EXAFS study of adsorbed Cu(II) on fly ashes with different residual carbon contents

Chien Jung Lin, Juu-En Chang

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

This work studied the speciation of copper species adsorbed onto the surface of fly ash using X-ray absorption spectroscopy (XAS). Experimental results verified that the chemical bond between Cu(II) and the surface of the fly ash was Cu-O. The data set was optimally fitted into the two atomic shells: the first shell containing O atoms and the second shell containing Cu atoms. The extended X-ray absorption fine structure (EXAFS) data also show that, in the first shell, about 2.03-2.41 nearest oxygen atoms surround the center Cu atom with a Cu-O bond distance of 1.96-1.99 Å. The results further demonstrated that the bond distance slightly increased with an increasing carbon content of the fly ash.

原文English
頁(從 - 到)115-121
頁數7
期刊Chemosphere
46
發行號1
DOIs
出版狀態Published - 2002 四月 23

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

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