作者: Yan-Juan Zhang , Zhen-Jiao Xing , Zheng-Kang Duan , Meng Li , Yin Wang
DOI: 10.1016/J.APSUSC.2014.07.126
关键词: Organic chemistry 、 Activated carbon 、 Pyrolysis 、 Adsorption 、 Char 、 Fourier transform infrared spectroscopy 、 Chemical engineering 、 X-ray photoelectron spectroscopy 、 Titration 、 Chemistry 、 BET theory
摘要: Abstract The effects of steam activation on the pore structure evolution and surface chemistry activated carbon (AC) obtained from bamboo waste were investigated. Nitrogen adsorption–desorption isotherms revealed that higher temperatures and/or times promoted creation new micropores widened existing micropores, consequently decreasing area total volume. Optimum conditions included an temperature 850 °C, time 120 min, flush generated deionized water 0.2 cm 3 min −1 . Under these conditions, AC with a BET 1210 m 2 g volume 0.542 cm −3 was obtained. Changes in determined through Boehm titration, pH measurement, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron (XPS). Results presence large number basic groups pyrolyzed char AC. Steam did not affect species oxygen-containing but changed contents when compared char. Scanning electron microscopy used to observe morphology products. under optimum showed monolayer adsorption capacity 330 mg g for methylene blue (MB), which demonstrates its excellent potential MB applications.