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Apparent Fractional Dimensionality of Uranyl-Exchanged Zeolites and Their Photocatalytic Activity

机译：铀酰交换分子筛的表观分数维数及其光催化活性

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The temporal behavior of the intensity of an energy donor in the presence of energy acceptors distributed over a disordered lattice with dilation symmetry is predicted to give information about its fractal dimensionality. Using calculation and simulation, we have recently shown that the same procedure gives an apparent fractional dimensionality for lattices with translational symmetry possessing excluded volumes. In this letter, we have experimentally determined the apparent fractional dimensionality of four crystalline uranyl-exchanged zeolites from the observed decay of the uranyl ion(donor)emission in the presence of europium ions as acceptors. While no correlation is observed between the fractional dimensionality and the fraction of void or the energy-transfer efficiency on these four lattices, it is found that the zeolite with the lowest dimensionality is the most effective in the photocatalytical conversion of isopropyl alcohol to acetone. Keywords: Fractals; Zeolites; Photocatalytic activity; Reprints. (mjm)

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