Novel ionic liquid assisted synthesis of SnO2 microspheres

Tin oxide (SnO2) microspheres with an average 2.5 μm in diameters have been successfully synthesized through a rapid hydrothermal process heating by microwave in the presence of an ionic liquid 1-butyl-3-methyl imidazolium tetrafluoroborate. X-ray diffraction, scanning electron microscopy and transmission electron microscopy are used to characterize the morphology and crystalline structure of the microspheres. The as-synthesized SnO2 microspheres exhibit a tetragonal rutile structure. The mechanism of the microspheres formation is proposed.

Graphical abstractTin oxide (SnO2) microspheres with an average 2.5 μm in diameters have been successfully synthesized through a rapid hydrothermal process heating by microwave in the presence of an ionic liquid 1-butyl-3-methyl imidazolium tetrafluoroborate.Figure optionsDownload full-size imageDownload as PowerPoint slide