Journal
JOURNAL OF MATERIALS SCIENCE
Volume 51, Issue 14, Pages 6793-6800Publisher
SPRINGER
DOI: 10.1007/s10853-016-9966-8
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Funding
- National Natural Science Foundation of China [21271158, 21576247]
- Postdoctoral Research Sponsorship of Henan Province [2015015]
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A general, simple, eco-friendly, and scalable route of obtaining highly adsorptive activated carbon from biomass using ZnCl2 molten-salt process is reported. Upon using three biomasses (pine wood chips, banana peels, and pine leaves) as the model carbon precursors, the molten-salt process yields different porous structures of carbons with a specific surface area up to 1624.8 m(2) g(-1). The properties of the three obtained activated carbons were characterized by SEM, TEM, XRD, FT-IR, and BET. The results show that all of them are amorphous with oxygen-containing functional groups on the surface. Besides, they exhibit remarkable adsorption capacity for removal of methylene blue of 425, 225, and 300 mg g(-1), respectively. Since various biomasses can be transformed into activated carbons, molten-salt route is proved general and feasible, which offers a simple and environmentally sound way for transforming low-cost and abundant biomass to highly adsorptive and valuable activated carbon. This method also opens up a new avenue toward the application of biomass in various fields.
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