Mass spectrometry of laser reduced graphene oxide in vacuum

IF 1.6 3区化学 Q3 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL

International Journal of Mass Spectrometry Pub Date : 2025-07-18 DOI:10.1016/j.ijms.2025.117494

L. Torrisi , A. Torrisi , M. Cutroneo

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Abstract

Graphene oxide (GO) foils were irradiated in high vacuum using an ns pulsed laser operating at 1064 nm and different fluences. Laser irradiation generates plasma and promotes the emission of carbon atoms and molecules, functional groups of oxygen, and absorbed gases, generating a surface GO reduction. The emitted particles have been monitored through a high-sensitivity mass quadrupole spectrometer operating between 1 amu and 300 amu.

The produced laser irradiation was investigated using low fluences, as well as the generated plasma.

The pristine and laser-irradiated GO were analyzed using different analysis techniques: Optical spectroscopy, time-of-flight measurements and mass spectrometry. The results obtained in previous experiments using other types of analyses were also cited.

Results demonstrated that under laser-irradiation graphene oxide loses different functional groups of oxygen becoming richer in sp² hybridized carbon content, enhancing its carbon content, and becoming more electrically conductive.

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真空中激光还原氧化石墨烯的质谱分析

在高真空条件下，利用波长为1064 nm的脉冲激光辐照氧化石墨烯（GO）薄膜。激光照射产生等离子体，促进碳原子和分子、氧官能团和吸收气体的发射，产生表面氧化石墨烯还原。发射的粒子通过高灵敏度的质量四极谱计进行监测，工作在1amu和300amu之间。研究了低影响下产生的激光辐照，以及产生的等离子体。使用不同的分析技术对原始氧化石墨烯和激光辐照氧化石墨烯进行了分析：光谱学、飞行时间测量和质谱分析。还引用了以前使用其他类型分析获得的实验结果。结果表明，在激光照射下，氧化石墨烯失去了不同官能团的氧，sp2杂化碳含量增加，碳含量提高，导电性能增强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Mass Spectrometry 物理-光谱学

CiteScore

3.60

自引率

5.60%

发文量

145

审稿时长

71 days

期刊介绍： The journal invites papers that advance the field of mass spectrometry by exploring fundamental aspects of ion processes using both the experimental and theoretical approaches, developing new instrumentation and experimental strategies for chemical analysis using mass spectrometry, developing new computational strategies for data interpretation and integration, reporting new applications of mass spectrometry and hyphenated techniques in biology, chemistry, geology, and physics. Papers, in which standard mass spectrometry techniques are used for analysis will not be considered. IJMS publishes full-length articles, short communications, reviews, and feature articles including young scientist features.