Nickel nanoparticles encapsulated in porous carbon and carbon nanotube hybrids from bimetallic metal-organic-frameworks for highly efficient adsorption of dyes

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  • Lina Jin, Jiangsu Univ, Jiangsu University, Sch Mat Sci & Engn
  • ,
  • Xiaoshuang Zhao, Jiangsu Univ, Jiangsu University, Sch Mat Sci & Engn
  • ,
  • Xinye Qian, Jiangsu Univ, Jiangsu University, Sch Mat Sci & Engn
  • ,
  • Mingdong Dong

Nickel nanoparticles encapsulated in porous carbon/carbon nanotube hybrids (Ni/PC-CNT) were successfully prepared by a facile carbonization process using Ni/Zn-MOF as the precursor. Distinct from previous studies, Ni/Zn-MOF precursors were prepared via a direct precipitation method at room temperature for only 5 min. After the carbonization, magnetic Ni nanoparticles were well embedded in the porous carbon and carbon nanotube. The obtained Ni/PC-CNT composites had a high surface area (999 m(2) g(-1) Marge pore volume (0.86 cm(3) g(-1)) and well-developed graphitized wall. The Ni/PC-CNT composites showed excellent adsorption capacity for removal of malachite green (MG), congo red (CR), rhodamine B (Rh B), methylene blue (MB) and methyl orange (MO) from aqueous solution. The maximum adsorption capacity of Ni/PC-CNT composites were about 898, 818, 395, 312 and 271 mg/g for MG, CR, RB, MB and MO dyes, respectively, which were much higher than most of the previously reported adsorbents. Moreover, the Ni/PC-CNT composites could be easily regenerated by washing it with ethanol and easy magnetic separation. (C) 2017 Elsevier Inc. All rights reserved.

Original languageEnglish
JournalJournal of Colloid and Interface Science
Volume509
Pages (from-to)245-253
Number of pages9
ISSN0021-9797
DOIs
Publication statusPublished - 1 Jan 2018

    Research areas

  • Metal-organic framework, Magnetic nanoporous carbon, Adsorption, Dye, HIGH-SURFACE-AREA, AQUEOUS-SOLUTION, MALACHITE GREEN, WATER-TREATMENT, WASTE-WATER, NANOPOROUS CARBON, HIGH-PERFORMANCE, OXYGEN REDUCTION, METHYL-ORANGE, CONGO RED

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