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Issue 3, 2019
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The preparation of new covalent organic framework embedded with silver nanoparticles and its applications in degradation of organic pollutants from waste water

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Abstract

A covalent organic framework (COF) featuring a unique light porous structure and silver nanoparticles shows high efficiency in the degradation of environmental pollutants. However, the combination of a COF with silver nanoparticles has never been reported until now. Toward this end, 2,4,6-tris-(4-formylphenoxy)-1,3,5-triazine (TPT-CHO) and hydrazine hydrate were selected as the construction units of the COF material (TPHH-COF), which possesses rich nitrogen and oxygen sites. Then a new type of composite catalyst (Ag@TPHH-COF) was successfully obtained by solution infiltration. The obtained materials were also fully characterized by standard methods. The results showed that the silver nanoparticles (with diameters of 5 ± 3 nm) were uniformly dispersed on the surface and in the interlayer gaps of the TPHH-COF substrate. Catalytic studies showed that Ag@TPHH-COF could catalyze the reduction of the various nitroaromatic compounds (NACs) with high efficiency, such as 4-nitrophenol, 2-nitrophenol, 4-nitroaniline, nitrobenzene, 4-nitrotoluene and 1-butyl-4-nitrobenzene. Ag@TPHH-COF could also catalyze the reduction of organic dyes such as Rhodamine B (RhB), Methylene Blue (MB), Methyl Orange (MO) and Congo Red (CR). Moreover, Ag@TPHH-COF has good reusability and high recovery.

Graphical abstract: The preparation of new covalent organic framework embedded with silver nanoparticles and its applications in degradation of organic pollutants from waste water

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Publication details

The article was received on 09 Nov 2018, accepted on 18 Dec 2018 and first published on 18 Dec 2018


Article type: Paper
DOI: 10.1039/C8DT04458A
Citation: Dalton Trans., 2019,48, 1051-1059
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    The preparation of new covalent organic framework embedded with silver nanoparticles and its applications in degradation of organic pollutants from waste water

    R. Wang, D. Li, L. Wang, X. Zhang, Z. Zhou, J. Mu and Z. Su, Dalton Trans., 2019, 48, 1051
    DOI: 10.1039/C8DT04458A

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