Dye Adsorption on Layered Graphite Oxide

被引：324

作者：

Bradder, Philip ^{[1
]}

Ling, Sie King ^{[1
]}

Wang, Shaobin ^{[1
]}

Liu, Shaomin ^{[1
]}

机构：

[1] Curtin Univ Technol, Dept Chem Engn, Perth, WA 6845, Australia

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2011年 / 56卷 / 01期

关键词：

LOW-COST ADSORBENTS; WASTE-WATER; MALACHITE GREEN; ACTIVATED CARBON; METHYLENE-BLUE; AMINO-GROUPS; REMOVAL; INTERCALATION; ZEOLITE;

D O I：

10.1021/je101049g

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Graphite oxide (GO) was prepared by a modified Hummers-Offeman method and was tested as an adsorbent for the removal of dyes in aqueous solution. The structure of GO was characterized by N-2 adsorption, X-ray diffraction (XRD), and Fourier transform infrared (FT-IR) spectroscopy. It is found that GO does not show a significant change in surface area, but the layered graphene structure was expanded, and several surface oxygen functional groups were formed, which play a significant role in adsorption. The amount of the dyes, methylene blue and malachite green, adsorbed on the GO was much higher than that on graphite, and the adsorption capacity based on the Langmuir isotherm is (351 and 248) mg.g(-1), respectively, much higher than activated carbon. The adsorption mechanism was proposed as electrostatic attraction.

引用

页码：138 / 141

页数：4

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