使用拉曼光谱学实时减少氧化石墨烯
Mohammed Alyami1, Satam Alotibi1, Ibrahim Olanrewaju Alade2
1Physics Department, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, 11942, Saudi Arabia.
概括
激光照射提供了一种快速,无毒的方法,用于将石墨烯氧化物 (GO) 减少为减少的石墨烯氧化物 (rGO). 这种现场技术可以为先进的电子和能源应用提供精确的微观rGO工程.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 频谱学是一种光谱学.
背景情况:
- 石墨烯氧化物 (GO) 需要降解为降解石墨烯氧化物 (rGO) 才能恢复其功能性质.
- 传统的减少方法可能是有毒的或缺乏空间控制.
研究的目的:
- 开发一种在现场激光照射方法,用于在拉曼光谱学过程中减少GO.
- 为了研究激光功率密度对GO减少和rGO特性的影响.
- 在微观尺度上演示空间控制的rGO形成.
主要方法:
- 在Raman光谱测量过程中对GO进行现场激光照射.
- 激光功率密度从3.2×105到3.2×106W/cm2 (2.5-25mW) 不同.
- 使用光学显微镜和拉曼光谱分析 (分解为D,D,D′′,G,D′波段) 监测结构变化.
主要成果:
- 激光功率密度直接影响GO减少,更高的功率产生更好的结果.
- 观察到强度比ID/IG (0.12到0.42) 和面积比AD/AD的增加.
结论:
- 激光诱导的减少是一种快速,无毒和空间精确的方法,用于将GO转换为rGO.
- 这种技术可以对rGO进行微量工程.
- 开发的方法适用于灵活电子和储能领域的应用.
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01:20Raman Spectroscopy: Overview
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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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01:26Raman Spectroscopy Instrumentation: Overview
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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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