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Two pure MOF-photocatalysts with readily preparation for the degradation of methylene blue dye under visible light

Abstract

Two 3D metal-organic frameworks (MOFs) with different structures [Cu(4,4′-bipy)Cl]n (1), [Co(4,4′-bipy)•(HCOO)2]n (2) have been synthesized under hydrothermal method using typical ligand (4,4′-bipyridine), and characterized by elemental analyses, thermal analyses and single crystal X-ray diffraction. As MOF materials, two complexes have showed an active performance for photodegradation of methylene blue (MB) dye under visible light. MB degradation over the two MOFs-based photocatalysts both follow first-order kinetics. The addition of a H2O2 electron acceptor can markedly enhance the photocatalytic MB degradation performance via ligand-to-metal charge transfer mechanism, especially complex 1. Complex 1 is better than complex 2 in MB photodegradation performance at the same condition. Moreover, complex 1 has showed a stable activity for MB degradation after four consecutive usages. Owing to the advantages of the visible light response, stable structure, low cost and high yield, these MOFs-based photocatalysts will facilitate new efforts in the environmental purification.

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Publication details

The article was received on 12 Jan 2018, accepted on 05 Feb 2018 and first published on 05 Feb 2018


Article type: Paper
DOI: 10.1039/C8DT00156A
Citation: Dalton Trans., 2018, Accepted Manuscript
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    Two pure MOF-photocatalysts with readily preparation for the degradation of methylene blue dye under visible light

    M. Zhang, L. Wang, T. Zeng, Q. Shang, H. Zhou, Z. Pan and Q. R. Cheng, Dalton Trans., 2018, Accepted Manuscript , DOI: 10.1039/C8DT00156A

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