Chirality fingerprinting and geometrical determination of single-walled carbon nanotubes: Analysis of fine structure of X-ray diffraction pattern

Mitsuyama, Ryo; Tadera, Shin; Kyakuno, Haruka; Suzuki, Ryosuke O.; Ishii, Hiroyoshi; Nakai, Yusuke; Miyata, Yasumitsu; Yanagi, Kazuhiro; Kataura, Hiromichi; Maniwa, Yutaka

doi:10.1016/j.carbon.2014.04.006

Cited by 13 publications

(10 citation statements)

References 42 publications

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“…6(b) and 3(b). 40 Although ice Ih peaks can be seen in the low temperature XRD patterns in Fig. 6, they appear below 250 K on cooling and disappear on heating above 270 K. This behavior is almost the same as that of bulk water.…”

Section: Formation Of Ice Ih Outside Swcnts and Wet-dry Transitionmentioning

confidence: 78%

“…Although this analysis has been widely applied in previous works, [26][27][28]31,[35][36][37][38] it does not provide information regarding all possible water adsorption sites, such as on the bundle surfaces. Therefore, as an alternative approach, we also used the Debye formula below to calculate the XRD patterns, 32,39,40 …”

Section: Xrd Simulations Using the Debye Formulamentioning

confidence: 99%

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Diameter-dependent hydrophobicity in carbon nanotubes

Kyakuno

Fukasawa

Ichimura

et al. 2016

The Journal of Chemical Physics

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Diameter-dependent hydrophobicity in carbon nanotubesSingle-wall carbon nanotubes (SWCNTs) are a good model system that provides atomically smooth nanocavities. It has been reported that water-SWCNTs exhibit hydrophobicity depending on the temperature T and the SWCNT diameter D. SWCNTs adsorb water molecules spontaneously in their cylindrical pores around room temperature, whereas they exhibit a hydrophilic-hydrophobic transition or wet-dry transition (WDT) at a critical temperature T wd ≈ 220-230 K and above a critical diameter D c ≈ 1.4-1.6 nm. However, details of the WDT phenomenon and its mechanism remain unknown. Here, we report a systematic experimental study involving X-ray diffraction, optical microscopy, and differential scanning calorimetry. It is found that water molecules inside thick SWCNTs (D > D c ) evaporate and condense into ice Ih outside the SWCNTs at T wd upon cooling, and the ice Ih evaporates and condenses inside the SWCNTs upon heating. On the other hand, residual water trapped inside the SWCNTs below T wd freezes. Molecular dynamics simulations indicate that upon lowering T, the hydrophobicity of thick SWCNTs increases without any structural transition, while the water inside thin SWCNTs (D < D c ) exhibits a structural transition, forming an ordered ice. This ice has a well-developed hydrogen bonding network adapting to the cylindrical pores of the SWCNTs. Thus, the unusual diameter dependence of the WDT is attributed to the adaptability of the structure of water to the pore dimension and shape. Published by AIP Publishing.[http://dx

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Section: Formation Of Ice Ih Outside Swcnts and Wet-dry Transitionmentioning

confidence: 78%

Section: Xrd Simulations Using the Debye Formulamentioning

confidence: 99%

Diameter-dependent hydrophobicity in carbon nanotubes

Kyakuno

Fukasawa

Ichimura

et al. 2016

The Journal of Chemical Physics

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“…As the temperature of heat-treatment increases, the sharpening and increase in intensity of diffraction peaks is clearly visible. The diffraction pattern in Figure 2a for Spheron Grade 6 C 2018, 4, 68 4 of 48 carbon black heat-treated at 2800 • C is sufficiently sharp to distinguish readily the basal planes (002), (004), and (006) reflections from the two-dimensional (100) and (110) lattice reflections. Biscoe and Warren analysed the changes in the structure of carbon black during heat-treatment based on the position and width of the diffraction peaks.…”

Section: Carbon Blackmentioning

confidence: 97%

Structure of Carbon Materials Explored by Local Transmission Electron Microscopy and Global Powder Diffraction Probes

Jurkiewicz

Pawlyta

Burian

2018

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Transmission electron microscopy and neutron or X-ray diffraction are powerful techniques available today for characterization of the structure of various carbon materials at nano and atomic levels. They provide complementary information but each one has advantages and limitations. Powder X-ray or neutron diffraction measurements provide structural information representative for the whole volume of a material under probe but features of singular nano-objects cannot be identified. Transmission electron microscopy, in turn, is able to probe single nanoscale objects. In this review, it is demonstrated how transmission electron microscopy and powder X-ray and neutron diffraction methods complement each other by providing consistent structural models for different types of carbons such as carbon blacks, glass-like carbons, graphene, nanotubes, nanodiamonds, and nanoonions.

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“…Notons que l'on n'observe pas de manière évidente sur la fi gure 2a la croix de Saint-André sous-jacente à une hélice, décrite dans l'encadré 2, à cause des effets d'interférences entre les différentes hélices qui composent chaque nanotube. Mais on peut démontrer à partir du cliché de diffraction que le tube interne est caractérisé par les indices chiraux (41, [7] d'obtenir des échantillons contenant majoritairement une seule sorte de nanotube (n,m) et d'en déterminer la structure par diffraction des rayons X.…”

Section: La Diffraction Des éLectrons Et Des Rayons Xunclassified