hydrogen storage in carbon nanotube

... 2.1.2 Carbon Nanotubes 2.1.2.1 Single-walled Carbon Nanotubes (SWNTs) 2.1.2.2 Multi-walled Carbon Nanotubes (MWNTs) 2.2 Hydrogen Storage in Non-carbonaceous Nanotubes 2.2.1 Boron Nitride Nanotubes ... diameter In the bundled sample, physisorption of hydrogen occurs in carbon nanotubes by trapping hydrogen molecules inside the cylindrical structure of the nanotube or by trapping hydrogen molecule in ... milling) is introduced in this chapter as well 2.1 Hydrogen Storage in Carbon Nanostructured Materials The discovery of new classes of carbon materials such as graphite nanofibers and carbon nanotubes...

Ngày tải lên: 22/10/2015, 21:14

... one-sided interface fitting results ͑b͒ Resolved one-sided interface fitting results ͑c͒ Lumped two-sided interface fitting results ͑d͒ Resolved twosided interface fitting results The two-sided fitting ... changes in the measured phase-shift signal Consequently, the resulting thermal diffusivities exhibit greater uncertainty that increases as the measured interface resistance increases Uncertainties in ... two-sided CNT interface results are illustrated in Fig and summarized in Table II The resistances at CNTsubstrate interfaces ͑and the CNT-CNT interface for the twosided interface͒ and the intrinsic conductive...

Ngày tải lên: 06/05/2014, 08:53

... thinking Because of the synthesis impairment, acetylcholine is decreased in the neurons in the Alzheimer disease brain, leading to the incapability of learning, memory, and thinking Providing ... targeting of carbon nanotubes in mice Nat Nanotechnol 2007, 2:47-52 56 Liu Z, Tabakman S, Welsher K, Dai H: Carbon nanotubes in biology and medicine in vitro and in vivo detection, imaging and ... considered for obtaining desired treatment effects The studied ways of CNT administration include oral and injections such as subcutaneous injection, abdominal injection, and intravenous injection There...

Ngày tải lên: 20/06/2014, 22:20

... can be transferred from the nanotube crystalline structure into the insulating polymer matrix This behavior has already been observed in cured resins [27, 28], but not in the pre-cured state The ... evidence T1/2 specific behavior in carbon nanotube systems Carbon 2004, 42:991-995 21 Li Q, Liu C, Wang X, Fan S: Measuring the thermal conductivity of individual carbon nanotubes by the Raman shift ... mechanisms in carbon nanotube/ epoxy composites Polymer 2006, 47:2036-2045 28 Moisala A, Li Q, Kinloch IA, Windle AH: Thermal and electrical conductivity of single- and multi-walled carbon nanotube- epoxy...

Ngày tải lên: 20/06/2014, 23:20

... embedded in PMMA is explained by a combination of Sheng’s fluctuation induced tunneling and 1D variable range hopping models [20] Percolation in a 2D MWCNT network [24] is strongly influenced ... embedded in SiN was XTEM investigated The TEM Page of investigations, performed on nanotubes deposited directly on the carbon grid, reveal a uniform spatial extension of MWCNT network In our opinion, ... given by the conductance minima Abbreviations CNTs: carbon nanotubes; MWCNTs: multi-walled carbon nanotubes; PMMA: poly(methyl methacrylate); SWCNTs: single-walled carbon nanotubes; THF: tetrahydrofuran;...

Ngày tải lên: 21/06/2014, 06:20

... samples were imbedded in KBr disks Elemental analysis (EA) was performed by using a CE Instruments EA1110 The melting points (mp) were determined on a Mel-Temp melting point apparatus and are ... was conducted both in air and nitrogen atmospheres with a heating rate of 10 °C/min using a Perkin–Elmer TGA7 The field emission scanning electron microscopy (FE-SEM) used in this work was a LEO ... without causing the sidewall opening and breaking of the stable crystalline carbon particles This implies that PPA can selectively destroy the amorphous carbons Unlike SWCNTs treated in hydrochloric...

