Abstract The poor durability of commercial Pt/C catalyst in the electrocatalytic oxidation of alcohols is mainly due to the weak corrosion resistance of carbon carrier to acid and alkali, and the exfoliation/aggregation and weak resistance to CO poisoning of Pt nanoparticles. Herein, sodium tantalate, such as NaTaO3 and Na2Ta2O6, was introduced as carrier material of Pt based electrocatalyst. Various characterizations and density functional theory calculations indicated that Na2Ta2O6 exhibited superior synergistic effect on alcohol electro-oxidation, involving the improvement of electron transport, selective adsorption of CO molecule, and excellent corrosion resistance to acid and alkali. Accordingly, Pt/Na2Ta2O6 catalyst showed the excellent electrocatalytic performances, including enhanced catalytic activity, high durability and strong CO-tolerance, toward methanol and ethanol oxidation reaction in both acid and base environment.

中文翻译：

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Na2Ta2O6 在 Pt/钽酸钠中的协同作用对促进乙醇电氧化的电催化能力

摘要 商用Pt/C催化剂在醇类电催化氧化中的耐久性差，主要是由于碳载体对酸碱的耐腐蚀性较弱，以及Pt纳米颗粒的剥离/聚集和抗CO中毒能力较弱。在此，钽酸钠，如 NaTaO3 和 Na2Ta2O6，被引入作为 Pt 基电催化剂的载体材料。各种表征和密度泛函理论计算表明，Na2Ta2O6 对醇电氧化表现出优异的协同作用，包括电子传输的改善、CO 分子的选择性吸附以及优异的耐酸碱腐蚀性能。因此，Pt/Na2Ta2O6 催化剂表现出优异的电催化性能，包括增强的催化活性，