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纳米碳管因其特殊的结构和性能引起了人们极大的关注,它是当今材料学学界研究的热点之一.为了探讨自然界中纳米碳管的特征及其形成机制,对新疆苏吉泉石墨化花岗岩所含团块状石墨进行了扫描探针显微镜和Raman光谱分析,分析表明,其中存在三角形碳矿物,三边均为碳管,边长为1.5~2.0μm,宽度为0.15~0.5μm,长宽比为4∶1~10∶1,且呈60°夹角;一级拉曼光谱出现1355 cm-1、1357 cm-1和1578 cm-1、1580 cm-1特征峰,说明该矿物的石墨化程度很高;二级拉曼光谱2721 cm-1为单峰,没有分裂峰和肩峰,说明了天然纳米碳管的低维晶格.
Due to its special structure and properties, carbon nanotubes have drawn much attention, which is one of the hot topics in the field of materials science.In order to explore the characteristics and formation mechanism of carbon nanotubes in nature, The agglomerated graphite contained in granite was analyzed by scanning probe microscopy and Raman spectroscopy. The analysis showed that there are triangular carbon minerals on both sides and carbon nanotubes on both sides with a side length of 1.5-2.0 μm and a width of 0.15-0.5 μm. Width ratio of 4: 1 to 10: 1, and an angle of 60 °. The primary peak of 1355 cm-1, 1357 cm-1 and 1578 cm-1, 1580 cm-1 appears in the primary Raman spectrum, The degree of graphitization is very high. The second-order Raman spectroscopy at 2721 cm-1 shows a single peak without splitting peaks and shoulders, indicating the low-dimensional lattice of natural carbon nanotubes.