Adsorption of Dicamba herbicide onto a carbon replica obtained from a layered double hydroxide

Autor(es)

Pinto, M. C. E. ^[1] ; Santos, R. M. M. ^[1] ; Goncalves, R. G. L. ^[1] ; Duarte, V. G. O. ^[1] ; Borges, P. D. ^[1] ; Leroux, F. ^[2] ; Constantino, V. R. L. ^[3] ; Izumi, C. M. S. ^[4] ; Pinto, F. G. ^[1] ; Tronto, J. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Vicosa, Inst Ciencias Exatas & Tecnol, Campus Rio Paranaiba, Rodovia BR 354 Km 310, BR-38810000 Rio Paranaiba, MG - Brazil

^[2] Univ Clermont Auvergne UCA, Inst Chim Clermont Ferrand ICCF, BP 10448, F-63000 Clermont Ferrand - France

^[3] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil

^[4] Univ Fed Juiz de Fora, Dept Quim, Rua Jose Lourenco Kelmer S-N, BR-36036900 Juiz De Fora, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: DALTON TRANSACTIONS; v. 47, n. 9, p. 3119-3127, MAR 7 2018.
• Citações Web of Science: 2

Resumo

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. (AU)

• Processo FAPESP: 15/23410-5 - Hidróxidos duplos lamelares à base de cobre para produção de hidrogênio e outros produtos de valor agregado
• Beneficiário: Rodrigo Morais Menezes dos Santos
• Modalidade de apoio: Bolsas no Brasil - Doutorado