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Issue 13, 2016
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Dispersing Pd nanoparticles on N-doped TiO2: a highly selective catalyst for H2O2 synthesis

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Abstract

The selectivity of H2O2 synthesis directly from H2 and O2 over Pd/TiO2 catalysts was found to be improved greatly if TiO2 was doped by nitrogen before dispersing the Pd nanoparticles. The structure of Pd catalysts supported on different N-doped TiO2 was characterized with the combination of XRD, TEM, in situ CO-DRIFTS and XPS results. The average size of Pd particles (dPd: ∼2.2 nm) showed no discernible differences, while the chemical states of Pd atoms changed significantly over Pd/N–TiO2 treated in different atmospheres. The reaction rate decreases in the order of H2 > O2 > N2, corresponding to the same increasing order of Pd2+/Pd. Likely, dispersing Pd nanoparticles on N–TiO2 should be an effective way to tune the interface structure of Pd/PdO, which acts as the active site for H2O2 synthesis.

Graphical abstract: Dispersing Pd nanoparticles on N-doped TiO2: a highly selective catalyst for H2O2 synthesis

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Publication details

The article was received on 05 Jan 2016, accepted on 01 Mar 2016 and first published on 01 Mar 2016


Article type: Paper
DOI: 10.1039/C5CY02275D
Citation: Catal. Sci. Technol., 2016,6, 5060-5068

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    Dispersing Pd nanoparticles on N-doped TiO2: a highly selective catalyst for H2O2 synthesis

    C. Ao, P. Tian, L. Ouyang, G. Da, X. Xu, J. Xu and Y. Han, Catal. Sci. Technol., 2016, 6, 5060
    DOI: 10.1039/C5CY02275D

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