碳纳米管
拉曼光谱
碳纤维
材料科学
生物量(生态学)
纳米技术
光谱学
化学工程
复合材料
光学
物理
生物
工程类
生态学
量子力学
复合数
作者
Peng Zhang,Jingyuan Fan,Yuanqing Wang,Yuying Dang,Saskia Heumann,Yuxiao Ding
出处
期刊:Carbon
[Elsevier]
日期:2024-02-01
卷期号:: 118998-118998
标识
DOI:10.1016/j.carbon.2024.118998
摘要
Raman spectroscopy can effectively detect disorder in carbon materials through defect-activated peaks. However, distinguishing between different defect species in carbon using Raman spectroscopy is often challenging, leading to potentially misleading attributions, particularly in the case of carbon materials containing a significant number of amorphous components. In this study, we provide a comprehensive analysis of in-situ Raman spectra from commercially available carbon nanotubes (CNTs) with various defects during its annealing treatment process. Through the in-situ removal of different oxygen functional groups and H atoms during annealing treatment of CNTs, we track and discuss dynamic surface changes to unveil their impact on the Raman spectra. Furthermore, we examine the complex influence of amorphous components using biomass-derived carbon as a model for amorphous carbon, shedding light on their contributions to Raman spectra. We also consider Raman signals stemming from molecular vibrations in the same spectral regions. By thoroughly understanding the fundamental effects of different types of defects on the two specific carbon models, we try to give some inspirations for analyzing different carbon materials by Raman spectroscopy with high reliability and validity.
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