中华医学超声杂志

应用化学 ›› 1991, Vol. 0 ›› Issue (5): 1-5.

• 研究论文 •    下一篇

杂多酸PMo12-xVx和PMo12-xWx的XPS研究 Ⅱ.氧的双电离能及轫致辐射诱导的磷、钼俄歇谱

胡刚, 于亚莉   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-02-05 修回日期:1990-12-14 出版日期:1991-10-10 发布日期:1991-10-10

X-RAY PHOTOELECTRON SPECTROSCOPY OF P-Mo AND P-W-HETEROPOLYACIDS Ⅱ.DOUBLE IONIZATION ENERGY OF OXYGEN AND BREMSSTRAHLUNG-INDUCED AUGER SPECTRA OF PHOSPHORUS AND MOLYBDENUM

Hu Gang, Yu Yali   

  1. Changchun, Institute of Applied Chemstry, Academia Sinica, Changchun 130022
  • Received:1990-02-05 Revised:1990-12-14 Published:1991-10-10 Online:1991-10-10

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摘要： 利用式EⅡ(min)=EB(K)-Ei(L23+L23+)可以从OKL23L23价态型俄歇跃迁能量求出氧的双电离能,它与杂多酸的Bronsted质子酸有一定的对应关系。本文利用铝靶的轫致辐射诱导MoL3M45M45和PKL23L23俄歇跃迁,实现了在一个阳极和同一次实验情况下,既测得Mo、P特征的电光电子峰,又记录了高动能的俄歇峰。Mo、P的俄歇谱可表明杂原子与杂多配位原子的关系。

关键词: 磷钼杂多酸, 氧的双电高能, 轫致辐射诱导俄歇谱, X-射线光电子能谱

Abstract: The bremsstrahlung induced Auger lines of kinetic energy of 1500～2500 eV were recordedby X-ray photo-electron spectroscopy.The principal photo-electron lines as well as the P andMo Auger lines of the heteropolyacids (HPA) were observed by bremsstrahlung radiation inone experiment at a same anode and with conventional Al-target.Although the intensitiesof the bremsstrahlung induced Auger lines are rather low, the signal to background ratiofor Mo L3M45M45 line is similar to that for Mo 3p1/2 in photoelectron spectra owingto the low values of the background at high energy rigion.From KL23L23 Auger transitionof oxygen in HPA, the minimum energy for double electron removal can be obtained accor-ding to E11 (min) = EB(k)-Ei (L23+L23+).

Key words: phosphorus-molybdemum heteropolyacid, double ionization energy of oxy gen, bremsstrahlung-induced Auger transition, X-ray photoelectron spectroscopy

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