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Issue 42, 2010
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H2 formation by electron irradiation of SBA-15 materials and the effect of CuII grafting

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Abstract

Measurement of H2 production from electron irradiation (10 MeV) on SBA-15 materials has shown that adsorbed water is attacked preferentially. Silanol groups are only attacked when they are in the majority with respect to adsorbed water, however they are much less efficient at producing H2. The comparison between water content before and after electron irradiation and the corresponding H2 production indicates that water desorption is the main route to adsorbed water loss for SBA-15 materials. On the other hand, surface silanol groups are more susceptible to attack, leading to H2 production when SBA-15 samples have undergone extensive thermal treatment. Electron irradiation of SBA-15-Cu materials has shown that the presence of CuII on the surface reduces and inhibits the production of H2. This inhibiting power affects adsorbed water bonded to grafted copper but not surface silanol groups.

Graphical abstract: H2 formation by electron irradiation of SBA-15 materials and the effect of CuII grafting

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Publication details

The article was received on 02 Apr 2010, accepted on 05 Aug 2010 and first published on 01 Oct 2010


Article type: Paper
DOI: 10.1039/C0CP00115E
Citation: Phys. Chem. Chem. Phys., 2010,12, 14188-14195
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    H2 formation by electron irradiation of SBA-15 materials and the effect of CuII grafting

    N. Brodie-Linder, S. Le Caër, M. S. Alam, J. P. Renault and C. Alba-Simionesco, Phys. Chem. Chem. Phys., 2010, 12, 14188
    DOI: 10.1039/C0CP00115E

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