Department of Chemistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2010 Nov;45(13):1775-92. doi: 10.1080/10934529.2010.513290.
Surface functional groups produced from oxidation (carboxylic acid, lactone, quinine, phenol, and nitro groups), reduction (alcohol and amine groups), and grafting (imine and hemi-acetal) reactions were characterized (using surface analysis and chemical methods) and compared with unmodified activated carbon (AC) materials. The untreated, surface-modified, and grafted activated carbon materials were characterized by various surface sensitive methods: Diffuse Reflectance Infrared Fourier Transform Spectroscopy, Scanning Electron Microscopy, Raman spectroscopy, thermogravimetry analysis, and Matrix Assisted Laser Desorption Ionization Time of Flight (MALDI-TOF) mass spectrometry. A chemical method (Boehm titration) was used for estimating the amount of surface bound acidic and basic functional groups. Nitrogen porosimetry was used to analyze the surface area (95-1350 m²/g) and pore volume (0-0.31 cm³/g) characteristics of AC, surface modified AC, and AC materials grafted with β-cyclodextrin.
表面功能基团是通过氧化（羧酸、内酯、奎宁、苯酚和硝基）、还原（醇和胺）和接枝（亚胺和半缩醛）反应产生的，这些基团的特性（使用表面分析和化学方法）与未改性的活性炭（AC）材料进行了比较。未处理、表面改性和接枝的活性炭材料通过各种表面敏感方法进行了表征：漫反射红外傅里叶变换光谱、扫描电子显微镜、拉曼光谱、热重分析和基质辅助激光解吸电离飞行时间（MALDI-TOF）质谱。一种化学方法（Boehm 滴定法）用于估计表面结合的酸性和碱性官能团的数量。氮气孔隙率分析用于分析活性炭、表面改性活性炭和接枝β-环糊精的活性炭材料的表面积（95-1350 m²/g）和孔体积（0-0.31 cm³/g）特性。
