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Synthesis of Pd(0) Nanoparticles in TiO2–SiO2 Xerogel

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Abstract

Pd/TiO2–SiO2 xerogels containing 0.15–0.75 wt % palladium are prepared from Pd(NO3)2 · 2H2O solutions in a mixture of tetrabutoxytitanium (TBT) and tetraethoxysilane (TEOS) in a desiccator under acetic acid–water vapors in the batch mode at 20°С followed by drying and calcination of the material at 850°С. IR spectroscopy showed that the presence of Pd(NO3)2 · 2H2O has no effect on the amount of newly formed Ti–O–Si bonds in the double oxide TiO2–SiO2 over the range of salt concentrations studied. X-ray powder diffraction showed that palladium present in the xerogel calcined at 850°С is in the form of Pd(0) nanoparticles. The electron-microscopic morphology study showed that the items prepared (Pd(0) nanoparticles) had near-spherical shapes; their sizes fell in the range 20–230 nm. A means for varying Pd(0) nanoparticle size in the material is to vary the palladium(II) salt concentration at the dissolution stage.

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Authors and Affiliations

  1. Institute of Organic Synthesis, Ural Branch, Russian Academy of Sciences, 620990, Yekaterinburg, Russia

    A. B. Shishmakov, Yu. V. Mikushina, O. V. Koryakova & L. A. Petrov

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  1. A. B. Shishmakov
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  2. Yu. V. Mikushina
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  3. O. V. Koryakova
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  4. L. A. Petrov
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Correspondence to A. B. Shishmakov.

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Translated by O. Fedorova

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Shishmakov, A.B., Mikushina, Y.V., Koryakova, O.V. et al. Synthesis of Pd(0) Nanoparticles in TiO2–SiO2 Xerogel. Russ. J. Inorg. Chem. 64, 864–869 (2019). https://doi.org/10.1134/S0036023619070155

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  • DOI: https://doi.org/10.1134/S0036023619070155

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