Modelling VA-CNT surface morphology for pollutant adsorption from aqueous media.

ABSTRACT: The absorption of organic dyes from aqueous medium by vertically aligned carbon nanotubes (VA-CNTs) is an ongoing research topic, as these nanostructures present outstanding physical and chemical properties that may favor their interaction with organic pollutants. The growth temperature variation yields different VA-CNT surface morphologies ranging from wave-like patterns to patternless or planar patterns. Here, we demonstrate the effect of the interaction between the intrinsic oxygen concentration of the VA-CNTs grown at different temperatures (650 °C and 700 °C) on the adsorption of cationic (Rhodamine B - RhB) and anionic (Methyl Orange - MO) dyes from aqueous media through UV-vis spectrophotometry studies. The XPS technique was applied to estimate the oxygen percentage (O at%) present

SUBMITTER: Oliveira IE 

PROVIDER: S-EPMC11788671 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature