Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 318, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2020.114052
Keywords
Carbon sheet; Adsorbent; Chromium removal; Carbonization; Regeneration; Self-assembly
Funding
- National Natural Science Foundation of China [51678307]
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A novel nitrogen-doped carbon sheet (NDCS) utilized for Cr (VI) elimination from wastewater. was fabricated. The NDCS is fabricated by a very easy approach, via the self-assembly process of melamine and citric add as nitrogen and carbon precursors respectively. Through the self-assembly of citric add and melamine in hot water and their subsequent carbonization nitrogen-doped carbon sheet was obtained. The obtained carbon sheet exhibited a good removal performance of Cr (VI) 432 mg g(-1) according to the Langmuir model at an optimal pH of 3.0. The aforementioned enhanced removal efficiency can be put forth to the doped nitrogen contents in the material, which causes electrostatic attraction between ions of the chromium and the protonated nitrogen at low pH. The obtained carbon sheet provides an easy and environmentally friendly approach to fabricate nitrogen-doped carbon sheet, which elucidates great significance to be applied as an adsorbent for practical application in the wastewater treatment. (C) 2020 Elsevier B.V. All rights reserved.
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