球磨和HF浸出膨胀石墨的结构和形态表征

IF 16.4 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
S. Karimi, A. Heidarpour, S. Ghasemi
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引用次数: 0

摘要

在本研究中,采用简单的球磨工艺,然后采用氢氟酸(HF, 10 wt. %)浸出,成功制备了膨胀石墨(EG)。采用XRD和拉曼光谱研究了球磨时间(0 ~ 15 h)和浸出时间(1 ~ 24 h)对石墨剥离的影响。利用扫描电子显微镜(SEM)对膨胀石墨样品进行了形貌表征。球磨和HF处理样品的XRD结果表明,与前驱体和HF处理样品相比,膨胀石墨烯有轻微的峰移和(002)面展宽。此外,(002)平面的强度在球磨过程中显著降低,但在HF处理后保持不变。样品的拉曼光谱仅在hf处理的样品中证实了排序过程。随着HF处理时间的延长,2D1和2D2波段的强度比逐渐增大,达到5 h,表明HF溶液浸出后石墨层数减少
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Structural and Morphological Characterization of the Expanded Graphite Obtained by Ball Milling and HF Leaching
In this research, expanded graphite (EG) was successfully fabricated using a simple ball milling process followed by hydrofluoric (HF, 10 wt. %) leaching. The effect of ball milling time (0-15 h) and leaching time (1-24 h) on the exfoliation of graphite were examined by XRD and Raman spectroscopy. Furthermore, the morphological evaluation of the obtained expanded graphite samples was carried out by scanning electron microscopy (SEM). The XRD results of the ball-milled and HF treated samples showed a slight peak shift and broadening of (002) plane for expanded graphitein in comparison to the precursor and HF-treated samples. Moreover, the intensity of the (002) planes remarkably decreased by the ball milling process but remained constant after HF treatment. Raman spectra of the samples confirmed the ordering process only in HF-treated specimens. Moreover, the intensity ratio of 2D1 to 2D2 band gradually increased with enhancing the HF treatment time up to 5 hrs, indicating a decrement in the number of graphite layers by leaching in the HF solution
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来源期刊
Accounts of Chemical Research
Accounts of Chemical Research 化学-化学综合
CiteScore
31.40
自引率
1.10%
发文量
312
审稿时长
2 months
期刊介绍: Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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