Title of article
Defluoridation from aqueous solution by manganese oxide coated graphene oxide
Author/Authors
Li، نويسنده , , Yanhui and Du، نويسنده , , Qiuju and Wang، نويسنده , , Junjie and Liu، نويسنده , , Tonghao and Sun، نويسنده , , Jiankun and Wang، نويسنده , , Yonghao and Wang، نويسنده , , Zonghua and Xia، نويسنده , , Yanzhi and Xia، نويسنده , , Linhua، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2013
Pages
7
From page
67
To page
73
Abstract
A new adsorbent manganese oxide coated graphene oxide (MOGO) was synthesized and characterized by TEM, XRD, FTIR, and BET analysis. The effects of different parameters such as pH, adsorbent dose, contact time and temperature were studied to understand the adsorption behavior of the adsorbent under various conditions. Adsorption studies revealed that optimum removal of fluoride occurred in a pH range of 5.5–6.7. The Langmuir isotherm model demonstrated that the maximum fluoride adsorption capacity of MOGO was 11.93 mg/g and 8.34 times higher than that of GO. The kinetic adsorption data were analyzed using the pseudo first-order model, the pseudo second-order model and the intra-particle diffusion model. Thermodynamic adsorption results showed that adsorption of fluoride by MOGO was a spontaneous and endothermic process.
Keywords
Graphene oxide , Defluoridation , manganese oxide , Adsorption , Kinetic modeling
Journal title
Journal of Fluorine Chemistry
Serial Year
2013
Journal title
Journal of Fluorine Chemistry
Record number
1611985
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