X-ray photoelectron spectroscopy as a probe of the interaction between rhodium acetate and ionic liquids

- X-ray photoelectron spectroscopy is used as a probe of the interaction between rhodium acetate and ionic liquids.
- The measured Rh 3d binding energies of rhodium acetate dissolved in a series of ionic liquids were found to decrease along with the increasing of the basicity of anions.
- The reduction of Rh(II) to Rh(0) in 1-octyl-3methylimidazolium acetate was monitored by XPS.
- The intensity of the metallic Rh(0) peak was found increased along with time. The surface enrichment of the new formed Rh(0) species was also concluded.