Cr local environment by valence-to-core X-ray emission spectroscopy
Cr local environment by valence-to-core X-ray emission spectroscopy
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DOI：
10.1039/b808345m
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发表时间：
2009-01-01
影响因子：
3.4
通讯作者：
Glatzel, Pieter
中科院分区：
文献类型：
--
作者：
Eeckhout, Sigrid G.;Safonova, Olga V.;Glatzel, Pieter
测量了多种铬化合物（如氧化物、碳化物、硼化物、氮化物、磷化物等）的价核X射线发射光谱。实验光谱与计算光谱吻合良好。它们构成了详细分析 Cr 第一配位层的基础。两个截然不同的例子说明了该技术在材料化学和环境科学中的独特应用。在前一种情况下，电化学沉积的非晶铬涂层的整体结构中存在 Cr-C 键，这一点得到了证实。在后一种情况中，我们表明受污染的土壤样本很可能含有人为来源的铬碳化物和/或磷化物。
Valence-to-core X-ray emission spectra have been measured for a number of chromium compounds such as oxides, carbides, borides, nitrides, phosphides etc. The experimental spectra are in good agreement with the calculated ones. They form the basis for a detailed analysis of the first coordination shell of Cr. The unique application of this technique for material chemistry and environmental science is illustrated by two very different examples. In the former case the presence of Cr-C bonds in the bulk structure of electrochemically deposited amorphous chromium coatings was confirmed. In the latter one we have shown that a contaminated soil sample most probably contains Cr carbides and/or phosphides from anthropogenic origin.