Effects of Coal Rank and Macerals on the Structure Characteristics of Coal-Based Graphene Materials from Anthracite in Qinshui Coalfield
Effects of Coal Rank and Macerals on the Structure Characteristics of Coal-Based Graphene Materials from Anthracite in Qinshui Coalfield
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煤阶和煤质对沁水煤田无烟煤煤基石墨烯材料结构特性的影响
DOI：
10.3390/min12050588
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发表时间：
2022-05
期刊：
影响因子：
2.5
通讯作者：
Min Dong
中科院分区：
文献类型：
--
作者：
Ruiqing Li;Yuegang Tang;Qili Che;Pengliang Ma;Peng Luo;Xin Lu;Min Dong
采用X射线衍射（XRD）、拉曼光谱、扫描电子显微镜-能谱仪（SEM-EDS）和高分辨透射电子显微镜（HRTEM）对沁水煤田13个煤样、煤基石墨和煤基石墨烯片进行了表征。结果表明，煤基石墨的石墨化度与原煤反射率呈线性正相关，与惰质组含量呈低度正相关，与原煤镜质组含量呈低度正相关。煤基石墨和石墨烯的微晶宽度（La）和微晶高度（Lc）与原煤的反射率呈正线性相关。煤基石墨的La和Lc分别分布在17.591-48.374 nm和11.359-23.023 nm之间。氧化还原后，煤基石墨烯的La和Lc分别分布在4.405 -6.243 nm和0.804-1.144 nm之间。煤基石墨烯的缺陷度（ID/IG）高于原煤、脱矿煤和煤基石墨。煤基石墨烯薄而透明，只含有碳和氧。结合XRD和HRTEM的参数，计算得到沁水煤基石墨烯的层间距（d 002）约为0.4007 nm，层数（Nave）约为5层。
Thirteen raw coal samples from Qinshui coalfield were prepared to produce coal-based graphene, and the raw coal, coal-based graphite, and coal-based graphene sheets (GS) were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy with energy dispersive spectrometer (SEM-EDS), and high-resolution transmission electron microscopy (HRTEM). The results show that the graphitization degree of coal-based graphite is positively linearly correlated with the reflectance of raw coal, has a low positive correlation with the content of inertinite, and has a low positive correlation with the content of vitrinite in raw coal. The crystallite width (La) and crystallite height (Lc) of coal-based graphite and graphene are positively linearly correlated with the reflectance of raw coal. La and Lc of coal-based graphite are distributed in 17.591–48.374 nm and 11.359–23.023 nm, respectively. After redox, La and Lc of coal-based graphene are distributed in 4.405 nm–6.243 nm and 0.804–1.144 nm, respectively. The defect degree (ID/IG) of coal-based graphene is higher than that of raw coal, demineralized coal, and coal-based graphite. The coal-based graphene is thin and transparent, and only contained carbon and oxygen. Combined with the parameters of XRD and HRTEM, it is calculated that the interlayer spacing (d002) of Qinshui-coal-based graphene is about 0.4007 nm and the number of layers (Nave) is about 5.
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作者：
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发表时间：
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期刊：
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影响因子：
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