Catalytic activity of clay from tidal flat sediments in the decomposition of perchloroethylene by gamma-rays

Hung Ho Chung, Jinho Jung, Jeong Hyo Yoon, Myun Joo Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)


In the decomposition of perchloroethylene (PCE) by gamma-rays, clay from tidal flat sediments showed an efficient catalytic activity. Moreover, the clay thermally treated at 700 °C in air enhanced the PCE removal efficiency better than that of the well known catalyst Degussa P-25 TiO2. The change of the clay by the thermal treatment was identified by electron paramagnetic resonance (EPR) spectroscopy. The intensity of the signal that arises from the natural radiation defect was decreased with increasing thermal treatment temperature, and inversely dependent on the PCE removal efficiency.

Original languageEnglish
Pages (from-to)247-248
Number of pages2
JournalCatalysis Letters
Issue number3-4
Publication statusPublished - 2001 Dec 1
Externally publishedYes



  • Clay
  • EPR
  • Gamma-rays
  • PCE
  • TiO

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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