A Facile Method for Creating an Array of Metal-Filled Carbon Nanotubes

Bao, Jianchun; Tie, Chenyang; Xu, Zheng; Suo, Zhiyong; Zhou, Qi; Hong, Jianhui

doi:10.1002/1521-4095(20021016)14:20<1483::aid-adma1483>3.0.co;2-6

Cited by 107 publications

(82 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to construct functional elements of diamondoid-based NEMS devices a controllable method to arrange and possibly connect the diamondoids with strong bonds is desirable. An intriguing possibility is to use carbon nanotubes (CNT) as vessels in the same way as for fullerenes [7][8][9][10][11][12][13][14], polymers [15] and other organic [13,[16][17][18] and inorganic materials [19][20][21][22]. Very soon after their discovery the nanotubes were proposed as possible nano sized vessels for chemical reactions [23,24].…”

Section: Introductionmentioning

confidence: 99%

Confined adamantane molecules assembled to one dimension in carbon nanotubes

Yao

Stenmark

Abou-Hamad

et al. 2011

Carbon

View full text Add to dashboard Cite

We have encapsulated adamantane (C 10 H 16 ) in single-and multi walled carbon nanotubes.Adamantane is a high symmetry cage like molecule with point group symmetry, T d and can be considered as a hydrogen-terminated diamond fragment. We confirmed and identified the successful filling by high resolution transmission electron microscopy, 13 C nuclear magnetic resonance, and infrared and Raman spectroscopy. 13C nuclear magnetic resonance of the adamantane filled nanotubes reveals that the adamantane molecules stop rotating after encapsulation. A blue-shift of the Raman active radial breathing modes of the carbon nanotubes supports this and suggests a significant interaction between encapsulated adamantane molecules and the single wall nanotubes. The encapsulated adamantane molecules exhibit red shifted infrared C-H vibration modes which we assign to a slight elongation of the C-H bonds. We observe both a nanotube diameter dependence of the adamantane fill ratio and a release rate of adamantane from the CNTs that depends on the CNT diameters.

show abstract

Section: Introductionmentioning

confidence: 99%

Confined adamantane molecules assembled to one dimension in carbon nanotubes

Yao

Stenmark

Abou-Hamad

et al. 2011

Carbon

View full text Add to dashboard Cite

show abstract

“…[13] Foreign materials have been encapsulated inside CNTs by methods such as wet chemical insertion, capillary suction, in situ arc discharge, and catalyzed hydrocarbon pyrolysis. For example, i) the fabrication of carbon-coated Fe nanorods by the pyrolysis of ferrocene in vacuum, [14] ii) the production of Co-filled CNTs by using an alumina membrane as a template, [15] and iii) the filling of Fe into CNTs via a metal-impregnated polymer precursor [16] have been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Large‐Scale Synthesis, Annealing, Purification, and Magnetic Properties of Crystalline Helical Carbon Nanotubes with Symmetrical Structures

Tang

Wang

et al. 2007

Adv Funct Materials

View full text Add to dashboard Cite

Crystalline helical carbon nanotubes (HCNTs) are synthesized as the main products in the pyrolysis of acetylene at 450 °C over Fe nanoparticles generated by means of a combined sol–gel/reduction method. Transmission electron microscopy (TEM) images reveal that there are two HCNTs attached to each Fe3C nanoparticle, and that the two HCNTs are mirror images of each other. Annealing in Ar at 750 °C and purification by immersion in hot (90 °C) HCl solution do not significantly change the structure of the HCNTs, despite the partial removal of Fe nanoparticles by the latter treatment. The magnetic properties of the as‐prepared, annealed, and purified HCNTs have been systematically examined. The annealed sample shows relatively high magnetization due to the ferromagnetic α‐Fe nanoparticles encapsulated in the HCNT nodes. In the case of HCl treatment, relatively pure HCNTs are obtained by the removal of ferromagnetic nanoparticles from the double‐HCNT nodes. The effects of the amount of catalyst used in the synthesis process on the morphology and yield of the carbon products have also been investigated.

show abstract

“…The confined environments of nanotubes permit the formation of unique encapsulated low dimensional structures with unusual properties compared with the bulk with possible applications as nano-catalysts, electronic devices and magnetic tapes [4,5]. Most of the previously reported methods for the fabrication of these one-dimensional nanostructures involve multi-step processes, following CNT synthesis [6][7][8]. Various techniques have been developed for the synthesis of CNTs [9][10][11].…”

mentioning

confidence: 99%

Single step process for the synthesis of carbon nanotubes and metal/alloy-filled multiwalled carbon nanotubes

2007

View full text Add to dashboard Cite

A single-step approach for the synthesis of multi-walled nanotubes (MWNT) filled with nanowires of Ni/ternary Zr based hydrogen storage alloy has been illustrated. We also demonstrate the generation of COfree hydrogen by methane decomposition over alloy hydride catalyst. The present work also highlights the formation of single-walled nanotubes (SWNT) and MWNTs at varying process conditions. These carbon nanostructures have been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution TEM (HRTEM), Energy dispersive X-ray analysis (EDX) and Raman spectroscopy. This new approach overcomes the existing multi-step process limitation, with possible impact on the development of future fuel cell, nano-battery and hydrogen sensor technologies.

show abstract

A Facile Method for Creating an Array of Metal-Filled Carbon Nanotubes

Cited by 107 publications

References 4 publications

Confined adamantane molecules assembled to one dimension in carbon nanotubes

Confined adamantane molecules assembled to one dimension in carbon nanotubes

Large‐Scale Synthesis, Annealing, Purification, and Magnetic Properties of Crystalline Helical Carbon Nanotubes with Symmetrical Structures

Single step process for the synthesis of carbon nanotubes and metal/alloy-filled multiwalled carbon nanotubes

Contact Info

Product

Resources

About