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Issue 11, 2013
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Laser flash photolysis study of photocatalytic properties of pillared interlayered clays and Fe,Al-silica mesoporous catalysts

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Abstract

Laser flash photolysis was applied to determine the primary photochemical processes over iron-containing clay (montmorillonite KSF), pillared interlayered clays (PILCs) and mesoporous mesophase iron silicate materials (MMMs). For KSF, the homogeneous photochemical reaction of Fe(III) leached from the clay material resulted in the formation of OH radicals, which were monitored by means of their reaction with methyl viologen dication (MV2+). For PILCs and MMMs, no leaching of Fe(III) to the solution nor hydroxyl radical formation were observed. Nevertheless, these catalysts were found to exhibit a sufficient effect on phenol photoionization. The increase in quantum yields of PhO radicals is caused by the effect of PILCs and MMMs and is explained by heterogeneous processes on the surface of catalyst particles.

Graphical abstract: Laser flash photolysis study of photocatalytic properties of pillared interlayered clays and Fe,Al-silica mesoporous catalysts

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Article information


Submitted
12 Apr 2013
Accepted
02 Jul 2013
First published
03 Jul 2013

Photochem. Photobiol. Sci., 2013,12, 1939-1947
Article type
Paper

Laser flash photolysis study of photocatalytic properties of pillared interlayered clays and Fe,Al-silica mesoporous catalysts

E. M. Glebov, I. P. Pozdnyakov, V. P. Grivin, V. F. Plyusnin, N. M. Bazhin, X. Zhang, F. Wu and M. N. Timofeeva, Photochem. Photobiol. Sci., 2013, 12, 1939
DOI: 10.1039/C3PP50112D

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