Journal
DALTON TRANSACTIONS
Volume 47, Issue 9, Pages 3119-3127Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt03720a
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Funding
- Coordination of Improvement of Higher Education Personnel (CAPES)
- Minas Gerais State Research Foundation (FAPEMIG) [APQ-00706-11, APQ-01283-14]
- Sao Paulo Research Foundation (FAPESP) [2015/23410-5]
- National Council for Scientific and Technological Development (CNPq)
- FAPEMIG [CEX-RED-00010-14]
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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), thermo-gravimetric analysis coupled with differential scanning calorimetry and mass spectrometry (TGA-DSC-MS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), Raman spectroscopy, N-2 adsorption/desorption and zeta potential analysis. The CR-LDH sample presents a very high specific surface area (2345 m(2) 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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