Multilayer Adsorption on Heterogeneous Surfaces

Rudziński, W.; Everett, D. H.

doi:10.1016/b978-0-12-601690-1.50015-1

Cited by 370 publications

(815 citation statements)

References 80 publications

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“…This is responsible for the high slope of the plateau. (ii) Kr condensation does not occur at once over the entire surface of the nanotubes, but occurs successively on several uniform patches with different characteristic energies [19]. The differences in the energies may result either from defects in the nanotubes wall or from the dispersion of their outer radii, i.e.…”

Section: Nanotube Contentmentioning

confidence: 99%

Comparison of different methods for characterizing multi-walled carbon nanotubes

Gommes

Blacher

Dupont-Pavlovsky³

et al. 2004

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Four complementary and independent methods are used to characterize nanotube samples: (i) TEM observation coupled with image analysis, (ii) nitrogen and krypton adsorption isotherm analysis, (iii) thermogravimetry and (iv) wide angle X-ray scattering. The methodology is discussed on the basis of two multi-walled carbon nanotube samples produced by the CCVD technique with very different reaction rates. It is shown that the total amount of deposited carbon is larger for the sample produced at the higher rate, that the fraction of nanotubes in the deposited carbon does not seem to be significantly different, but that the crystallinity of the nanotubes wall is larger for the sample produced at the lowest reaction rate.

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Section: Nanotube Contentmentioning

confidence: 99%

Comparison of different methods for characterizing multi-walled carbon nanotubes

Gommes

Blacher

Dupont-Pavlovsky³

et al. 2004

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…A Maxwell adsorption isotherm consists of the corresponding adsorption isotherm defined by (16), (17) without the unstable branch and the metastable parts of the stable branches and the segment AB of the vertical straight line ℓ = ℓ M connecting the stable branches. Hence, a Maxwell adsorption isotherm is an adsorption isotherm of a system of adparticles having one stable state for any concentration ℓ except for the single concentration ℓ = ℓ M for which the system has two energy-equivalent states and which, following [17], may be called the phase transition concentration.…”

Section: -5mentioning

confidence: 99%

“…Various generalizations of the classical Langmuir model of adsorption provide new specific features for the amount of adsorbed substance and its kinetics (see, e.g., [5,[10][11][12][13][14][15][16][17][18]). For example, taking account of lateral interactions between adparticles leads to a hysteresis loop of adsorption isotherms and to different structural changes of the adsorbent surface [5][6][7][8][14][15][16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Adsorption-induced surface normal relaxation of a solid adsorbent

Usenko¹

2016

Condens. Matter Phys.

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We investigate adsorption of a gas on the flat surface of a solid deformable adsorbent taking into account thermal fluctuations and analyze in detail the effect of thermal fluctuations on the adsorbent deformation in adsorption. The condition for coexistence of two states of a bistable system of adsorbed particles is derived. We establish the specific properties of the adsorption-induced surface normal relaxation of an adsorbent caused by thermal fluctuations. The mean transition times between two stable states of the bistable system are derived in the parabolic approximation and in the general case.

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“…The real surfaces are energetically heterogeneous and this fact should be considered in the theoretical description of any adsorption process. Models assuming energetic heterogeneity of surface have been successfully applied to described gas adsorption on solids (Rudzinski and Everett 1992), molecules adsorption from solution (Podkościelny and Nieszporek 2007) and ion adsorption from electrolyte solutions on metal oxides (Rudzinski et al 1998).…”

Section: Introductionmentioning

confidence: 99%

The influence of surface energetic heterogeneity on electrofluidic gating of a metal oxide surfaces

Piasecki

Charmas

2016

Adsorption

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We developed a theoretical model which describes the influence of the applied potential to the wall of an oxide nanochannel on the diffuse layer potential in the solution filling the nanopore. It was assumed that the surface of oxide is energetically heterogeneous and electrolyte ions from the solution can adsorb on channel walls. We performed calculations for two oxides: SiO 2 and Al 2 O 3 . It was found that energetically heterogeneous oxide surfaces strongly suppress gating potential. Moreover, taking into account ion adsorption considerably increased the electrokinetic potential and reduced the influence of applied potential on the electric double layer in the solution. The density of surface sites is the key parameter in the modeling of oxide nanochannels. Low density of surface hydroxyl groups significantly increases susceptibility on electrofluidic gating.

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Multilayer Adsorption on Heterogeneous Surfaces

Cited by 370 publications

References 80 publications

Comparison of different methods for characterizing multi-walled carbon nanotubes

Comparison of different methods for characterizing multi-walled carbon nanotubes

Adsorption-induced surface normal relaxation of a solid adsorbent

The influence of surface energetic heterogeneity on electrofluidic gating of a metal oxide surfaces

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