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@InProceedings{AmaralJúniorMaFeReBaMa:2015:PrChAc,
               author = "Amaral J{\'u}nior, Miguel Angelo do and Matsushima, Jorge Tadao 
                         and Ferreira, Neiden{\^e}i Gomes and Rezende, Mirabel Cerqueira 
                         and Baldan, Maur{\'{\i}}cio Ribeiro and Marcuzzo, Jossano 
                         Saldanha",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Universidade Federal de S{\~a}o 
                         Paulo (UNIFESP)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Production and characterization of activated carbon fibers from 
                         brazilian textile PAN",
                 year = "2015",
         organization = "Materials Research Society: Fall Meeting",
             abstract = "Carbon fibers (CF) are lightweight materials and are associated to 
                         excellent mechanical properties, high thermal and electrical 
                         conductivity and low thermal expansion coefficient. These 
                         characteristics have been attracted attention of many research 
                         groups in different science field and application [1-5]. One of 
                         the most applications used for CF is the activating. The activated 
                         carbon fibers (ACF) have an interesting adsorption capacity. The 
                         adsorption capacity is due to the ACF have well-defined pore 
                         structures which provide a high specific surface area in contrast 
                         with CF. ACF is one of the most widely used adsorbent materials 
                         around the world. Normally, ACF is used for the drinking and waste 
                         water treatment and in many other applications where the removal 
                         of generally dispersed contaminant molecules is desired [6]. The 
                         goal of this work was to produce inexpensive activated carbon 
                         fibers and characterization the fibers for future applications in 
                         metallic substance removal from water. In this work, the carbon 
                         fibers were produced from the carbonization of Brazilian textile 
                         polyacrylonitrile fiber. Carbon fiber were produced from PAN fiber 
                         oxidation in air (260°C) and carbonized in argon atmosphere at 
                         900°C. The activation process was performed immediately after 
                         carbonization by shifting the argon gas to CO2 and rising up the 
                         temperature to 1000°C during 50 min. The morphologies of activated 
                         and not activated carbon fiber were characterized by scanning 
                         electron microscope (SEM). The morphological surface analyze 
                         indicated the existence of pore on the surface of the ACF 
                         increasing the surface roughness and wetting ability. X-ray 
                         photoelectron spectroscopy (XPS) was used to measure presence of 
                         oxygen content on the fibers. It was observed by XPS a high 
                         intensity in the capture of the carbon electrons of the ACF this 
                         shown a significant reduction of oxygen in the ACF. Raman 
                         spectroscopy and X-ray diffractometer (XRD) were used to 
                         structural characterization. By using the Raman spectroscopy was 
                         possible to analyze fibers superficially while XRD analyzed more 
                         internal structures. The Raman spectrums were fitted in four 
                         Gaussian and one Lorentzian curve as reported in literature. The 
                         Raman results showed that the ACF presented an increase on D peak, 
                         which is linked to the disorganization of the graphitic structure. 
                         According to the DRX the CF had higher crystallites that the ACF, 
                         this decrease in crystallite was due to the surface tension during 
                         the activation process. These results are in according to the SEM 
                         and XPS results giving additional information about the influence 
                         of the activating for adsorption property of the ACF.",
  conference-location = "Boston, MA",
      conference-year = "29 Nov. - 04 Dec.",
        urlaccessdate = "01 dez. 2020"
}


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