Green Carbon Material for Organic Contaminants Adsorption

Langmuir : the ACS Journal of Surfaces and Colloids
Da JiangDihua Wang

Abstract

Eco-friendly and economical adsorbents are desirable for removing organic pollutants from the environment. Herein, a kind of green carbon material, electrolytic carbon (EC) prepared by the electrochemical conversion of greenhouse gas (CO2) in molten carbonate, is verified as an effective adsorbent for aniline and other small aromatic organic molecules. The EC consists of nanoparticles and nanoflakes, featuring the specific surface area of ∼641 m2/g with an enriched micropore structure. It exhibits a large adsorption capacity (Qmax > 114.1 mg/g) for aniline, especially in water with a lower contamination level. The adsorption conforms to the pseudo-second-order equation kinetically and the Freundlich model thermodynamically in the temperature range of 303-323 K. Moreover, it is found that the adsorption performance of the material can be further improved through reducing surface oxygen functional groups by a simple thermotreatment. Its adsorption capacity for aniline is enhanced by 1.7 times, demonstrating that the π-π dispersive interaction plays a primary role for the efficient adsorption. This adsorption mechanism is further confirmed by the excellent adsorption performance of the carbon materials for other analogue aromatic ...Continue Reading

References

May 26, 2005·Journal of Colloid and Interface Science·Xiaoyan Yang, Bushra Al-Duri
Jul 19, 2005·Journal of Colloid and Interface Science·Francisco VillacañasJosé L Figueiredo
May 8, 2010·Chemical Communications : Chem Comm·Xufeng Zhou, Zhaoping Liu
Oct 24, 2018·Langmuir : the ACS Journal of Surfaces and Colloids·Qiantao ShiXiaoguang Meng

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Citations

Mar 27, 2021·Environmental Science and Pollution Research International·Dongjin WanShuhu Xiao
May 2, 2021·Journal of Hazardous Materials·Yongsong MaDihua Wang
Jun 10, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Seyfeddine RahaliAbueliz Modwi

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