title: Growth of carbon structures on chrysotile surface for organic contaminants removal from wastewater.
abstract: Amphiphilic magnetic composites were produced based on chrysotile mineral and carbon structures by chemical vapor deposition at different temperatures (600-900 °C) and cobalt as catalyst. The materials were characterized by elemental analysis, X-ray diffraction, vibrating sample magnetometry, adsorption and desorption of N2, Raman spectroscopy, scanning electronic microscopy, and thermal analysis showed an effective growth of carbon structures in all temperatures. It was observed that at 800 and 900 °C, a large amount of carbon structures are formed with fewer defects than at 600 and 700 °C, what contributes to their stability. In addition, the materials present magnetic phases that are important for their application as catalysts and adsorbents. The materials have shown to be very active to remove the oil dispersed in a real sample of emulsified wastewater from biodiesel production and to remove methylene blue by adsorption and oxidation via heterogeneous Fenton mechanism.
authors.affiliation: Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil.
authors.forename: Bruno R S
authors.initials: BRS
authors.lastname: Lemos
authors.affiliation: Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil.
authors.forename: Érico A R
authors.initials: ÉAR
authors.lastname: Soares
authors.affiliation: Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil.
authors.forename: Ana Paula C
authors.initials: APC
authors.lastname: Teixeira
authors.affiliation: Laboratório de Física Aplicada, Centro de Desenvolvimento da Tecnologia Nuclear - CDTN/CNEN, MG, 31270-901, Brazil.
authors.forename: José D
authors.initials: JD
authors.lastname: Ardisson
authors.affiliation: Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
authors.forename: Luis E
authors.initials: LE
authors.lastname: Fernandez-Outon
authors.affiliation: Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Minas Gerais, Belo Horizonte, MG, 31270-901, Brazil.
authors.forename: Camila C
authors.initials: CC
authors.lastname: Amorim
authors.affiliation: Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil.
authors.forename: Rochel M
authors.initials: RM
authors.lastname: Lago
authors.affiliation: Departamento de Química, Universidade Federal de Minas Gerais, Belo Horizonte, 31270-901, Brazil. Electronic address: flaviamoura@ufmg.br.
authors.forename: Flávia C C
authors.initials: FCC
authors.lastname: Moura
mesh_terms: D000327:Adsorption; D017632:Asbestos, Serpentine / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D002384:Catalysis; D008751:Methylene Blue / Q000737:chemistry; D010084:Oxidation-Reduction; D013059:Spectrum Analysis, Raman; D013499:Surface Properties; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014961:X-Ray Diffraction
chemical_list: D017632:Asbestos, Serpentine; D002244:Carbon; D008751:Methylene Blue; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Adsorption; Amphiphilic material; Carbon structures; Chrysotile; Oxidation