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

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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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