Corresponding Author

Jian-lin YAO(jlyao@suda.edu.cn)


By controlling the negative potential, Cu-based materials were deposited at the [BMIm]BF4/Pt electrode interface under the laser irradiation. The effects of laser power and irradiation time on the yield of deposition products were studied by using different laser powers and different irradiation time. The product yield could be directly determined by the size of deposition point through the observation from the optical microscope. Further mechanism study combined with the formula deduced that the thermal effect of the laser could make the electrode surface temperature rise 110 degrees, which can promote the occurrence of electrodeposition. By SEM characterization, the deposition point was formed from nanoparticle aggregation with the diameter of 50 nm. The EDS and Raman spectra showed that the product was a mixture of Cu and Cu2O. The sedimentary formation and growth process could be monitored by the changes in the intensity of the SERS signals from 1 mM of mercaptobenzoic acid (MBA). In addition, it was concluded based on the SERS experiments that no deposition products were formed without the laser irradiation.

Graphical Abstract


ionic liquids, laser, induced electrodeposition, Copper, surface enhanced Raman spectroscopy

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