Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21653
Tipo: Artigo
Título: Mesoporous carbon derived from a biopolymer and a clay: preparation, characterization and application for an organochlorine pesticide adsorption
Autor(es): Pinto, Marina de Carvalho Eufrásio
Gonçalves, Rosembergue Gabriel Lima
Santos, Rodrigo Morais Menezes dos
Araújo, Emiliane Andrade
Perotti, Gustavo Frigi
Macedo, Rafael dos Santos
Bizeto, Marcos Augusto
Constantino, Vera Regina Leopoldo
Pinto, Frederico Garcia
Tronto, Jairo
Abstract: The production of carbon-based materials is a field of intense scientific research due to the diversity of potential applications that this kind of material presents. In this paper, it is reported the synthesis of porous carbonaceous material (PCM) based on the pyrolysis at 850 °C of a composite made of Laponite (commercially available synthetic clay) and Cassava starch, followed by clay removal through acid digestion. The Laponite presence influenced the structural order and textural properties of the pyrolytic carbon formed. After pyrolysis and acid digestion of clay, it was obtained a material with a partial graphitic structure containing majorly sp^2 bounded carbon atoms, that has almost twice the specific surface area and up to 20 times more mesopore volume than the carbonaceous material obtained without the clay. The adsorbent potential of PCM was evaluated by adsorption of Dicamba, an organochlorine pesticide, from aqueous solutions. The PCM exhibits a high Dicamba removal efficiency, with a maximum adsorption capacity of 251.9 mg g^−1 related to a pseudo-second-order kinetic adsorption model with a strong pH dependence.
Palavras-chave: Porous materials
Carbonaceous materials
Starch
Laponite
Dicamba
Editor: Microporous and Mesoporous Materials
Tipo de Acesso: Elsevier Inc.
URI: https://doi.org/10.1016/j.micromeso.2016.01.012
http://www.locus.ufv.br/handle/123456789/21653
Data do documento: 1-Mai-2016
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