Journal
TRANSITION METAL CHEMISTRY
Volume 44, Issue 3, Pages 275-281Publisher
SPRINGER
DOI: 10.1007/s11243-018-0292-7
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Funding
- National Natural Science Foundation of China [21761010]
- Natural Science Foundation of Hainan Province [217018, 217055]
- Hainan University start-up fund [kyqd1654, KYQD(ZR)1806]
- Opening Project of Key Laboratory of Polyoxometalate Science of Ministry of Education [RERU2018009]
- Hainan Provincial Graduate Innovation Research Project [Hys2018-55]
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Two bimetallic metal-organic frameworks (MOFs), specifically {2[LiM(TDA)(2)(DMF)]NH2+(CH3)(2)}(n) (M=Co (HNU-29) or Zn (HNU-30), TDA=2,5-thiophenedicarboxylate), were synthesized by solvothermal methods. X-ray crystal structures of the two MOFs showed them to be isostructural. Thus, in both cases, the metal secondary building units were connected by TDA(2-) ligands to form a 3D framework whose structure can be simplified to the twofold interpenetrated dia net. HNU-29 showed excellent photocatalytic activity for the degradation of methylene blue (MB) under visible light even without the addition of H2O2 as an electron acceptor, remaining stable even after several cycles of reuse. The MB degradation followed first-order kinetics, and the photocatalytic degradation mechanism was found to be related to the effective ligand-to-metal charge transfer within the framework.
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