Abstract Conversion of toxic, indoor pollutants into innocuous products through catalytic reaction is one of the promising among other permanent solutions. γ-Al2O3 supported, Pt-based intermetallic nanoparticles (NPs) using abundantly available metal e.g., Fe (Pt-Fe; Pt3Fe and PtFe3) as catalysts are successfully prepared through a wet-impregnation method followed by calcination in the presence of H2 at 800 °C. Although the intermetallic Pt-Fe NPs are prepared at elevated temperatures, they are, however, not agglomerated and are finely dispersed on the γ-Al2O3 support with the average particle size between 4 and 6 nm. No other intermetallic or alloy phases of Pt-Fe were not observed under the set synthesis conditions. Despite the same Pt-mass loading in the both Pt-Fe catalysts, intermetallic PtFe3 catalysts showed much improved carbon monoxide (CO) oxidation activity by at least 8-fold compared to that of the intermetallic Pt3Fe catalysts. The intermetallic PtFe3 catalysts showed the enhanced activity for CO oxidation compared to that of the intermetallic Pt3Fe catalysts, however, both the intermetallic Pt-Fe catalysts showed virtually the same catalytic activity for benzene oxidation. Both the intermetallic Pt-Fe catalysts showed the stable, multi-cycle catalytic performance for the catalytic CO and benzene oxidation and retain their structure and morphology even after catalytic reaction.

中文翻译：

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用于一氧化碳和苯氧化的有序金属间化合物 Pt-Fe 纳米催化剂

摘要 通过催化反应将有毒的室内污染物转化为无害的产品是其他永久解决方案中最有前景的方法之一。γ-Al2O3 负载的 Pt 基金属间纳米粒子 (NPs) 使用大量可用的金属，例如 Fe（Pt-Fe；Pt3Fe 和 PtFe3）作为催化剂，通过湿浸法成功制备，然后在 H2 存在下在 800 ℃下煅烧℃。尽管金属间化合物 Pt-Fe NPs 是在高温下制备的，但它们不会团聚并精细分散在 γ-Al2O3 载体上，平均粒径在 4 到 6 nm 之间。在设定的合成条件下没有观察到 Pt-Fe 的其他金属间或合金相。尽管两种 Pt-Fe 催化剂中的 Pt 质量负载相同，与金属间 Pt3Fe 催化剂相比，金属间 PtFe3 催化剂的一氧化碳 (CO) 氧化活性显着提高了至少 8 倍。与金属间 Pt3Fe 催化剂相比，金属间 PtFe3 催化剂显示出增强的 CO 氧化活性，然而，两种金属间 Pt-Fe 催化剂对苯氧化的催化活性几乎相同。两种金属间 Pt-Fe 催化剂均表现出稳定的多循环催化性能，催化 CO 和苯氧化，即使在催化反应后仍保持其结构和形态。然而，这两种金属间 Pt-Fe 催化剂对苯氧化表现出几乎相同的催化活性。两种金属间 Pt-Fe 催化剂均表现出稳定的多循环催化性能，催化 CO 和苯氧化，即使在催化反应后仍保持其结构和形态。然而，这两种金属间 Pt-Fe 催化剂对苯氧化表现出几乎相同的催化活性。两种金属间 Pt-Fe 催化剂均表现出稳定的多循环催化性能，催化 CO 和苯氧化，即使在催化反应后仍保持其结构和形态。