Chemical structure of nanosize copper wires in MCM-41

Hsin Liang Huang, H. Paul Wang, Y. L. Wei, Li Hsiung Tung

研究成果: Conference contribution

4 引文 斯高帕斯(Scopus)

摘要

X-ray absorption near edge structural (XANES) and X-ray absorption fine structural (EXAFS) spectroscopies have been used to study chemical structure of nanosize copper extracted in the channels of MCM-41. The component-fitted XANES spectra show that about 95% of copper are adsorbed on the surfaces of MCM-41 at 298 K. A small amount of nanosize CuO in MCM-41 is also found. The adsorbed copper (Cu(II)(ads)) in the channels of MCM-41 may be oxidized and form nanosize CuO as calcined at 573 and 923 K. By EXAFS, it is observed that the nanosize CuO in MCM-41 possesses a Cu-O bond distance of 1.97 Å with a coordination number (CN) of 2.6, indicating the existence of linear type Cu3O4 cluster. Interestingly, calcinations of the nanosize CuO in MCM-41 at 923 K has led to a formation nanowire-type CuO (in the channels of MCM-41) with a length of 50-100 nm and width of about 5-9 nm.

原文English
主出版物標題Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
發行者Trans Tech Publications
頁面1125-1128
頁數4
ISBN(列印)0878493786, 9780878493784
DOIs
出版狀態Published - 2008
事件Multi-functional Materials and Structures - International Conference on Multifunctional Materials and Structures - Hong Kong, P.R., China
持續時間: 2008 七月 282008 七月 31

出版系列

名字Advanced Materials Research
47-50 PART 2
ISSN(列印)1022-6680

Other

OtherMulti-functional Materials and Structures - International Conference on Multifunctional Materials and Structures
國家/地區China
城市Hong Kong, P.R.
期間08-07-2808-07-31

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

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