掺杂时间对水热法制备氮掺杂还原氧化石墨烯的影响研究
Hydrothermal Preparation of Nitrogen-doped Reduced Graphene Oxide and Its Properties as a Function of Doping Time
刘慧平 1杨懿 1李云鹏 1周元林 1李迎军1
作者信息
- 1. 西南科技大学环境友好能源材料国家重点实验室,绵阳 621010;西南科技大学材料与化学学院,绵阳 621010
- 折叠
摘要
以氨水为氮源,探究了水热反应时间不同情况下氮掺杂还原氧化石墨烯(NrGO)结构和性能的影响.采用扫描电镜(SEM)、X射线衍射(XRD)、拉曼光谱分析(Raman)、X射线光电子能谱分析(XPS)、比表面积分析(BET)等测试手段对其形貌和结构进行表征.结果表明,随着氮掺杂时间的增加,NrGO的氮元素含量从7.05％增加到9.22％.氮的掺杂导致了石墨烯结构缺陷增多、微观形貌褶皱增多及导电性变好,氮键构型也表现出不同的变化趋势.
Abstract
The effect of different cases of hydrothermal reaction time on the structure and properties of nitrogen-doped reduced graphene oxide(NrGO)was investigated using ammonia as a nitrogen source.Scanning electron microscopy(SEM),X-ray diffraction(XRD),Raman spectroscopy(Raman),X-ray photoelectron spectroscopy(XPS),specific sur-facearea analysis(BET),and other test methods were used to characterize the morphology and structure.The results showed that the nitrogen content of NrGO increased from 7.05％to 9.22％with the increase of nitrogen doping time.Ni-trogen doping led to an increase in structural defects,an increase in micro-morphological folds and a better electrical con-ductivity of graphene,and the nitrogen bonding configurations also showed different trends.
关键词
氮掺杂还原氧化石墨烯/氧化石墨烯/水热法/导电性Key words
nitrogen-doped reduced graphene oxide/graphene oxide/hydrothermal method/electrical conductivity引用本文复制引用
基金项目
西南科技大学博士基金(23zx7154)
环境友好能源材料国家重点实验室项目(20Fksy13)
出版年
2024
NETL
NSTL
万方数据