Molecules (Sep 2023)

A New Cd(II)-Based Coordination Polymer for Efficient Photocatalytic Removal of Organic Dyes

  • Juanjuan Zhao,
  • Zhuoyu Dang,
  • Mohd. Muddassir,
  • Saleem Raza,
  • Aiguo Zhong,
  • Xiaoxiong Wang,
  • Juncheng Jin

DOI
https://doi.org/10.3390/molecules28196848
Journal volume & issue
Vol. 28, no. 19
p. 6848

Abstract

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Coordination polymers (CPs) are a diverse class of multi-dimensional compounds that show promise as photocatalysts for degrading dyes in polluted water. Herein, a new 1D Cd(II)-based coordination polymer with the formula [Cd(bpyp)(nba)2] (1) (bpyp = 2,5-bis(pyrid-4-yl)pyridine and Hnba = 4-nitrobenzoic acid) is synthesized and characterized. In 1, the two carboxyl groups of two different nba− ligands show μ2-η1:η1 and μ1-η1:η1 coordination modes to connect the CdII centers and sit on either side of the chain along the b direction. The produced CP 1 was utilized as the photocatalyst in the process of the photodegradation of methyl blue (MB), methyl orange (MO), rhodamine B (RhB), and methyl violet (MV) dyes when exposed to UV light. The photocatalytic degradation activities of CP 1 were analyzed, and the results suggest that it exhibits an extraordinary efficiency in the degradation of MB, MV, MO, and RhB. RhB has a 95.52% efficiency of degradation, whereas MV has a 58.92% efficiency, MO has 35.44%, and MB has 29.24%. The photodecomposition of dyes is catalyzed mostly by •O2− and •OH−, as shown by research involving the trapping of radicals.

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