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以一氧化碳为探针分子,研究了在金/硅基底上合理电沉积形成的铂纳米薄层的衰减全反射表面增强红外吸收效应.与外反射红外吸收光谱测得的本体铂电极表面上一氧化碳最大吸收峰强相比,铂纳米薄层的红外吸收增强了约10倍;与文献上的有关薄膜的反常红外效应相比,其峰的强度相当,但方向上却无倒转或出现双极.可应用于诸如甲醇电催化氧化的吸附中间体的灵敏检测.铂纳米膜的红外吸收增强,可能与其本身表面等离子振荡的激发有关.
Using carbon monoxide as a probe molecule, the attenuated total reflection surface enhanced infrared absorption effect of the platinum electrodeposited on the gold / silicon substrate was studied. The maximum carbon monoxide on the surface of the bulk platinum electrode measured by external reflection infrared absorption spectroscopy The infrared absorption of the platinum nanoparticle was enhanced about 10-fold compared to that of the platinum peak; the intensity of the peak was comparable to the anomalous infrared effect of the relevant film in the literature but there was no reversal or bipolar orientation in the direction. Sensitive detection of adsorbed intermediates such as electrocatalytic oxidation of methanol.The enhanced infrared absorption of platinum nanofilms may be related to the excitation of surface plasmon oscillation itself.