Abstract
The surface heterogeneity of the multiwalled carbon nanotubes is investigated on the basis of adsorption isotherms from dilute aqueous phenol solutions at various temperatures. The Dubinin–Astakhov...
Highlights
Adsorption at solid/solution interfaces plays essential role in a variety of technological processes applied in the protection of the environment
Theoretical studies were tested using the literature experimental adsorption data (Sheng et al, 2010). They included the data of phenol adsorption from aqueous solution on asprepared and oxidized Multiwalled carbon nanotubes (MWCNTs)
They included the data of phenol adsorption from aqueous solution on as-prepared and oxidized MWCNTs reported by Sheng et al (2010)
Summary
Adsorption at solid/solution interfaces plays essential role in a variety of technological processes applied in the protection of the environment. The interstitial channel space between the tubes within the bundles can be regarded as pores. Adsorption can occur (Shen et al, 2009; Sheng et al, 2010) on the external surfaces of the nanotubes, in the interstitial channels between nanotubes, in the hollow space inside nanotubes, and on the grooves present on the periphery of a nanotube bundle. The overall adsorption of phenols contains the contributions from the adsorption on the graphene surface and because of pore filling. Surface defects play a key role in the properties of the surface (Lehman et al, 2011). Above-mentioned heterogeneity of the surface generates the exceptional adsorption properties of MWCNTs
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