Speciation of copper in micropores

Y. J. Huang, H. Paul Wang, M. C. Hsiao, C. C. Tai, Hsin Liang Huang, S. H. Liu

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)


Speciation of copper in the micropores of zeolites and a contaminated soil was studied by extended X-ray absorption fine structural (EXAFS) spectroscopy. The Fourier transformed EXAFS data showed that copper oxide in zeolites ZSM-5 and ZSM-48 possessed a Cu-O bond distance of 1.95 Å with coordination numbers (CNs) of 1-2. Since ZSM-5 and ZSM-48 possessed channel openings of 5-6 Å, the possible sizes of the linear-type copper oxides in these confined pores were 2.93-2.95 Å. However, in the supercages (∼13 Å) and channels (7.4 Å) of zeolite Y, a three dimensional structure of CuO was observed. Interestingly, we found that CuO in the Cu-contaminated soil had a similar structure to that in ZSM-5 or ZSM-48. Nevertheless, the EXAFS data indicated that the CNs of Cu-O and Cu-O-Cu were 0.4 and 0.3, respectively, suggesting a highly perturbed copper oxide in the irregular micropores of the contaminated soil.

頁(從 - 到)187-194
期刊Water, Air, and Soil Pollution
出版狀態Published - 2004 3月

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 環境化學
  • 生態建模
  • 水科學與技術
  • 污染


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