Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy

碩士 === 淡江大學 === 物理學系 === 89 === X-ray absorption near edge structure (XANES) measurements have been performed to investigate the local electronic structures of the Fe catalyzed and stabilized carbon nanotubes (CNT) with various diameters. The intensities of the π*- and σ*-band and the int...

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Main Authors: C. L. Yueh, 葉承霖
Other Authors: Way-Faung Pong
Format: Others
Language:zh-TW
Published: 2001
Online Access:http://ndltd.ncl.edu.tw/handle/89894781743557323302
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spelling ndltd-TW-089TKU001980032015-10-13T12:10:01Z http://ndltd.ncl.edu.tw/handle/89894781743557323302 Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy 由X光吸收光譜探討以Fe當催化層奈米碳管之電子結構 C. L. Yueh 葉承霖 碩士 淡江大學 物理學系 89 X-ray absorption near edge structure (XANES) measurements have been performed to investigate the local electronic structures of the Fe catalyzed and stabilized carbon nanotubes (CNT) with various diameters. The intensities of the π*- and σ*-band and the interlayer-state features in the C K-edge XANES spectra of these CNTs vary with the diameter of the CNT. The white-line features at the C K- and Fe L3-edges suggest a strong hybridization between the C 2p and Fe 3d orbitals which lead to enhancement of the C K- and reduction of the Fe L3-edge features, respectively, indicative of a charge transfer from C 2p to Fe 3d orpitals. The Fe K-edge spectra reveal a p-d rehybridization effect that reduces p-orbital occupation at the Fe site. Way-Faung Pong 彭維鋒 2001 學位論文 ; thesis 60 zh-TW
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language zh-TW
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sources NDLTD
description 碩士 === 淡江大學 === 物理學系 === 89 === X-ray absorption near edge structure (XANES) measurements have been performed to investigate the local electronic structures of the Fe catalyzed and stabilized carbon nanotubes (CNT) with various diameters. The intensities of the π*- and σ*-band and the interlayer-state features in the C K-edge XANES spectra of these CNTs vary with the diameter of the CNT. The white-line features at the C K- and Fe L3-edges suggest a strong hybridization between the C 2p and Fe 3d orbitals which lead to enhancement of the C K- and reduction of the Fe L3-edge features, respectively, indicative of a charge transfer from C 2p to Fe 3d orpitals. The Fe K-edge spectra reveal a p-d rehybridization effect that reduces p-orbital occupation at the Fe site.
author2 Way-Faung Pong
author_facet Way-Faung Pong
C. L. Yueh
葉承霖
author C. L. Yueh
葉承霖
spellingShingle C. L. Yueh
葉承霖
Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
author_sort C. L. Yueh
title Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
title_short Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
title_full Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
title_fullStr Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
title_full_unstemmed Electronic structures of the Fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
title_sort electronic structures of the fe-layer catalyzed carbon nanotubes studied by x-ray-absorption spectroscopy
publishDate 2001
url http://ndltd.ncl.edu.tw/handle/89894781743557323302
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