Singlet Oxygen Production of Photocatalytic Ir(III) Complex Impregnated unto Zeolite NaY Supercages

Abstract:

Trivalent iridium complexes have been recently studied due to the extent of its overlap with the solar spectrum as well as the accessibility of its ligand-ligand charge transfer (LLCT) transition in the UV region. Entrapment of the complex inside faujasitic zeolite NaY converts the dye molecule into a heterogeneous catalyst that has greater stability and usability than the free complex. Ship-in-a-bottle assemblies of trisphenanthroline iridium (III) complex unto zeolite NaY were found to produce singlet oxygen upon illumination. The possible use of these solid-state catalyst for waste water treatment was examined by using 9,10-dimethylanthracene (DMA) as a chemical trap for singlet oxygen. The degradation spectra was observed to be pseudo-first order with respect to DMA. Varying the time of illumination showed that the amount of DMA degraded was directly dependent on the length of UV irradiation.

• Periodical: Applied Mechanics and Materials (Volume 863)
• Pages: 89-92
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.863.89
• Online since: February 2017
• Authors: Lawrence John Paulo L. Trinidad, Ken Aldren S. Usman, Leon M.Jr. Payawan*
• Keywords: “Ship-in-a-Bottle” Assemblies, DMA, Iridium (III) Complex, Singlet-Oxygen, Zeolite Y

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