中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Acoustic shock wave-induced sp2-to-sp3-type phase transition: a case study of a graphite single crystal

文献类型:期刊论文

作者Sivakumar Aswathappa; Lidong Dai; Simon A. T. Redfern; S. Sahaya Jude Dhas; Xiaolei Feng; Eniya Palaniyasane; Raju Suresh Kumar
刊名Journal of Materials Chemistry C
出版日期2024
卷号12期号:36页码:14581-14589
DOI10.1039/D4TC03216K
英文摘要

Achieving facile and simple temperature- and pressure-induced transformation of sp2-to-sp3 remains an important and fascinating challenge within the realm of carbon science and technology. Here, we introduce a new technique that utilizes repeated exposure of low-pressure (2.0 MPa) millisecond acoustic shock waves on a sample to facilitate the successful transformation of sp2-to-sp3 carbon bonds. This transformation is verified through visible Raman spectroscopic, X-ray photoelectron spectroscopic (XPS), and high-resolution transmission electron microscopic (HRTEM) observations. Typically, in general nanosecond dynamic compression experiments, sp3 carbon bond formation occurs only at pressures of ∼45 GPa or more, and under static compression, this transition takes place at ∼30 GPa. However, with our innovative approach, similar results can be achieved with acoustic shock waves operating at significantly lower pressures of 2.0 MPa. Based on the observed analytical results, the sp2-to-sp3 type phase transition occurred at the 500-shocked condition and this transition leads to the conversion of layered crystalline graphite to non-layered amorphous graphite, which may be the pre-state of sp3 bonded diamond formation. The complete disappearance of the 2D band in the Raman spectrum and the conversion of asymmetric to symmetric shape of the C 1s band in the XPS spectrum are the major proof for the proposed sp2-to-sp3 phase transition. Further optimization is currently underway to find the critical point in achieving the probable phase transition of graphite to diamond. The proposed technique put forward a platform for a new impending way to make the sp3 carbons from sp2 carbons in indoor laboratories, which may also offer a new science division to understand the formation of diamonds or diamond-like structures under lower transient pressure conditions. Even though the proposed technique is cost-effective and involves a handy tool, to move it from lab to industrial applications, we still have a lot of ground to cover in fundamental aspects.

 

 

 

 

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语种英语
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专题地球化学研究所_地球内部物质高温高压实验室
作者单位1.Key Laboratory of High-temperature and High-Pressure Study of the Earth's Interior, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou 550081, China
2.Asian School of the Environment and School of Materials Science and Engineering, Nanyang Technological University, Singapore – 639798, Singapore
3.School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore – 639798, Singapore
4.Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu 602105, India
5.Department of Physics, Periyar University, Salem, Tamilnadu 636011, India
6.Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
推荐引用方式
GB/T 7714
Sivakumar Aswathappa,Lidong Dai,Simon A. T. Redfern,et al. Acoustic shock wave-induced sp2-to-sp3-type phase transition: a case study of a graphite single crystal[J]. Journal of Materials Chemistry C,2024,12(36):14581-14589.
APA Sivakumar Aswathappa.,Lidong Dai.,Simon A. T. Redfern.,S. Sahaya Jude Dhas.,Xiaolei Feng.,...&Raju Suresh Kumar.(2024).Acoustic shock wave-induced sp2-to-sp3-type phase transition: a case study of a graphite single crystal.Journal of Materials Chemistry C,12(36),14581-14589.
MLA Sivakumar Aswathappa,et al."Acoustic shock wave-induced sp2-to-sp3-type phase transition: a case study of a graphite single crystal".Journal of Materials Chemistry C 12.36(2024):14581-14589.

入库方式: OAI收割

来源:地球化学研究所

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