激光诱导法制备煤基石墨烯的探索及其结构特征研究
TB333; 为探讨以煤为含碳前驱体,利用激光诱导技术制备煤基石墨烯的可能性,选择以挖金湾高挥发分烟煤、塔山低挥发分烟煤为碳源,运用激光诱导技术制备煤基石墨烯,并应用拉曼光谱(Raman)、X射线衍射光谱(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)和高分辨率透射电镜(HRTEM)对原煤以及激光辐照后的产物进行表征.结果表明,经过激光辐照后,产物的Raman图谱呈现出典型的2D峰以及尖锐的G峰,表明其结构有序度增强.XRD图谱表明其(002)和(100)衍射峰变得窄而尖锐,层间距均为0.345 nm.XPS结果表明烟煤激光辐照后sp2的C=C键和π—π作用增强,这表明产物形成了sp...
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| Published in | 煤炭科学技术 Vol. 51; no. 2; pp. 458 - 465 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国矿业大学(北京) 地球科学与测绘工程学院,北京 100083
01.02.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-2336 |
| DOI | 10.13199/j.cnki.cst.2023-0140 |
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| Abstract | TB333; 为探讨以煤为含碳前驱体,利用激光诱导技术制备煤基石墨烯的可能性,选择以挖金湾高挥发分烟煤、塔山低挥发分烟煤为碳源,运用激光诱导技术制备煤基石墨烯,并应用拉曼光谱(Raman)、X射线衍射光谱(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)和高分辨率透射电镜(HRTEM)对原煤以及激光辐照后的产物进行表征.结果表明,经过激光辐照后,产物的Raman图谱呈现出典型的2D峰以及尖锐的G峰,表明其结构有序度增强.XRD图谱表明其(002)和(100)衍射峰变得窄而尖锐,层间距均为0.345 nm.XPS结果表明烟煤激光辐照后sp2的C=C键和π—π作用增强,这表明产物形成了sp2网状芳香层片.通过SEM观察到的激光辐照后样品出现分层多孔结构,同时HRTEM结果显示出芳香条纹具有少层石墨烯特征,石墨烯层数多集中在2～10层,且条纹间距均为0.346 nm,与XRD得到的结果基本一致.这些分析结果表明烟煤在激光辐照后形成了煤基石墨烯.但是,受所用样品数量限制,此研究结果只是初步认识,在下一步研究中需要增加样品数量以深入研究. |
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| AbstractList | TB333; 为探讨以煤为含碳前驱体,利用激光诱导技术制备煤基石墨烯的可能性,选择以挖金湾高挥发分烟煤、塔山低挥发分烟煤为碳源,运用激光诱导技术制备煤基石墨烯,并应用拉曼光谱(Raman)、X射线衍射光谱(XRD)、X射线光电子能谱(XPS)、扫描电镜(SEM)和高分辨率透射电镜(HRTEM)对原煤以及激光辐照后的产物进行表征.结果表明,经过激光辐照后,产物的Raman图谱呈现出典型的2D峰以及尖锐的G峰,表明其结构有序度增强.XRD图谱表明其(002)和(100)衍射峰变得窄而尖锐,层间距均为0.345 nm.XPS结果表明烟煤激光辐照后sp2的C=C键和π—π作用增强,这表明产物形成了sp2网状芳香层片.通过SEM观察到的激光辐照后样品出现分层多孔结构,同时HRTEM结果显示出芳香条纹具有少层石墨烯特征,石墨烯层数多集中在2～10层,且条纹间距均为0.346 nm,与XRD得到的结果基本一致.这些分析结果表明烟煤在激光辐照后形成了煤基石墨烯.但是,受所用样品数量限制,此研究结果只是初步认识,在下一步研究中需要增加样品数量以深入研究. |
| Author | 王绍清 赵云刚 张路 王小令 |
| AuthorAffiliation | 中国矿业大学(北京) 地球科学与测绘工程学院,北京 100083 |
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| Author_FL | WANG Shaoqing ZHANG Lu WANG Xiaoling ZHAO Yungang |
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| Keywords | 煤基石墨烯 激光诱导 煤 石墨化 结构表征 |
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| Title | 激光诱导法制备煤基石墨烯的探索及其结构特征研究 |
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