葵花基炭材料的制备及其对Cu^(2+)的吸附性能

Adsorption abilities of sunflower plate carbon materials towards Cu^(2+)

在500、600、700℃3个不同温度下,对提取果胶后的葵花盘分别进行炭化,制得了3种炭材料,分别为500 KH、600 KH和700 KH。其中,600 KH的比表面积最大,为122.99 m2/g,孔径为2.274nm。对该种炭材料吸附铜离子的性能进行研究,其对铜离子的吸附符合Langmuir单层吸附模型,在60min达到吸附平衡,吸附量为34.45mg/g;随着温度升高,吸附量增加。

Three kinds of carbon materials are obtained via carbonizing sunflower plates that extracted the pectin at different temperatures 500,600,700 ℃ respectively. They are marked as 500 KH,600 KH and 700 KH. The specific surface area of 600 KH is maximum that reach 122.99 m2/g, the most probable pore size is 2. 274 nm. The adsorption abilities of carbon mate- rials towards Cu2＋ are researched. The adsorption of carbon materials towards Cu2＋ matches well the Langmuir adsorption model. The adsorption of 600 KH towards Cu2 ＋ reaches balance at 60 min and the adsorption capacity is 34.45 mg/g. The ad- sorption capacity increases with the increase of temperature.