Issue 48, 2021

Cu–Organic framework-derived V-doped carbon nanostructures for organic dye removal

Abstract

Metal–organic frameworks (MOFs) have recently emerged as a type of uniformly and periodically atom-distributed precursor and efficient self-sacrificial template to fabricate hierarchical porous-carbon-related nanostructured functional materials. In this work, we used Cu(II) ions and aromatic dicarboxylic acid to construct [Cu3(4,4′-oba)22-OH)2(H2O)2]n (4,4′-H2oba = 4,4′-oxybisbenzoic acid) as a precursor for the preparation of carbon nanostructures. Doping foreign elements into intrinsic MOF-based nanomaterials is an effective way to enhance the adsorption property and photocatalytic activity; thus, we designed a facile method to synthesize a vanadium-doped mixture of Cu2O and Cu nanoparticles encapsulated in a Cu-MOF-derived carbon nanostructure (C-V-1) in this work for the first time. Benefiting from the protection of the carbon shell and regulation of the electronic structure by doping vanadium and phase-mixing Cu2O and Cu, the adsorption capacities of C-V-1 for MB, RhB, MO, CR and GV at room temperature are 174.13, 147.06, 179.92, 275.90 and 611.81 mg g−1 in 240 min, respectively, while the photocatalytic degradation rates are 88.14% for MB, 79.80% for RhB, 71.31% for MO, and 71.19% for CR after 4 h. In addition, the degradation rate is larger than 99.01% for GV after only 30 min of UV irradiation. This strategy of using a diverse MOF as a structural and compositional material to create a multifunctional composite/hybrid may expand the opportunities to explore highly efficient, fast and robust adsorbents and photocatalysts for water treatment.

Graphical abstract: Cu–Organic framework-derived V-doped carbon nanostructures for organic dye removal

Supplementary files

Article information

Article type
Paper
Submitted
13 Oct 2021
Accepted
18 Nov 2021
First published
18 Nov 2021

Dalton Trans., 2021,50, 18173-18185

Cu–Organic framework-derived V-doped carbon nanostructures for organic dye removal

X. Zhang, H. Zhao, Y. Liu, W. Li, A. Yang and J. Luan, Dalton Trans., 2021, 50, 18173 DOI: 10.1039/D1DT03450B

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