木质素水热法协同制备碳量子点和多孔碳材料的实验研究
X712; 为了提高可再生的生物质转化为高价值碳材料的利用效率,用木质素水热法协同制备了2种碳量子点(G-CQDs、B-CQDs)和2种多孔碳(G-PCs、B-PCs).采用高分辨透射电镜、拉曼光谱、傅里叶红外光谱、X射线光电子能谱、紫外-可见光吸收光谱、荧光光谱、扫描电镜、比表面及孔隙度分析系统地研究了碳材料的理化特性.实验结果表明:G-CQDs和B-CQDs在340 nm光激发下分别呈亮绿色和蓝色荧光,其最佳相对荧光量子产率为23.7％和5.2％;结构上G-CQDs的表面具有更丰富的官能团,而B-CQDs具有更高的石墨化程度;协同制备的G-PCs和B-PCs的比表面积分别为1 505.8、...
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| Published in | 东南大学学报（自然科学版） Vol. 52; no. 6; pp. 1122 - 1129 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
东南大学能源热转换及其过程测控教育部重点实验室,南京210096
01.11.2022
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-0505 |
| DOI | 10.3969/j.issn.1001-0505.2022.06.012 |
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| Abstract | X712; 为了提高可再生的生物质转化为高价值碳材料的利用效率,用木质素水热法协同制备了2种碳量子点(G-CQDs、B-CQDs)和2种多孔碳(G-PCs、B-PCs).采用高分辨透射电镜、拉曼光谱、傅里叶红外光谱、X射线光电子能谱、紫外-可见光吸收光谱、荧光光谱、扫描电镜、比表面及孔隙度分析系统地研究了碳材料的理化特性.实验结果表明:G-CQDs和B-CQDs在340 nm光激发下分别呈亮绿色和蓝色荧光,其最佳相对荧光量子产率为23.7％和5.2％;结构上G-CQDs的表面具有更丰富的官能团,而B-CQDs具有更高的石墨化程度;协同制备的G-PCs和B-PCs的比表面积分别为1 505.8、1 082.6 m2/g,总孔容高达0.74、0.51 cm3/g.将废弃的木质素协同转化为碳量子点和多孔碳,是实现生物质综合利用的有效策略,为多功能碳材料的绿色、大规模生产提供了新思路. |
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| AbstractList | X712; 为了提高可再生的生物质转化为高价值碳材料的利用效率,用木质素水热法协同制备了2种碳量子点(G-CQDs、B-CQDs)和2种多孔碳(G-PCs、B-PCs).采用高分辨透射电镜、拉曼光谱、傅里叶红外光谱、X射线光电子能谱、紫外-可见光吸收光谱、荧光光谱、扫描电镜、比表面及孔隙度分析系统地研究了碳材料的理化特性.实验结果表明:G-CQDs和B-CQDs在340 nm光激发下分别呈亮绿色和蓝色荧光,其最佳相对荧光量子产率为23.7％和5.2％;结构上G-CQDs的表面具有更丰富的官能团,而B-CQDs具有更高的石墨化程度;协同制备的G-PCs和B-PCs的比表面积分别为1 505.8、1 082.6 m2/g,总孔容高达0.74、0.51 cm3/g.将废弃的木质素协同转化为碳量子点和多孔碳,是实现生物质综合利用的有效策略,为多功能碳材料的绿色、大规模生产提供了新思路. |
| Author | 沈德魁 朱玲莉 曹瑾 |
| AuthorAffiliation | 东南大学能源热转换及其过程测控教育部重点实验室,南京210096 |
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| Author_FL | Shen Dekui Cao Jin Zhu Lingli |
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| Title | 木质素水热法协同制备碳量子点和多孔碳材料的实验研究 |
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