摘要
在开放空间采集了附着于不同物体表面的柴油燃烧烟尘颗粒物.通过X射线光电子能谱(XPS)、透射电子显微镜(TEM)、拉曼(Raman)光谱来分析烟尘颗粒的理化特性.结果表明,烟尘中含有无定型碳、C C、C O、C=O和吸附氧物种等多种官能团;各载体上附着的烟尘所含官能团种类完全一致,说明载体种类不会对柴油定性鉴定结果产生影响,但各载体因其自身理化特性对官能团的吸附能力不相同;各载体烟尘颗粒有着各不相同的链状结构和团聚形态,载体种类会对烟尘颗粒基本碳粒子的粒径、C原子内部结构特征有一定影响.
Under the condition of an open space,the soot particles in the diesel combustion flame were collected on different carriers.The physicochemical properties of soot particles were analyzed by X-ray photoelectron spec-troscopy(XPS),transmission electron microscopy(TEM),and Raman spectroscopy.Results show that the soot contained multiple functional groups,such as amorphous carbon,C C,C O,C=O,and adsorbed oxygen species.The types of functional groups on each carrier showed a complete consistency,indicating that the types of carriers do not affect the qualitative identification result of diesel.However,different carriers have different ad-sorption capacities for functional groups as a result of their own physicochemical properties.Due to the differences in chain structure and agglomeration state among different soot particles on the carriers,the types of carriers have a certain influence on the particle size of primary carbon particles and the internal structural characteristics of C atom.
作者
易睿
陈东梁
李方俊
杨冉
董俊莹
徐鹏
Yi Rui;Chen Dongliang;Li Fangjun;Yang Ran;Dong Junying;Xu Peng(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Key Laboratory of Standardization and Measurement for Nanotechnology,National Center for Nanoscience and Technology,Beijing 100190,China)
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2019年第6期533-541,共9页
Journal of Combustion Science and Technology
基金
北京高等学校青年英才计划资助项目(YETP0499)
关键词
火灾现场
柴油烟尘
XPS
TEM
RAMAN光谱
fire scene
diesel soot
X-ray photoelectron spectroscopy(XPS)
transmission electron microscopy(TEM)
Raman spectroscopy
