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运用电化学方法评价了电化学阴极还原 -阳极氧化两步法制得的以钛为基体的铂修饰的钛氧化物 ( Pt-Ti Ox/Ti)电极对甲醇电催化氧化的性能 ,结果表明 ,制得的修饰电极对甲醇氧化呈现了很高的电催化活性和好的稳定性 .通过 X光电子能谱 ( XPS)、扫描隧道显微镜 ( STM)和现场傅立叶变换红外 ( FTIR)反射光谱等技术 ,发现修饰电极对甲醇氧化具有高的电催化性能 ,可归属于纳米级 Pt粒子在 Ti Ox中的高度分散及由于 Pt和 Ti Ox的相互作用 ,使电极表面对甲醇氧化中间产物 CO的吸附量大大降低
The electrocatalytic performance of the Pt-Ti Ox / Ti electrode with Pt as substrate on the electrocatalytic oxidation of methanol was evaluated by electrochemical reduction-anodic oxidation two-step method. The results showed that the electrocatalytic oxidation of methanol The obtained modified electrode exhibited high electrocatalytic activity and good stability to methanol oxidation. The X-ray photoelectron spectroscopy (XPS), scanning tunneling microscope (STM) and field Fourier transform infrared (FTIR) The modified electrode has high electrocatalytic activity for methanol oxidation, which is attributed to the high dispersion of nano-sized Pt particles in Ti Ox and the adsorption of CO on the electrode surface due to the interaction of Pt and Ti Ox