Transition metal 2p x-ray photoelectron and high-resolution Kα x-ray emission spectra of K2CrO4 and KMnO4

Abstract

Chromium and manganese 2p x‐ray photoelectron spectra (XPS) were measured for K2CrO4 (potassium chromate) and KMnO4 (potassium permanganate) single crystals fractured in situ in an electron spectrometer. High‐resolution Cr and Mn Kα x‐ray emission spectra were taken for comparison with the XPS spectra. The observed XPS spectra were deconvoluted by O 1s spectra to remove the inelastic scattering energy loss parts from them. Satellite peaks in the deconvoluted Cr 2p and Mn 2p were not observed. The intensity ratios of 2p3/2 to 2p1/2 of the deconvoluted spectra of K2CrO4 and KMnO4 were 5:1 and 3.5:1, respectively. The ratios were significantly different from the theoretical photoionization cross‐sections of 1.93:1. The intensity ratio of Kα1 to Kα2 was about 2:1 for both compounds. Copyright © 1999 John Wiley & Sons, Ltd.

Intensity Ratio of Kβ/Kα in Selected Elements from Mg to Cu, and the Chemical Effects of Cr Kα1,2 Diagram Lines and Cr Kβ/Kα Intensity Ratio in Cr Compounds

“…Therefore, we used the values obtained by analyzing the observed data with asymmetric fitting, without any corrections for the instrument function. The present measurement results are in close agreement with previous ones [ 29 , 30 , 31 , 32 ], such as the asymmetry and large half-width of the peak in Oh-symmetric compounds [ 29 , 32 ], and the asymmetry and large half-width of the peak in Td-symmetric compounds [ 29 , 31 ]. In comparison with the results of [ 29 ] (Cr metal, K CrO , Cr O only) ( Table 5 ) on the energy shifts of and peaks with respect to the metal, they are qualitatively consistent in many aspects, such as the energy shifts of and , and the energy difference between and peaks.…”

Comparison of intrinsic zero-energy loss and Shirley-type background corrected profiles of XPS spectra for quantitative surface analysis: Study of Cr, Mn and Fe oxides

“…Then, it is reasonable to assume that W(x 0 ) in this study is considered to be the intrinsic zero-energy loss excitation spectrum [14,15]. The deconvolution method gives one peak having full width at half maximum of zero-energy loss peak of the ligand to one final energy level after photoemission as shown in the cases of 2p 3/2 XPS spectra for K 2 CrO 4 and for KMnO 4 [16]. As the d 0 compounds have no exchange splitting in 2p level, the final state after photoemission is only one.…”

Accelerating Catalytic Oxyanion Reduction with Inert Metal Hydroxides

“… (a) Cr 2p XPS spectra of the Cr VI reference (K 2 CrO 4 ) and the 5 wt % Cr–5 wt % Pd/C prepared from K 2 CrO 4 and K 2 Cr 2 O 7 . The Cr 2p peaks in the K 2 CrO 4 sample had minor tails originating from charge-up; 37 (b) Tyndall effect by colloids in aqueous KCr(SO 4 ) 2 solution (1 mg L –1 as Cr) at pH 7; (c) aqueous Cr concentration after adding KCr(SO 4 ) 2 (1 mg L –1 as Cr) into the Pd/C suspension and changing conditions; (d) HAADF-STEM imaging and EDS mapping of (e) C, (f) Pd, and (g) Cr of Cr–Pd/C prepared from KCr(SO 4 ) 2 . …”