Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Heavy Metal Adsorption of Activated Carbon Fibers with Chelating Groups

킬레이트 관능기가 도입된 활성탄소섬유의 중금속 흡착

  • Park, Soo-Jin (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Shim, Gyu-Hong (Advanced Materials Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Hak-Yong (Department of Textile Engineering, Chonbuk National University)
  • 박수진 (한국화학연구원 화학소재연구부) ;
  • 심규홍 (한국화학연구원 화학소재연구부) ;
  • 김학용 (전북대학교 섬유공학과)
  • Published : 2005.04.01
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Abstract

In this work, the heavy metal ion adsorption behavior of activated carbon fibers (ACFs) containing chelating functional groups were studied. The ACFs were modified by fluorination and glycidyl methacrylate (GMA) graft polymerization in order to introduce chelating functional groups, such as iminodiacetate (IDA) groups, on the carbon surfaces. Fourier transform-infrared spectrometry (FT-IR) and X-ray photoelectron spectroscopy (XPS) were used for the analysis of surface properties of the ACFs. Specific surface area was calculated from Brunauer-Emmett-Teller (BET) equation for $N_{2}$ adsorption at 77 K. In the result of XPS, the relative intensity of oxygen peaks increased with increasing treatment times of fluorination, indicating that surface oxidation occurred due to the increased treatment time of fluorination, in spite of decrease in specific surface area by pore blocking. However, the adsorption of the heavy metal ion significantly increased with increasing treatment time of fluorination. It was understood that the IDA groups of the fluorinated ACF surfaces were introduced by GMA graft polymerization and the IDA groups led to an increase in the adsorption of heavy metal ions.

Keywords

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