Adsorption of phenol on porous carbon from Toona sinensis leaves and its mechanism

被引：75

作者：

Kong, Xiaodong ^{[1
]}

Gao, Hongpeng ^{[2
]}

Song, Xiaolan ^{[1
]}

Deng, Yuehua ^{[3
]}

Zhang, Ying ^{[1
]}

机构：

[1] Cent S Univ, Sch Mineral Proc & Bioengn, Key Lab Biomet, Minist Educ, Changsha 410083, Peoples R China

[2] Univ Calif San Diego, Dept NanoEngn, La Jolla, CA 92093 USA

[3] Hunan Rare Earth Met Mat Res Inst, Changsha 410126, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 739卷

关键词：

Porous carbon; Toona sinensis leaves; Phenol; Adsorption; Mechanism; ACTIVATED CARBON; SURFACE-AREA; WHEAT BRAN; WATER;

D O I：

10.1016/j.cplett.2019.137046

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The adsorption performances of phenol onto porous carbon from Toona sinensis leaves were carried out. The carbon material possessed the outstanding surface area of 2719 m(2)/g under mass ratio of 3. The maximum adsorption capacity was recorded as 325 mg/g for 800 mg/L of phenol at 25 degrees C. In kinetic and isotherm studies, the data were well explained by the pseudo second-order and Langmuir equations, revealing the major monolayer adsorption. The Gibbs free energy change and thermal analysis indicated that the adsorption mechanism was mainly physical in nature via the pi-pi dispersion interaction.

引用

页数：6

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