of Poly(2,5-benzimidazole) (ABPBI) Grafted Carbon Nanotubes

2009 ◽  
Vol 1240 ◽  
Author(s):  
Ji-Ye Kang ◽  
Su-Mi Eo ◽  
Loon-Seng Tan ◽  
Jong-Beom Baek
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Interfacial Adhesion ◽  
Synthesis And Characterization ◽  
Acylation Reaction ◽  
Single Walled Carbon Nanotube ◽  
Mechanical And Electrical Properties ◽  
Multi Walled Carbon Nanotube

AbstractSingle-walled carbon nanotube (SWCNT) and multi-walled carbon nanotube (MWCNT) were functionalized with 3,4-diaminobenzoic acid via “direct” Friedel-Crafts acylation reaction in PPA/P2O5 to afford ortho-diamino-functionalized SWCNT (DIF-SWCNT) and MWCNT (DIF-MWCNT). The resultant DIF-SWCNT and DIF-MWCNT showed improved solubility and dispersibility. To improve interfacial adhesion between CNT and polymer matrix, the grafting of ABPBI onto the surface of DIF-SWCNT (10 wt%) or DIF-MWCNT (10 wt%) was conducted by simple in-situ polymerization of AB monomer, 3,4-diaminobenzoic acid dihydrochloride, in PPA. The resultant ABPBI-g-MWCNT and ABPBI-g-SWCNT showed improved the mechanical and electrical properties.

scholarly journals In situ synthesis of metal embedded nitrogen doped carbon nanotubes as an electrocatalyst for the oxygen reduction reaction with high activity and stability

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 25051-25056 ◽  
Author(s):  
Yanhong Yin ◽  
Hengbo Zhang ◽  
Rongzhen Gao ◽  
Aili Wang ◽  
Xinxin Mao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Activity ◽  
Reduction Reaction ◽  
In Situ Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Carbon

In this work, a Co–N doped carbon nanotube (CNT) catalyst was fabricated via a simple pyrolysis approach.

Flexible supercapacitors based on a polyaniline nanowire-infilled 10 nm-diameter carbon nanotube porous membrane by in situ electrochemical polymerization

2016 ◽  
Vol 4 (32) ◽  
pp. 12602-12608 ◽  
Author(s):  
Ranran Wang ◽  
Qiang Wu ◽  
Xiaohua Zhang ◽  
Zhaohui Yang ◽  
Lijun Gao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Conducting Polymers ◽  
Electrochemical Polymerization ◽  
Porous Membrane ◽  
Flexible Supercapacitors ◽  
Charge Discharge

Nano-confined channels of carbon nanotubes greatly suppress volumetric changes of conducting polymers during cyclic charge–discharge processes, preventing loss of capacitance and degradation of the electrodes.

Electrochemical Tuning of Single-Wall Carbon Nanotube Mat and Investigations on Actuator Mechanism

2004 ◽  
Vol 855 ◽  
Author(s):  
S. Gupta ◽  
M. Hughes ◽  
J. Robertson
Keyword(s):  
Carbon Nanotubes ◽  
Charge Transfer ◽  
Carbon Nanotube ◽  
Bond Length ◽  
Upper Bound ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon Nanotube ◽  
Single Wall Carbon ◽  
Electrochemical Tuning

ABSTRACTElectrochemical tuning of single-wall carbon nanotubes has been investigated using in situ Raman spectroscopy. We built a linear actuator from single-wall carbon nanotube mat and studied in several alkali metal (Li, Na, and K) and alkaline earth (Ca) halide solutions. The variation of bonding with electrochemical biasing was monitored using in situ Raman. This is since Raman can detect changes in C-C bond length: the radial breathing mode (RBM) at ∼190 cm−1 varies inversely with the nanotube diameter and the G band at ∼1590 cm−1 varies with the axial bond length. In addition, the intensities of both the modes vary significantly in a nonmonotonic manner pointing at the emptying/depleting or filling of the bonding and anti-bonding states - electrochemical charge injection. We discuss the variation of spectroscopic observables (intensity/frequency) of these modes providing valuable information on the charge transfer dynamics on the single-wall carbon nanotubes mat surface. We found the in-plane compressive strain (∼ -0.25%) and the charge transfer per carbon atom (fc ∼ -0.005) as an upper bound for the electrolytes used i.e. CaCl2. These results can be quantitatively understood in terms of the changes in the energy gaps between the one-dimensional van Hove singularities in the electron density of states arising possibly due to the alterations in the overlap integral of π bonds between the p orbitals of the adjacent carbon atoms. Moreover, the extent of variation of the absolute potential of the Fermi level or alternatively modification of band gap is estimated from modeling Raman intensity to be around 0.1 eV as an upper bound for CaCl2.

