Journal
JOURNAL OF SAUDI CHEMICAL SOCIETY
Volume 24, Issue 8, Pages 642-649Publisher
ELSEVIER
DOI: 10.1016/j.jscs.2020.07.002
Keywords
Coconut shell carbon; Polydopamine; Adsorption; Dye removal
Categories
Funding
- Qinghai Department of Science and Technology [2019-ZJ-7027]
- Open Project of State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University [2020-zz-05]
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Relatively cheap or at no cost, easily available, renewable agricultural waste has been given a new purpose. Using coconut shells as the raw material, and being obtained from agricultural, industry by-products, or even waste materials were used as carbon resource. Acid etching coconut shells carbon (AC) rendered micro/nanoscale hierarchical structures and made the surface available for further modification. Then, the surface of acidified coconut shell carbon was engineered via mussel inspired chemistry. The polydopamine functionalized AC composites (ACPDA) were applied for efficient removal of methylene blue (MB) dye. Further, the surface morphology, and chemical structure were evaluated by means of scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FT-IR). Through the combination of acid etching and mussel inspired chemistry, organic functional groups can be successfully introduced onto the surface of the coconut shells carbon. The improvement of adsorption capacity of AC-PDA compared with AC is probably due to the increased number of active binding sites resulting from surface modification and formation of new functional groups. (C) 2020 Published by Elsevier B.V. on behalf of King Saud University.
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