Platinum is a good catalyst material for selective CO oxidation, used in hydrogen fuel cells. In the reference article, core-shell nanoparticles of Ru covered with Pt show excellent catalytic properties for this reaction. The authors show that nanoparticles with an average size of 4 nm show CO conversion around room temperature, while bulk RuPt alloys are active at 60℃. The presence of Ru changes the electronic properties, further lowering the activation energy.
|Configuration||6s1 5d9 4f14|
|Melting point||1768 ℃|
|Boiling point||3825 ℃|
- Spark generation of monometallic and bimetallic aerosol nanoparticles synthesis doi:10.1016/j.jaerosci.2008.05.006
- Ru–Pt core–shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen functionality doi:10.1038/nmat2156
Key trends at the nanoscale
The pie chart presented here is based on the distribution of research literature across various fields of application research over the period 1992 to 2017. The value listed is the number of papers discussing Platinum related to nanoparticles, sorted by application field. This gives an indication which applications are being or have been researched and where the core interest is. However, the distribution does not correct for the total publications in a given application field. So, a high score for a given application field indicates there is considerable interest in the element in that field, but it may also mean the field itself has considerable more publications than other fields. Therefore, the pie chart gives a general overview only. The application fields themselves are discussed in more detail on our Nanoparticles page.
Additionally, the total number of publications provides some insight in the amount of research into Platinum used in nanoparticles in general. Typically, a well-researched element will show 1000 or more publications over the 1992-2017 period.
Alloys and composites
The graph below presents an analysis of literature on core-shell, alloy and composite particles with platinum as a component of such nanoparticles. It shows possible combinations for alloy or composite nanoparticles and reflects research interest during the 1992-2017 period.