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yuzhejun1984木虫 (小有名气)
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[交流]
XPS中N的binding energy
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| 请问各位，氰基（-CN）的N的binding energy在什么位置？N2等离子体处理物体表面产生哪些基团？有文献的话最好，麻烦推荐下，先谢谢了。 |
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qiuyf-2007
木虫 (正式写手)
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★ ★
yuzhejun1984(金币+2,VIP+0):你给出的结果跟我看到的一些相关文献有出入（我看到的N在398.4eV），还有你推荐的文献找不到（你写的参考文献格式能否详细点），但还是谢谢你。 9-15 11:03
yuzhejun1984(金币+2,VIP+0):你给出的结果跟我看到的一些相关文献有出入（我看到的N在398.4eV），还有你推荐的文献找不到（你写的参考文献格式能否详细点），但还是谢谢你。 9-15 11:03
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氰基（-CN）的N的binding energy 大概在400.8 eV 左右。N2等离子体处理物体表面产生基团有(N)i or (NO)O and (NO)i or (NO2)O, respectively. (N)i is an interstitial N in the middle of the interstitial space; (NO)O is NO sits at the substitutial site for the lattice O; at the same, (NO)i and (NO2)O are the interstitial NO and NO2 sits at the substitutial site for the lattice O. 文献： R. Asahi, T. Morikawa Chem. Phys. 2007, 339, 57. |
2楼2009-09-14 22:06:16
qiuyf-2007
木虫 (正式写手)
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3楼2009-09-16 22:09:59
qiuyf-2007
木虫 (正式写手)
- 博学EPI: 1
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★ ★ ★ ★ ★
yuzhejun1984(金币+5,VIP+0):谢谢 9-20 12:39
yuzhejun1984(金币+5,VIP+0):谢谢 9-20 12:39
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Nitrogen complex species and its chemical nature in TiO2 for visible-light sensitized photocatalysis Ryoji Asahi, a, and Takeshi Morikawaa aToyota Central R&D Laboratories Inc., Nagakute, Aichi 480-1192, Japan Received 8 May 2007; accepted 23 July 2007. Available online 8 August 2007. Abstract A photocatalyst with high reactivity under visible-light has been desired to utilize solar irradiation or interior lighting efficiently. Nitrogen-doped TiO2 revealed significant improvement in optical absorption and photocatalytic activity over TiO2 under visible light. We have performed the first-principles calculations to study the detailed N complex species introduced in TiO2. The results include stable geometries, densities of states, formation energies, and core levels. The present systematic studies account for the long-term controversial issue on N-doped TiO2, in particular, regarding the detailed assignment of N 1s binding energies observed in the XPS measurement. The detailed analyses of the formation energies show that introducing the N species more in a controlled way via process conditions is crucial to achieve the optimized photocatalytic performance. Keywords: Photocatalysis; Titanium dioxide; Firt principles calculation; Nitrogen; Doping; X-ray photoemission spectroscopy |
4楼2009-09-16 22:14:50
qiuyf-2007
木虫 (正式写手)
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5楼2009-09-16 22:15:21