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Photocatalytic Degradation of Methylene Blue Using Sunlight-powered Coordination Polymers Constructed from a Tetracarboxylate Linker by Adetola C. Oladipo; Abiodun D. Aderibigbe; Victoria T. Olayemi; Peter A. Ajibade; Hadley S. Clayton; Pavel N. Zolotarev; Guy J. Clarkson; Richard I. Walton; Adedibu C. Tella is a Materials Science article available to read on EtoBox.

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Here, we report the preparation of three coordination polymers -[Mn 2 (btec)] n , 1; [Ce 2 (H 2 btec)(btec)(H 2 O) 2 ] n , 2; and [Fe(Hbtec)(H 2 O) 2 ] n 3 from 1,2,4,5-benzenetetracarboxylic acid (H 4 btec). Physicochemical characterization of the coordination polymers were undertaken using microanalysis, X-ray crystallography, FTIR, PXRD, TGA/ DSC, and UV/visible spectrophotometry to confirm the identities of the compounds. The Mn(II) centres in 1 exhibit octahedral geometry coordinated by six oxygen atoms and crystallizes in the monoclinic space group I2/ m. In 2, Ce(III) centres adopt tricapped trigonal prism geometry, coordinated by three btec 4-, three from H 2 btec 2- and the oxygen from one coordinated water molecule. It crystallizes in the triclinic space group P 1. 3 is composed of an Hbtec ion and two water molecules coordinated to the Fe (III) ion. The band gaps of 1, 2, and 3 are 2.87, 3.10, and 3.61 eV, respectively, while their hydrogen peroxide-assisted efficiencies for the photodegradation of methylene blue are 91, 94, and 100 % respectively. An active species trapping experiment showed that an increase in hydroxy radicals (•OH) explains the enhanced efficiencies a

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Author

Adetola C. Oladipo; Abiodun D. Aderibigbe; Victoria T. Olayemi; Peter A. Ajibade; Hadley S. Clayton; Pavel N. Zolotarev; Guy J. Clarkson; Richard I. Walton; Adedibu C. Tella

Publisher

Elsevier BV

Published

2024

Language

EN

Field

Materials Science (Physical Sciences)