Ngày tải lên: 22/06/2014, 00:20

... sp2bonded carbon atoms in the two-dimensional hexagonal lattice of the graphite layer In addition, the G-band indicates the degree of crystallinity in the graphite structure, whereas the intensity ... Amorphous carbon and carbonaceous particles were decreased and denser vertically aligned MWCNTs were obtained for a higher flow rate pretreatment, as shown in Fig In addition, the MWCNTs shown in Fig ... H2 gas [20] in plasma treatment can provide extra exciting H2 (H*) Therefore, much higher carbon productivity is obtained in the presence of H2 The structure of MWCNTs, which is obtained from the...

Ngày tải lên: 22/06/2014, 01:20

... addition to the inherent interest in understanding interacting 1D systems, intertube interactions are of substantial technological importance because SWNTs naturally form bundles in typical syntheses ... dispersion of the SWNTs in line with current bibliography [18] It was clear from these measurements (Fig 1) that upon increasing the nanotube concentration in our composites, the nanotubes form ropes ... phonon interactions) This coupling quenches the radiative recombination opening nonradiative relaxation paths by transferring the energy to the lattice via phonons emission In addition to monitoring...

Ngày tải lên: 22/06/2014, 01:20

... profound shear-thinning behavior as the / increased Percolation threshold represents a starting point of a three-dimensional MWNT network in the matrix, and can be determined from the starting / at which ... stretching band at 1600 cm-1, indicating that functional groups were introduced [38] This result demonstrates that 4-aminobenzoyl moiety was covalently attached to the surface of MWNT as shown in ... were added to a 10 mL glass syringe using a needle tip with a 0.5 mm diameter The feeding rate was 0.2 mL/h, which was controlled by a syringe pump Electrospinning voltage, the distance between...

Ngày tải lên: 22/06/2014, 01:20

... irregular, having different periodicities in different parts and being asymmetric with VD, which points to a non-ideal Fabry–Perot interference pattern due to minor disorder or inhomogeneity ... inner tubes The continuously switching between two electronic states can be attributed to the locally orientational depinning or melting of a small part of inner tube at certain temperature (TOM, ... shown in the inset of Fig 3a, the conductance behaves completely different as temperature is cooled down in different thermal cycles: decreases in the first cooling process (black curve), but increases...

Ngày tải lên: 22/06/2014, 01:20

... determine total litter mass Fine root biomass in the soil underlying the removed litter columns was estimated using a soil corer (inner diameter of cm; Eijkelkamp, The Netherlands) Intact 15-cm increments ... III) indicate that the soil is in the aluminium buffer region [42] In this buffer region, base cation absorption is reduced and base cations are subject to leaching [40] This could in part explain ... Globally, soil organic matter content increases with decreasing temperature, increasing precipitation and increasing clay content [36] At the stand level, soil C storage depends on the quantity, quality...

Ngày tải lên: 08/08/2014, 14:21

... Diagnostic and prognostic role of the insulin growth factor pathway members insulin-like growth factor-II and insulin-like growth factor binding protein-3 in serous effusions Hum Pathol 2009, ... Park YL, Sohn JH, Kim HS: Prognostic significance of insulin growth factor-I receptor and insulin growth factor binding protein-3 expression in primary breast cancer Oncol Rep 2010, 23:989-95 15 ... IGF-1: Insulin like growth factor-1; IGFBP: IGF binding protein; LCM: low current measurement system; MMTV: mouse mammary tumor virus; RIA: radioimmunoassay; SWNT: Single-walled carbon nanotubes...

