Generation of silver/palladium nanoparticles by liquid flame spray

Ag–Pd alloy nanoparticles have been generated from silver and palladium nitrate precursors using a high temperature aerosol method, the liquid flame spray (LFS) process. In the LFS process, a spray aerosol of precursor liquid is introduced into a high-temperature H2–O2 flame. The primary micron-size...

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Veröffentlicht in:Journal of materials research 2004-05, Vol.19 (5), p.1544-1550
Hauptverfasser: Keskinen, H., Mäkelä, J.M., Vippola, M., Nurminen, M., Liimatainen, J., Lepistö, T., Keskinen, J.
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container_end_page 1550
container_issue 5
container_start_page 1544
container_title Journal of materials research
container_volume 19
creator Keskinen, H.
Mäkelä, J.M.
Vippola, M.
Nurminen, M.
Liimatainen, J.
Lepistö, T.
Keskinen, J.
description Ag–Pd alloy nanoparticles have been generated from silver and palladium nitrate precursors using a high temperature aerosol method, the liquid flame spray (LFS) process. In the LFS process, a spray aerosol of precursor liquid is introduced into a high-temperature H2–O2 flame. The primary micron-sized spray droplets evaporatein the flame, and the final particulate product is a result of the nucleation of the pure metal vapors shortly after the flame. In the study, three Ag–Pd molar ratios—10:90, 50:50, and 90:10—were used in the precursor. As a result of the synthesis, metalalloy nanoparticles with practically the same concentration ratios, correspondingly, were produced with the method. In the experiments, metal mass flow rates of 0.01–0.8 g/min were covered. The size of the particles was determined to be in the rangeof 10–50 nm by aerosol instrumentation. The particles were spherical and slightly agglomerated. It was concluded that the particle size can be controlled via the total precursor mass flow rate, and the composition can be controlled by the molar ratio of Ag and Pd compounds in the precursor liquid.
doi_str_mv 10.1557/JMR.2004.0207
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subjects Flame synthesis
Metal alloy
Nanoparticle
title Generation of silver/palladium nanoparticles by liquid flame spray
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