期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 267, 期 -, 页码 181-184出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2018.03.027
关键词
Polystyrene foam; Activated carbon; Microporous carbon; Adsorption; Methylene blue
类别
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) - Brazil [400714/2014-0]
- CAPES
- CNPq
- Ministerio de Economia, Industria y Competitividad [MAT2016-77114-R]
- Principado de Asturias (Fondo Europeo de Desarrollo Regional) (GRUPIN) [14-118]
Activated carbons (AC) with excellent textural properties have been obtained for the first time from waste polystyrene foam (PF), without any previous treatment, following a simple and conventional two-step procedure (formation of char followed by chemical activation). Even considering that the PF is not a graphitizable material, the best AC produced from this precursor has a very high BET surface area larger than 2700 m(2) g(-1) and a pore volume of 1.2 cm(2) g(-1), with a significant contribution of small mesopores. As a consequence, this AC reveals a surprising capacity to adsorption of relatively large molecules and a high specific capacitance when applied as a supercapacitor electrode. The maximum amount of adsorbed methylene blue obtained by batch equilibrium experiments are greater than 1 g g(-1) In the context of the technical difficulties and low economic return of the reuse and recycling of waste PF, this work offers a strategic destination for this environmentally unfriendly residue.
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