Fabricating palladium-ruthenium nanoparticles could lead to improved industrial processes.
The chemical elements palladium (Pd) and ruthenium (Ru) are both used separately in the chemical industry. For a long time, researchers have thought that combining the two could lead to improved and novel properties for industrial applications. However, the two elements do not readily mix together to become a single material.
A study published in the journal Science and Technology of Advanced Materials reviewed the latest research into the fabrication of Pd-Ru bimetallic nanomaterials.
Early research from the past two decades showed that simply combining Pd and Ru nanoparticles led to a mixture with better properties for industrial catalytic purposes than either of the two elements alone. Since then, many groups have reported on Pd-Ru alloy nanoparticles. By varying the fabrication methods and compositions of Pd and Ru, Pd-Ru nanomaterials with different properties arise that can be suitable in industrial applications.
In 2010, Hiroshi Kitagawa from Japan’s Kyoto University and colleagues fabricated a “solid-solution alloy” (involving the addition of the atoms of one element to the crystalline lattice of the other in a high-temperature reaction) from two neighbour elements of Pd in the periodic table, silver (Ag) and rhodium (Rh). The resultant material had attractive properties for industrial purposes, including the ability to absorb hydrogen. Rh is important in a variety of reactions in the automotive industry as well as industrial exhaust gas treatment. But it is scarce and expensive. The success of Ag-Rh led the team to speculate that, due to their similarities, combining Pd and Ru into solid-solution alloy nanoparticles might lead to a material with similar properties, providing a potential alternative to Rh.
In 2014, the team was the first to synthesize Pd-Ru solid-solution alloy nanoparticles. They found the Pd-Ru nanoparticles had higher catalytic activities compared to Ru or Pd nanoparticles. More recently, they found these nanoparticles were highly active in a catalytic process important for purifying harmful gases from exhaust gas – even outperforming Rh nanoparticles.
Further research is needed to understand how varying the size of bimetallic material affects its physical and chemical properties. For example, research has found that growing less than five ultrathin Pd films on Ru causes the resultant material to be inert to oxygen even though Pd itself is highly reactive to it. Theoretical modelling will also be important for predicting and explaining the properties of PdRu and other nanomaterials, the study concludes.
For further information please contact:
Dongshuang Wu, Kohei Kusada, Hiroshi Kitagawa*
Division of Chemistry, Graduate School of Science, Kyoto University,
Kitashirakawa, Oiwake-cho, Sakyo-ku, Kyoto 606-8502, Japan
“Recent progress in the structure control of Pd–Ru bimetallic nanomaterials”,
Dongshuang Wu, Kohei Kusada, Hiroshi Kitagawa
Science and Technology of Advanced Materials Vol. 17 (2016) p. 1221727
Published online: 19 Sep 2016
Science and Technology of Advanced Materials (STAM) is the leading open access, international journal for outstanding research articles across all aspects of materials science. Our audience is the international materials community across the disciplines of materials science, physics, chemistry, biology as well as engineering.
The journal covers a broad spectrum of materials science research including functional materials, synthesis and processing, theoretical analyses, characterization and properties of materials. Emphasis is placed on the interdisciplinary nature of materials science and issues at the forefront of the field, such as energy and environmental issues, as well as medical and bioengineering applications
For more information about the journal Science and Technology of Advanced Materials, contact
Science and Technology of Advanced Materials
Mikiko Tanifuji | Research SEA
Robust and functional – surface finishing by suspension spraying
19.09.2017 | Fraunhofer-Institut für Keramische Technologien und Systeme IKTS
Graphene and other carbon nanomaterials can replace scarce metals
19.09.2017 | Chalmers University of Technology
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...
Pathogenic bacteria are becoming resistant to common antibiotics to an ever increasing degree. One of the most difficult germs is Pseudomonas aeruginosa, a...
Scientists from the MPI for Chemical Energy Conversion report in the first issue of the new journal JOULE.
Cell Press has just released the first issue of Joule, a new journal dedicated to sustainable energy research. In this issue James Birrell, Olaf Rüdiger,...
12.09.2017 | Event News
06.09.2017 | Event News
06.09.2017 | Event News
19.09.2017 | Materials Sciences
19.09.2017 | Earth Sciences
19.09.2017 | Materials Sciences