Raman spectroscopic studies on coadsorption of thiourea with various electrolyte anions at silver electrodes
- 化学化工－已发表论文 
SSurface enhanced Raman spectroscopy(SE:RS) has been used to study the electrochemical coadsorption of TU at silver electrodes in solutions containing nitric acid,sulphur ic acid and perchloric acid respectively or any, two of them. It was found that these different anions can br induce-coadsorbed simultaneously oil the silver surface through the protonated amino group of TU in the mixed acids system. The coadsorption ability of the anions are in the order of SO42- >NO3- > ClO4- at the potentials of greater than or equal to-0.6 V or SO42- > ClO4- > NO3- at the potentials of less than or equal to -0.8 V. The stability of TU on the surface of Ag electrode depends not only on the electrode potential but also on the nature of electrolyte anions coadsopbed.