Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 304, Issue -, Pages -Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2021.122603
Keywords
Metal-organic coordination polymer; Structure; Magnetism; Catalytic degradation
Funding
- key project of science and technology plan of Beijing Education Commission [KZ201910028038]
- National Natural Science Foundation of China [21471104]
- Laboratory Open Project Fund of Capital Normal University
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A new metal-organic coordination polymer, [Co(2,3'-oba)(dpp)](n), was synthesized by hydrothermal method, showing single-molecule magnet behavior and excellent catalytic properties in dye degradation.
A new metal-organic coordination polymer, [Co(2,3'-oba)(dpp)](n) (1) constructed from 2,3'-oxybisbenzoic acid (2,3'-H(2)oba) and 1,3-di(pyridin-4-yl)propane (dpp) was synthesized by hydrothermal method. The complex 1 is a 2D network structure connected by Co-2,3'-oba-Co-dpp helical chains. The temperature-dependent magnetic susceptibility and alternating current (ac) magnetic susceptibility measurements of the complex 1 were discussed. The complex 1 was shown to be a single-molecule magnet with slow magnetic relaxation behavior having an energy barrier U-eff of 15 K and tau(0) =1.56 x 10(-6) s. As a catalyst, complex 1 exhibited excellent catalytic properties on the activation of peroxymonsulfate (PMS) for the dyes degradation. Specifically, an almost complete degradation of Rhb in aqueous solution was achieved by complex 1/PMS system with an efficiency of 99% within 15 min. The feasible active components were explored by quenching experiments, and the results showed that sulfate radicals generated in the degradation system was the main active constituent in the degradation process. The complex 1 has a highly stable skeleton structure which enabled its recycling in the dye degradation system. The obtained results provide an effective method for high degradation efficiencies of dyes in water.
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