摘要
采用直流电弧放电法,使用填充法制备的阳极棒,制备了氮掺杂空心碳球（NDHCSs）。分别使用FESEM、HRTEM、EDX、EELS、XRD、UV-vis等对不锈钢片上的沉积产物进行表征,结果表明：NDHCSs直径主要在110～543 nm,球壁厚度在2～12 nm,由分布比较均匀的C、N和O元素组成,主要由石墨碳和另一种碳物相构成;其在无水乙醇中形成的悬浮液的UV-vis吸收光谱在210 nm、221 nm和264 nm处有三个吸收峰,在紫外光照射下呈现绿色。本文还对NDHCSs生成机理进行了简单的探讨。
N-doped hollow carbon spheres（NDHCSs） were prepared by DC arc discharge at 800℃ in nitrogen, using anode prepared by the filling method. The morphology, structure, chemical and phase compositions, and optical properties of the product deposited on the stainless steel sheet were characterized by using FESEM, HRTEM, EDX, EELS, XRD, and UV-Vis, respectively. The results show that the outer diameters of the NDHCSs are in the range of 110–543 nm and their wall thicknesses are in the range of 2–12 nm. The walls consist of two parts, namely, the inner part and the outside part, which are comparatively complete structure of graphite and discontinuously wave-like structure of layer, respectively. The NDHCSs consist of C, N and O elements with comparatively uniform distribution. The phase composition of NDHCSs mainly includes graphitic carbon and another carbon phase. The UV-Vis spectra of the suspensions of the NDHCSs in ethanol show three absorption peaks at 210 nm, 221 nm and 264 nm. Such suspension emits green luminescence under UV light irradiation and can keep stable at least for two months. The NDHCSs may have potential application in the field of optics.
出处
《无机材料学报》
SCIE
EI
CAS
CSCD
北大核心
2016年第8期827-833,共7页
Journal of Inorganic Materials
关键词
电弧放电
氮掺杂
空心碳球
光学性质
生成机理
arc discharge
N-doped
hollow carbon spheres
optical properties
mechanism of formation
