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用电化学循环伏安法和电化学石英晶体微天平(EQCM)技术研究了Sb在Au电极上不可逆吸附的电化学过程.研究结果表明,在-0.25V到0.18V(vs SCE)范围内,Sb可在Au电极上稳定吸附,并且在0.15V附近出现特征氧化还原峰.根据EQCM实验数据,在电位0.18V时,Sb在Au电极上的氧化产物是Sb2O3;同时Sb的吸附阻止了电解液中阴离子和水在Au电极上的吸附.当电极电位超过0.20V时,Sb2O3会被进一步氧化成Sb5+化合物,同时逐渐从Au电极表面脱附.
Electrochemical cyclic voltammetry and electrochemical quartz crystal microbalance (EQCM) techniques were used to study the electrochemical process of Sb irreversibly adsorbed on the Au electrode. The results show that in the range of -0.25V to 0.18V (vs SCE) Sb can be stably adsorbed on the Au electrode and a characteristic redox peak appears at around 0.15 V. According to the EQCM experimental data, the oxidation product of Sb on the Au electrode is Sb2O3 at the potential of 0.18V; meanwhile, the adsorption of Sb prevents the electrolyte Adsorption of Anions and Water on Au Electrodes Sb2O3 is further oxidized to Sb5 + compounds when the electrode potential exceeds 0.20 V, while gradually desorbing from the Au electrode surface.