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Updated: Feb 15, 2026

Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures
Published on: July 2, 2012
Adsorption of Dicamba herbicide onto a carbon replica obtained from a layered double hydroxide
M C E Pinto1, R M M Santos, R G L Gonçalves
1Universidade Federal de Viçosa, Instituto de Ciências Exatas e Tecnológicas, Campus de Rio Paranaíba, Rodovia BR 354 km 310, CEP 38810-000, Rio Paranaíba - MG, Brazil. jairotronto@ufv.br.
Abstract:
In this work, a carbon replica derived from a vinylbenzenesulfonate-intercalated layered double hydroxide (CR-LDH) was applied to remove the Dicamba organochlorine herbicide from aqueous solution. The samples were characterized by several experimental techniques such as X-ray diffraction (XRD), thermogravimetric analysis coupled with differential scanning calorimetry and mass spectrometry (TGA-DSC-MS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Raman spectroscopy, N2 adsorption/desorption and zeta potential analysis. The CR-LDH sample presents a very high specific surface area (2345 m2 g-1). The adsorption experiment typically followed the Langmuir isotherm model and the adsorption kinetics was best fitted with a pseudo second-order model. The maximum adsorption capacity of Dicamba herbicide onto CR-LDH was 279 mg g-1. CR-LDH presented a higher adsorption capacity than other carbon adsorbent materials reported in the literature.
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