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2000
Volume 7, Issue 1
  • ISSN: 2405-5204
  • E-ISSN: 2405-5212

Abstract

Surface-modified activated carbon fibers (ACFs) with nitrogen-containing groups were prepared by the heat treatment of ACFs with urea, and characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetry (TG). The removal activity of the samples was also tested at an SO2 concentration of 22800 mg/Nm3. The results showed that the surface-modified ACFs significantly improved the SO2-removal ability compared to the unmodified ones. The amount of C=O and the nitrogen-containing groups on the surface of the N-modified ACFs increased, resulting in improved SO2-removal ability. The sample prepared with a urea concentration of 0.15 g/ml showed the best SO2-removal performance.

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/content/journals/rice/10.2174/2211334707666150115215545
2015-06-01
2025-02-21
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/content/journals/rice/10.2174/2211334707666150115215545
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