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X-ray Photoelectron Spectroscopy as a Probe of Beam-Induced Surface Decomposition of 1-Octyl-3-Methylimidazolium Tribromide
Abstract
A systematic investigation of the beam-induced surface decomposition of a typical trihalide ionic liquid, 1-octyl-3-methylimidazolium tribromide, was conducted by X-ray photoelectron spectroscopy, and the electronic environment of the bromine region is discussed. The newly formed component was assigned to bromide, based on the measured Br 3d binding energy. The atomic loss of bromine as a function of exposure time under the X-ray beam is analyzed in detail. The analysis suggests that 1-octyl-3-methylimidazolium tribromide is decomposed under X-ray beam irradiation to yield 1-octyl-3-methylimidazolium bromide and liquid bromine, the latter of which subsequently leaves the system under the ultrahigh vacuum conditions.
Supporting agencies: This work is supported by the Basic Research Project of Colleges and Universities of Liaoning Provincial Department of Education (No. JYTMS20230194).
About the Authors
B. Liu
Shenyang Ligong University
China
China
Baojun Liu - School of Material Science and Engineering.
Shenyang
L. Wei
Shenyang Ligong University
China
China
Li Wei - School of Material Science and Engineering.
Shenyang
S. Men
Shenyang Ligong University
China
China
Shuang Men - School of Material Science and Engineering.
Shenyang
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Review
For citations:
Liu B., Wei L., Men S. X-ray Photoelectron Spectroscopy as a Probe of Beam-Induced Surface Decomposition of 1-Octyl-3-Methylimidazolium Tribromide. Zhurnal Prikladnoii Spektroskopii. 2025;92(4):556.
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