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Porous boron nitride nanoribbons with large width as superior adsorbents for the rapid removal of cadmium and copper ions from water

Abstract

Novel porous boron nitride nanoribbons (BNNRs) were successfully developed as superior adsorbents to rapidly remove the cadmium and copper ions from water. The resultant BNNRs possessed the large specific surface areas and small average porosity (866 m2/g and 2.1 nm). The width of the single nanoribbon was approximately 660 nm. The maximum adsorption capacities for Cd2+ and Cu2+ ions were about 530 mg/g (C0 = 600 mg/L, pH = 6, dosage = 1 g/L) and 331 mg/g (C0 = 500 mg/L, pH = 5, dosage = 1 g/L), respectively. Further, it possessed the ability to rapidly adsorb the Cd2+ and Cu2+ within 10 min and 20 min. Interference and reuse experiments demonstrated that the BNNRs exhibited superior adsorption performance with easy recyclability and sustainability, indicating that the adsorbents might be applied to purify heavy metal ions from the diversified water including wastewater and drinking water at pH = 3-8 or under the interference of other metal ions. The XPS and FT-IR analyses revealed that the possible mechanism of adsorption is the chelation and attraction of heavy chemical metals by surface chemical bonds, such as B-O and –NH2 bonds. In the cadmium (1 mg/L) and copper containing (10 mg/L) of simulated real water, the WHO standard can be reached within 10 minutes and 1 minute on BNNRs (dosage = 1 g/L), respectively. Therefore, the as-prepared BNNRs are ideal candidates for water purification.

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Publication details

The article was received on 18 Oct 2018, accepted on 10 Jan 2019 and first published on 11 Jan 2019


Article type: Paper
DOI: 10.1039/C8NJ05299A
Citation: New J. Chem., 2019, Accepted Manuscript
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    Porous boron nitride nanoribbons with large width as superior adsorbents for the rapid removal of cadmium and copper ions from water

    T. Liu, Y. Li, J. He, Y. Hu, C. Wang, K. Zhang, X. Huang, L. Kong and J. Liu, New J. Chem., 2019, Accepted Manuscript , DOI: 10.1039/C8NJ05299A

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