Effect of pyrolysis temperature on properties of ACF/CNT composites

• 作 者: WANG Li-ping HUANG Zhu-cheng ZHANG Ming-yu LIAO Xing-sheng
• 机 构: School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;D
• 出 处: 中南大学学报（英文版）
• 发表日期: 2012年10期
• 关键词: ACF/CNT composites pyrolysis temperature chemical vapor deposition BET specific

Activated carbon fiber/carbon nanotube (ACF/CNT) composites were fabricated by chemical vapor deposition (CVD) process.The effects of pyrolysis temperature on properties of ACF/CNT composites,including BET specific surface area,mass increment rate and adsorption efficiency for rhodamine B in solution,were investigated by scanning electron microscopy.The results show that the pyrolysis temperature is a key factor affecting the qualities of ACF/CNT composites.The mass increment rate and BET specific surface area sharply decrease with the increase of pyrolysis temperatures from 550 °C to 850 °C and the minimum diameter of CNTs appears at 750 °C.The maximum adsorption efficiency of ACF/CNT composites for rhodamine B is obtained at 650 °C.ACF/CNT composites are expected to be useful in adsorption field.