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运用电化学循环伏安和石英晶体微天平研究了HClO4溶液中仲丁醇在Pt电极及以Sb和S吸附原子修饰的Pt(Pt/Sbad和Pt/Sad)电极上的电催化氧化过程 .从电极表面质量变化可以看出 ,仲丁醇的氧化与电极表面的氧物种有着极其密切的关系 .Pt电极表面Sb吸附原子可在较低的电位下吸附氧 ,明显提高仲丁醇的氧化活性 .与Pt电极相比 ,Sb吸附原子修饰的Pt电极使仲丁醇氧化的峰电位负移约 10 0mV .相反 ,Pt电极表面S吸附原子的氧化会消耗表面氧物种 ,抑制仲丁醇的氧化 .从电极表面质量变化提供了吸附原子电催化作用的数据
The electrocatalytic oxidation of sec-butanol in Pt (superscript 2 +) and Pt (Pt / Sbad and Pt / Sad) electrodes decorated with Sb and S atoms was studied by electrochemical cyclic voltammetry and quartz crystal microbalance. The change of electrode surface quality shows that the oxidation of sec-butanol is closely related to the oxygen species on the surface of the electrode, Sb adsorbed on the surface of Pt electrode can adsorb oxygen at a lower potential and improve the oxidation activity of sec-butanol. Compared with the Pt electrode, Sb-modified Pt electrode negatively shifts the peak potential of sec-butanol by about 10 0 mV. In contrast, the oxidation of the S atom adsorbed on the Pt electrode surface consumes surface oxygen species and inhibits sec-butanol oxidation. Data on the electrocatalysis of adsorbed atoms are provided from the change in surface quality of the electrode