Effect of Pt doping on properties of Ti/SnO2-Sb-Nd nano-spherical electrodes
Using one-step hydrothermal synthesis to successfully prepare Ti/SnO2-Sb-Nd-Pt nanosphere electrodes with different Pt doping amounts.SEM,XRD and XPS were applied to characterize the surface morphology,structure and chemical composition of the electrodes,respectively.The electrochemical activi-ty and stability of the electrodes were characterized via LSV,CV and accelerated service life test(ALT).The performance for NB degradation was also studied.Results showed that an appropriate amount of Pt doping formed a uniform and compact coating on the electrode surface,which improved the stability of the electrode.Although the Pt doping did not change the crystal structure of SnO2,it also reduced the adsorbed oxygen content in the coating and reduced the catalytic activity of the electrode.After 1.5％Pt doping,the ALT of the electrodes was extended from 28.0 min to 78.2 h;although the NB removal rate decreased from 96.53％to 80.61％,the total amount of theoretical degradation of NB in the actual serv-ice life increased from 62.6 mg/cm2 to 8 754.1 mg/cm2.These findings reveal good application potential for the electrodes and provide a reference for developing efficient and stable electrode materials.
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