Strong red emission and catalytic properties of ZnO by adding Eu2O3 shell

The structural, optical properties and catalytic activity of [email protected]2O3 core-shell nanostructutres have been investigated systematically. Sharp intense red emissions in the range of 580–650 nm due to the intra-4f transition of Eu3+ ions are observed from the sample. It is found that some of the Eu3+ ions are in the Eu2O3-like state located at the surface of ZnO and others are doped into ZnO host. Incorporation of Eu3+ ions into a ZnO...