Abstract
A RTIL (room temperature ionic liquid) containing iodine/iodide (RTIL-I) was studied to determine its coated copper extraction efficiency on the surface of scrap Cu/indium tin oxide (ITO) thin films. According to the X-ray absorption near edge structural spectra and transmission electron microscopy observations, about 95% of Cu with the size of 80nm was stripped from scrap Cu/ITO thin film into the RTIL-I and then formed 90nm of α-CuI and CuI2− within 30min at 298K. The 31P NMR (nuclear magnetic resonance) spectra suggests [PF6]− of the RTIL-I may enhance the extraction of nanoparticles into the RTIL-I.
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