Ngày tải lên: 11/08/2014, 00:23

... microscopy SWCNH single-walled carbon nanohorn SWCNHh single-walled carbon nanohorn with hydrogen- terminated edge SWCNHox oxidised single-walled carbon nanohorn SWCNT single-walled carbon nanotube xxv ... University of Singapore, for kindly providing platinum(IV) compounds, and Prof RAMAPRABHU Sundara, Indian Institute of Technology, Madras, India, for providing ultrapure multi-walled carbon nanotubes ... established a variety of loading strategies, mainly including (a) chemical binding to external surface, (b) π-π stacking on both internal and external surface, (c) encapsulation into inner cavity, etc.,...

Ngày tải lên: 08/09/2015, 18:10

... during desorption in a metal hydrogen reactor”, Int J Hydrogen Energy, 1995, 20, 881-891 [11] D Mat, Y Kolpan, “Numerical study of hydrogen absorption in an Lm-Ni5 hydride reactor”, Int J Hydrogen ... obtained a PhD in Mechanical engineering from National Cheng Kung University in Taiwan, 2006 He was a junior researcher at the Institute of Nuclear Energy Research Now he is working at the Refining ... When the hydrogen is initially introduced in the inner layer (r=rinner) of metal hydride reactor, a solid solution (α-phase) region is observed as the hydrogen absorption process After certain amount...

Ngày tải lên: 05/09/2013, 14:58

... settings locally The following example demonstrates storing the user’s name in IsolatedStorageSettings public partial class MainPage : UserControl { private IsolatedStorageSettings isSettings ... ShowGridLines="True">

Ngày tải lên: 05/10/2013, 04:20

... Part II Carbon nanotubes as nanofillers Allotropic forms of Carbon Curl, Kroto, Smalley 1985 graphene Iijima 1991 (From R Smalley´s web image gallery) Carbon Nanotubes - Single-wall nanotubes ... Advantages : temperature, the insert gas, pressure, gas flow, catalyst, etc – Insert hydrocarbon gas (C2H2, C2H4, CH4, etc) into quartz tube and obtain Energy  insert gas decomposed and CNT ... cohesion between nanotubes nm TEM of SWNTs : axial view Bundle-like aggregation maintained upon melt blending within polymer matrix Bundle-like aggregates EVA + MWNT’s 500 nm The Processing Challenge...

Ngày tải lên: 23/10/2013, 19:15

... studied the binding of pristine fullerene complexed with cyclodextrin on bovine serum albumin protein demonstrating that the binding is a multistep process First, the cyclodextrin dissociation ... the work Printed on acid-free paper springer.com Preface The emerging field of nanotechnology is affirming its increasing importance day by day In this context fullerenes and carbon nanotubes ... experiments in in vitro agarose gel infusion and in vivo infusion in rat brain have been carried out (Fatouros et al., 2006) In this case Gd3N@C80, functionalized with PEG and hydroxyl groups, was examined...

Ngày tải lên: 17/02/2014, 05:20

Ngày tải lên: 23/02/2014, 02:20

... properties of 1D carbon nanotubes are seen to arise predominately from intralayer interactions, rather than from interlayer interactions between multilayers within a single carbon nanotube or between ... on single nanotubes, characterized for their diameter and chirality Interesting effects can be observed in carbon nanotubes for diameters in the range 1-20 nm, depending Physics of carbon nanotubes ... observed that the exposed nanotube is continuing into the fiber as a central hollow core, as indicated by the white arrow in the figure It is interesting that, as indicated before (in Fig 14a), the core...

Ngày tải lên: 05/03/2014, 15:21

... bridging function over classical and quantum mechanics It is quite natural that human beings living in macroscopic world could hardly grasp the phenomena occurring in the microscopic world in an intuitive ... with Hamada i indices (40+8k, S+k) with k=0, ,9 In (a), (al) and (a2) the initial stacking at q0 was ABAB whereas in (b), (bl) and (b2) the initial stacking was random (a) The normal incidence pattern ... 20 carbon atoms in layers tube were detected in carbon distribution image In addition, the carbon mapping from a conical-tip region with progressive closure of graphitic sheets could distinguish...

Ngày tải lên: 05/03/2014, 17:20