Removal of copper ions by few‐layered graphene oxide nanosheets from aqueous solutions: external influences and adsorption mechanisms
摘要：
BACKGROUD In this article, we synthesize graphene oxide (GO) followed by a modified Hummers method and several characterization techniques were provided. Its adsorptive activity was evaluated based on the removal of Cu(II) from an aqueous solution. External influences were taken account to further study the adsorption mechanism. RESULT Characterisation results revealed that GO was well prepared and a large amount of oxygen-containing functional groups were introduced. The Cu(II) adsorption increased with increasing the solution pH and precipitate at alkaline condition had been considered. NaCl concentration improved copper adsorption at low pH. Formate reduced copper adsorption while benzoate improved the adsorption under low pH conditions. CONCLUSIONS Here, GO performed well adsorption ability to Cu(II). The external conditions represent different influences on the adsorption process. Experimental results demonstrate that GO is a promising alternative material for pollutants removal.
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DOI：
10.1002/jctb.5601
被引量：
年份：
2018
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