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A globally leading technology group, Heraeus is headquartered in Hanau, Germany. Founded in 1851, it is a family-owned portfolio company which traces its roots back to a pharmacy opened by the family in 1660. Today, Heraeus combines businesses in the environmental, energy, electronics, health, mobil more
We produce Gold leaf, Powder Gold, Gold leaf in flakes, Silver and Palladium products for food, cosmetics and paint industry more
Metals are usually characterized by good electrical conductivity. This applies in particular to gold and silver. However, researchers from the Max Planck Institute for Solid State Research in Stuttgart, together with partners in Pisa and Lund, have now discovered that some precious metals lose this more
ETH researchers have created an incredibly lightweight 18-carat gold, using a matrix of plastic in place of metallic alloy elements. Lovers of gold watches and heavy jewellery will be thrilled. The objects of their desire may someday become much lighter, but without losing any of their glitter. Esp more
Clusters composed of a few atoms tend to be spherical. They are usually organized in shells of atoms around a central atom. This is the case for many elements, but not for gold! Experiments and advanced computations have shown that freestanding clusters of twenty gold atoms take on a pyramidal shape more
The Bank of England protects about £197 billion ($315bn) worth of gold, according to the mostly recently published figures. more
High molecular weight polymers, bio molecules or particles in a range of a few nanometers up to several microns are more and more important more
If you’ve been watching the Olympics, you might have assumed that the medals given out are, as advertised, made of gold, silver, and bronze. Due to metal values, however, the reality is slightly more complicated. Giving out pure gold medals would be financially crippling for the International Olympi more
Next week, the winners of this year’s batch of Nobel Prizes will be announced. Every winner receives a Nobel Prize medal, featuring a portrait of the founder of the prizes, Albert Nobel. This graphic takes a look at the composition of these medals – and how chemistry was once used to make them disap more
Today, 30 August, marks the birthday of Ernest Rutherford. Rutherford is primarily considered a physicist, but his contribution to our understanding of the atom is also important to chemistry. He was also a chemistry Nobel Prize winner, for his work on radioactivity. This graphic looks in detail at more
In this paper, we explore a variety of aqueous digestion techniques for the determination of gold, in a wide variety of mineral matrices. These include feldspar, basalt, pyrites, and other gold-containing minerals. The acid-based digestion methods compete effectively with fire assay to deliver accur more
Three novel fluorescent aminophosphine ligands have been synthesised that incorporate napthyl (L1), pyrenyl (L2) and anthraquinone (L3) chromophores into their structures. The ligands react with [AuCl(tht)] (tht = tetrahydrothiophene) to give neutral complexes of the form [AuCl(L1–3)]. Solid state, more
We facilely prepared a solid-state heterojunction photocatalyst in which zinc rhodium oxide (ZnRh2O4) and bismuth vanadium oxide (Bi4V2O11) as hydrogen (H2) and oxygen (O2) evolution photocatalysts, respectively, were connected with gold (Au) to generate ZnRh2O4/Au/Bi4V2O11. ZnRh2O4/Au/Bi4V2O11 phot more
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