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Preparation of metal oxide doped ACNFs and their adsorption performance for low concentration SO2

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Abstract

Metal oxide (TiO2 or Co3O4) doped activated carbon nanofibers (ACNFs) were prepared by electrospinning. These nanofibers were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunner-Emmett-Teller method (BET). The results show that the average diameters of ACNFs were within the range of 200–500 nm, and the lengths were several tens of micrometers. The specific surface areas were 1146.7 m2/g for TiO2-doped ACNFs and 1238.5 m2/g for Co3O4-doped ACNFs, respectively. The electrospun nanofibers were used for adsorption of low concentration sulfur dioxide (SO2). The results showed that the adsorption rates of these ACNFs increased with an increase in SO2 concentration. When the SO2 concentration was 1.0 μg/mL, the adsorption rates of TiO2-doped ACNFs and Co3O4-doped ACNFs were 66.2% and 67.1%, respectively. The adsorption rate also increased as the adsorption time increased. When the adsorption time was 40 min, the adsorption rates were 67.6% and 69.0% for TiO2-doped ACNFs and Co3O4-doped ACNFs, respectively. The adsorption rate decreased as the adsorption temperature increased below 60°C, while it increased as the adsorption temperature increased to more than 60°C.

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Authors and Affiliations

  1. College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian, 116028, China

    Hong-quan Yu, Yan-bo Wu, Tie-ben Song, Yue Li & Yu Shen

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Correspondence to Hong-quan Yu.

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Yu, Hq., Wu, Yb., Song, Tb. et al. Preparation of metal oxide doped ACNFs and their adsorption performance for low concentration SO2 . Int J Miner Metall Mater 20, 1102–1106 (2013). https://doi.org/10.1007/s12613-013-0840-2

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  • DOI: https://doi.org/10.1007/s12613-013-0840-2

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