Topic: gold nanoparticles

Gold is a chemically stable metal with a molar mass of 196.96657 g/m and a density of 19.3 g/cm3. It is often used for decoration and money, but its properties change strangely when its size shrinks to the nanometer level. Gold nanoparticles have special physical and chemical properties different from bulk gold because of their small size effect, surface effect, quantum size effect, and macroscopic quantum tunneling effect. Gold nanoparticles have the characteristics of high electron density,...