Metal nanoparticles, nanowires, and carbon nanotubes

2000 ◽  
Vol 72 (1-2) ◽  
pp. 21-33 ◽  
Author(s):  
C. N. R. Rao ◽  
G. U. Kulkarni ◽  
A. Govindaraj ◽  
B. C. Satishkumar ◽  
P. John Thomas
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Nanoparticles ◽  
Spectroscopic Techniques ◽  
Single Walled Nanotubes ◽  
Size Dependent ◽  
Nanotube Bundles ◽  
2D And 3D ◽  
Nonmetal Transition

The size-dependent metal to nonmetal transition in metal nanoparticles has been investigated using photoelectron and tunneling spectroscopic techniques. Metal nanoparticles capped by thiols are shown to organize into ordered 2D and 3D structures. Single-walled nanotubes and aligned carbon nanotube bundles have been synthesized by controlling the size of metal nanoparticles produced in situ during the pyrolysis of precursors. Nanowires of gold and other metals have been produced in the capillaries of the single-walled nanotubes.

Uniformly deposited Pt nanoparticles onto crosslinked ionic liquids wrapped carbon nanotubes for methanol electrooxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (86) ◽  
pp. 82726-82732 ◽  
Author(s):  
Li Luo ◽  
Zheng Zhou ◽  
Ye Ren ◽  
Guang-Xin Chen ◽  
Qifang Li
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Carbon Nanotube ◽  
Free Radical ◽  
Outer Surface ◽  
Pt Nanoparticles ◽  
Multi Walled Carbon Nanotube ◽  
Vinyl Benzyl

A type of skin-core structured hybrid with a multi-walled carbon nanotube (MWCNT) center was synthesized by in situ free-radical polymerization of vinyl-benzyl ionic liquid and divinylbenzene on the outer surface of MWCNTs.

In situ polymerization of ethylenedioxythiophene from sulfonated carbon nanotube templates: toward high efficiency ITO-free solar cells

2016 ◽  
Vol 4 (17) ◽  
pp. 6645-6652 ◽  
Author(s):  
Xiaotian Hu ◽  
Lie Chen ◽  
Licheng Tan ◽  
Ting Ji ◽  
Yong Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
Carbon Nanotube ◽  
High Efficiency ◽  
In Situ Polymerization ◽  
Polystyrene Sulfonate

A fabrication of in situ poly(3,4-ethylenedioxythiophene):polystyrene sulfonate via a polymerization template of sulfonated carbon nanotubes is used for universal electrodes.

In situ synthesis of N-doped carbon nanotubes–BiOCl nanocomposites and their synergistic photocatalytic performance

RSC Advances ◽  
2016 ◽  
Vol 6 (4) ◽  
pp. 2926-2934 ◽  
Author(s):  
LuPing Zhu ◽  
LingLing Wang ◽  
NaiCi Bing ◽  
Peng Li ◽  
LiJun Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Photocatalytic Performance ◽  
In Situ Synthesis ◽  
Growth Strategy ◽  
Photocatalytic Efficiency

N-Doped carbon nanotube–BiOCl (NCB) nanocomposites were prepared by an in situ growth strategy. The NCB nanocomposites possessed enhanced photocatalytic efficiency, compared with CNxNTs, BiOCl 3D flower-like hierarchitectures, and P25.

scholarly journals Dissolvable thermoplastic interleaves for carbon nanotube localization in carbon/epoxy laminates with integrated damage sensing capabilities

2016 ◽  
Vol 17 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Han Zhang ◽  
Yi Liu ◽  
Menglong Huang ◽  
Emiliano Bilotti ◽  
Ton Peijs
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Reinforced Composites ◽  
Reinforced Plastics ◽  
Damage Sensing ◽  
Carbon Nanotube Network ◽  
Liquid Resin Infusion ◽  
Carbon Fibre Reinforced Plastics ◽  
Fibre Reinforced Composites

A nano-engineered hierarchical composite with localized toughening and integrated damage sensing capabilities is described. Thermoplastic phenoxy interleaves which dissolve in epoxy resin upon heating and subsequently phase separate upon curing were employed as carrier films for localized deposition of carbon nanotubes in carbon fibre–reinforced plastics, avoiding filtration of carbon nanotubes during liquid resin infusion. Interlaminar fracture toughness was improved compared to reference epoxy-based laminates, while the introduced carbon nanotube network was utilized for in situ damage sensing purposes. Using this technology based on dissolvable thermoplastic carrier films, nanofillers can be easily introduced into fibre-reinforced composites at desired regions while simultaneously avoiding typical nanofiller drawbacks such as filtering or increased resin viscosity.

Functionalisation of Microfluidic Channels with In Situ Grown Carbon Nanotubes

2005 ◽  
Vol 872 ◽  
Author(s):  
K. Gjerde ◽  
T. Schurmann ◽  
K.B.K. Teo ◽  
M. Aono ◽  
W.I. Milne ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Surface Properties ◽  
Microfluidic Channels ◽  
Electrical Field ◽  
Multiwalled Carbon ◽  
Carbon Nanotube Growth ◽  
Nanotube Growth ◽  
Local Distortions

AbstractWe present a new route towards customizing the surface properties of microfluidic channels, by a forest of in situ grown multiwalled carbon nanotubes (CNT). Local distortions of the electrical field direction are used to control the direction of the carbon nanotube growth.

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