Preparation of highly developed mesoporous activated carbon fiber from liquefied wood using wood charcoal as additive and its adsorption of methylene blue from solution

• Published in: Bioresource technology Vol. 164; pp. 1 - 6
• Main Authors: Ma, Xiaojun, Zhang, Fan, Zhu, Junyan, Yu, Lili, Liu, Xinyan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.07.2014; Elsevier
• Subjects: Activated carbon fiber; Adsorption; Biological and medical sciences; Carbon - chemistry; Charcoal; Charcoal - chemistry; Fundamental and applied biological sciences. Psychology; Liquefied; Methylene Blue - isolation & purification; Nitrogen - chemistry; Photoelectron Spectroscopy; Porosity; Solutions; Surface area; Surface chemistry; Temperature; Water Pollutants, Chemical - isolation & purification; Wood; Wood - chemistry; Wood charcoal; X-Ray Diffraction; X-ray photoelectron spectroscopy; X-ray diffraction; Adsorption; Wood charcoal; Activated carbon fiber; X-ray photoelectron spectroscopy; Wood; Liquefaction; Fiber; X ray; X ray diffraction; Methylene blue; Spectrometry; Activated carbon; Charcoal
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/j.biortech.2014.04.050

•A new method for preparing mesoporous activated carbon fibers was introduced.•ACF with 2604.7m2/g specific surface area and 1.433cm3/g total pore volume.•86.8% pore volume was from the contribution of the small mesopores of 2–4nm.•The effects of wood charcoal on the formed mesoporous were investigated. Activated carbon fiber (C-WACF) with super high surface area and well-developed small mesopores were prepared by liquefied wood and uses wood charcoal (WC) as additive. The characterization and properties of C-WACF were investigated by XRD, XPS and N2 adsorption. Results showed the pore development was significant at temperatures >750°C, and reached a maximum BET surface area (2604.7m2/g) and total pore volume (1.433cm3/g) at 850°C, of which 86.8% was from the contribution of the small mesopores of 2–4nm. It was also found that the mesopore volume and methylene blue adsorption of C-WACF were highly increased as the temperature increases from 750 to 850°C. Additionally, the reduction of graphitic layers, the obvious changes of functional groups and the more unstable carbons on the surface of C-WACF, which played important roles in the formation of mesopores, were also observed.