摘要
通过对比不同直径的活性碳纳米纤维及活性碳纤维对苯、甲苯和乙醇蒸汽的吸附等温线,研究不同直径的活性碳纳米纤维及活性碳纤维吸附挥发性有机物（VOC）气体性能的差异。经扫描电子显微镜（SEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）等测试分析,结果表明：活性碳纤维直径在10μm数量级,随直径减小,纤维晶体性变差,结构无序性增大;微孔达0.4～0.8 nm时VOC气体分子更易进入与吸附位结合;活性碳纳米纤维及活性碳纤维氮吸附-脱附曲线均为Ⅰ型。故分压比低于0.01时活性碳纳米纤维对苯、甲苯和乙醇的吸附量要高于活性碳纤维的吸附量。
Through comparing the adsorption isotherms of activated carbon nanotube fiber and carbon fiber with different diameters to benzene, toluene and ethanol, their absorption performances to volatile organic compound （VOC） gases are studied. By scanning electron microscope （SEM）, X-ray diffraction （XRD）, and X-ray photoelectron spectroscopy （XPS） test analyses, the results show that for the carbon fiber of diameter in 10 μm orders of magnitude, fiber crystallinity becomes poor with diameter decrease, and structure disorder increases; for fibers with micro holes of 0.4 -0.8 nm, VOC gas molecules are more likely to enter and combine with adsorption sites; their nitrogen adsorption-take off curves are all type I. So, when the pressure ratio is less than 0.01, the adsorption capacity of activated carbon nanotube fibers to benzene, toluene and ethanol is higher than that of activated carbon fibers.
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2012年第4期337-342,共6页
Journal of University of Jinan(Science and Technology)
基金
贵州省科学技术基金（GZST-20082052）
关键词
活性碳纳米纤维
活性碳纤维
不同直径
VOC
吸附
carbon nanotube fiber
activated carbon fibers
different diameter
VOC
adsorption
