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A feasibility study of “range-extended” EXAFS measurement at the Pt L3-edge of Pt/Al2O3 in the presence of Au2O3†
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2017-10-27 00:00:00 , DOI: 10.1039/c7ja00309a
Hiroyuki Asakura 1, 2, 3, 4, 5 , Naomi Kawamura 5, 6, 7 , Masaichiro Mizumaki 5, 6, 7 , Kiyofumi Nitta 5, 6, 7 , Kenji Ishii 5, 7, 8, 9 , Saburo Hosokawa 1, 2, 3, 4, 5 , Kentaro Teramura 1, 2, 3, 4, 5 , Tsunehiro Tanaka 1, 2, 3, 4, 5
Affiliation  

A feasibility study of a “range-extended” EXAFS measurement was conducted on the Pt L3-edge of Pt/Al2O3 in the presence of Au2O3. The Pt L3-edge EXAFS spectrum of the Pt/Al2O3 sample was successfully obtained without any interference at the Au L3-edge by means of high energy resolution fluorescence detection (HERFD) of the Pt Lα1 line with a Bragg type X-ray emission analyser crystal. A newly observed significant enhancement of the EXAFS oscillation amplitude was discussed on the points of the core-hole lifetime width and X-ray energy width. We also successfully obtained reasonable physical parameters by a conventional EXAFS curve fitting on the HERFD-EXAFS data. The HERFD-EXAFS technique can broaden the scope of application of EXAFS spectroscopy for complicated samples with many different elements.

中文翻译:

在铂升“范围扩展” EXAFS的测量的可行性研究3的Pt /铝的_edge时2 ö 3中Au的出现2 ö 3

在Au 2 O 3存在的情况下,对Pt / Al 2 O 3的Pt L 3边缘进行了“范围扩展” EXAFS测量的可行性研究。将Pt大号3在Pt / Al的的边缘EXAFS光谱2 ö 3而不在金L所有干扰被成功得到的试样3中利用PtLα的高能量分辨率荧光检测(HERFD)的手段_edge时1配有布拉格型X射线发射分析仪晶体。从岩心孔寿命宽度和X射线能量宽度的角度讨论了新观察到的EXAFS振荡幅度的显着增强。我们还通过对HERFD-EXAFS数据进行常规EXAFS曲线拟合,成功获得了合理的物理参数。HERFD-EXAFS技术可以拓宽EXAFS光谱学在具有许多不同元素的复杂样品中的应用范围。
更新日期:2017-10-27
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