A Cluster of Twenty Atoms of Gold is Visualized for the First Time by Physicists
News Jul 27, 2012
Scientists at the University of Birmingham have developed a method to visualize gold on the nanoscale by using a special probe beam to image 20 atoms of gold bound together to make a cluster. The research is published in the Royal Society of Chemistry’s journal Nanoscale.
Physicists have theorized for many years how atoms of gold and other elements would be arranged and ten years ago the structure of a 20-atom tetrahedral pyramid was proposed by scientists in the US.
Birmingham physicists can now reveal this atomic arrangement for the first time by imaging the cluster with an electron microscope.
Gold is a noble metal which is unreactive and thus resistant to contamination in our every day experience, but at the smallest, nano scale it becomes highly active chemically and can be used as a catalyst for controlling chemical reactions.
Clusters of metal atoms are used in catalysis in various industries including oil refining, the food industry, fine chemicals, perfumery and pharmaceuticals as well as in fuel cells for clean power systems for cars.
Richard Palmer, the University of Birmingham’s Professor of Experimental Physics, Head of the Nanoscale Physics Research Laboratory, and lead investigator, said: ‘We are working to drive up the rate of production of these very precisely defined nano-objects to supply to companies for applications such as catalysis. Selective processes generate less waste and avoid harmful biproducts - this is green chemistry using gold.’
UK Not Ready for Brexit’s Impact on Food, Report WarnsNews
Severe problems with the UK food system are likely unless issues are addressed, according to latest expert reportREAD MORE
Precision NanoSystems to Host Nanomedicines SymposiumNews
Precision NanoSystems holds its second annual nanomedicines symposium called Nanomedicines that will discuss the latest developments in nanomedicine research.READ MORE
High Serum Serotonin Levels Found in Blood of SIDS InfantsNews
Findings from NIH-funded study could provide basis for forensic SIDS test.READ MORE
Comments | 0 ADD COMMENT
9th Edition of International Conference on Analytical Chemistry
Mar 19 - Mar 20, 2018