Recovery of Rare Earth Metals By Electrodeposition from Ionic Liquids
Recently, our group has used ionic liquids to electrodeposit various elements and compounds, including Ge, Se, GeSx, and MoSx.3,4,5 This was done by finding and synthesizing appropriate elemental precursors and ionic liquids for electrochemical deposition. This same strategy has been employed for the electrodeposition on rare earth metals. A number of precursors have been synthesized and investigated for electrodeposition. The effect of temperature on the electrodeposition was investigated. In addition, several ionic liquids were employed to investigate the effect of the cation and anion on the deposits.
1.) Van Gosen, B.S.; Verplanck, P.L.; Long, K.R.; Gambogi, J.; Seal II, R.R. The Rare-Earth Elements – Vital to Modern Technologies and Lifestyles. United States Geological Survey, USGS Mineral Resources Program. Reston, VA. November 2014.
2.) Rare Earth Elements: A Review of Production, Processing, Recycling, and Associated Environmental Issues. Environmental Protection Agency, National Risk Management Research Laboratory. Cincinnati, OH. December 2012.
3.) Murugesan, S.; Kearns, P.; Stevenson, K.J. Langmuir. 2012, 28(13), 5513-5517.
4.) Murugesan, S.; Akkineni, A.; Chou, B.P.; Glaz, M.S.; Vanden Bout, D.A.; Stevenson, K.J. ACS Nano. 2013, 7(9), 8199-8205.
5.) Redman, D.W.; Murugesan, S.; Stevenson, K.J. Langmuir. 2014, 30, 418-425.