Synthesis and catalytic properties of nanoporous Pd-based alloys: chemical vs. electrochemical de-alloying of Pd-Ni-Si glasses

L. Mihaylov; E. Vassileva; L. Lyubenova; A. Inoue; T. Spassov

doi:10.1117/12.2553420

30 December 2019 Synthesis and catalytic properties of nanoporous Pd-based alloys: chemical vs. electrochemical de-alloying of Pd-Ni-Si glasses

L. Mihaylov, E. Vassileva, L. Lyubenova, A. Inoue, T. Spassov

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Proceedings Volume 11332, International Conference on Quantum, Nonlinear, and Nanophotonics 2019 (ICQNN 2019); 1133206 (2019) https://doi.org/10.1117/12.2553420
Event: International Conference on Quantum, Nonlinear, and Nanophotonics 2019 (ICQNN 2019), 2019, Sofia, Bulgaria

Abstract

In the course of our studies on the synthesis of porous metals by de-alloying of amorphous precursors the present work was devoted to the influence of alloy composition and conditions of selective dissolution of palladium based glasses on the microstructure of the final porous material. More pronounced three-dimensional ligament structure was found at the chemically de-alloyed glasses compared to those treated electrochemically. Noticeable difference in the size of the pores and ligaments between chemically and electrochemically partially dissolved Pd₃₀Ni₅₀Si₂₀ glasses compared to Pd₄₀Ni₄₀Si₂₀ was also observed. Superior catalytic activity towards oxidation of ethanol of the porous metal prepared by de-alloying Pd₃₀Ni₅₀Si₂₀ compared to that of the de-alloyed Pd₄₀Ni₄₀Si₂₀ was established.

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L. Mihaylov, E. Vassileva, L. Lyubenova, A. Inoue, and T. Spassov "Synthesis and catalytic properties of nanoporous Pd-based alloys: chemical vs. electrochemical de-alloying of Pd-Ni-Si glasses", Proc. SPIE 11332, International Conference on Quantum, Nonlinear, and Nanophotonics 2019 (ICQNN 2019), 1133206 (30 December 2019); https://doi.org/10.1117/12.2553420

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KEYWORDS

Palladium

Nickel

Silicon

Glasses

Corrosion

Oxidation

Bioalcohols

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