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Fabrication of nitrogen-doped porous carbon nanofibers for heavy metal ions removal

  • Carbon Letters
  • Abbr : Carbon Lett.
  • 2021, 31(6), pp.1339-1347
  • DOI : 10.1007/s42823-021-00291-w
  • Publisher : Korean Carbon Society
  • Research Area : Natural Science > Natural Science General > Other Natural Sciences General
  • Received : September 5, 2021
  • Accepted : October 4, 2021
  • Published : December 1, 2021

Bae Joonwon 1 Hong Jin-Yong 2

1동덕여자대학교 응용화학과
2한국화학연구원

Accredited

ABSTRACT

In this article, nitrogen (N) doped porous carbon nanofbers (N-PCNF) were prepared by carbonization of polymer-silica nanocomposite precursor, and its application for heavy metal ion removal was demonstrated. Carbon–silica composite nanofbers were obtained by carbonization of electrospun polyacrylonitrile (PAN)-silica nanofber composites. Subsequent selective etching of silica porogen produced porous carbon nanofbers (PCNF). It was revealed by surface characterization with X-ray photoelectron spectroscopy (XPS) that the surface of the PCNF was nitrogen-doped because N atom from cyanide group in PAN chains remained in the hexagonal carbon structure. The use of the obtained N-PCNF for heavy metal ion (Hg2+) removal was demonstrated using a simple adsorption test apparatus and 5, 10, 15, 20-tetraphenylporphine tetrasulfonic acid (TPPS) as an indicator. The N-PCNF showed a removal efciency of 96 and 99% in 10 and 120 min, respectively, indicating a maximum heavy metal ion adsorption capacity at pH 7.0. In addition, heavy metal ion adsorption behavior was also analyzed using common adsorption isotherms. This article provides important information for future research activities regarding control over hazardous substances.

Citation status

This is the result of checking the information with the same ISSN, publication year, volume, and start page between the WoS and the KCI journals. (as of 2023-07-13)

Total Citation Counts(KCI+WOS) (15) This is the number of times that the duplicate count has been removed by comparing the citation list of WoS and KCI.

Scopus Citation Counts (15) This is the result of checking the information with the same ISSN, publication year, volume, and start page between articles in KCI and the SCOPUS journals. (as of 2023-10-01)

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