Abstract

Pd/CNT, Pt/CNT, and Pd–Pt/CNT composites having various metal contents were prepared via ammoniate thermolysis under autoclave conditions at 180°С, and were characterized. The morphology of the thus-manufactured items was comprehensively studied by scanning electron microscopy (SEM). Metallic palladium had particles sizes in the range within 20−120 nm, and platinum in the range within 20−150 nm. X-ray powder diffraction showed that the joint reduction of palladium(II) and platinum(II) ammine complexes on carbon nanotubes under autoclave conditions yielded a Pd–Pt solid solution phase. When Pd/CNT composites were brought in contact with hydrochloric acid solutions of H₂PtCl₆ under hydrothermal conditions at 130°С, a Pd–Pt solid solution phase was also formed on carbon nanotubes.

中文翻译：

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碳纳米管在水热高压釜条件下合成Pd，Pt和Pd–Pt纳米颗粒

摘要

通过在180°C高压釜条件下进行氨水热解，制备了具有多种金属含量的Pd / CNT，Pt / CNT和Pd-Pt / CNT复合材料，并进行了表征。通过扫描电子显微镜（SEM）全面研究了如此制造的物品的形态。金属钯的颗粒尺寸在20-120 nm范围内，铂的颗粒尺寸在20-150 nm范围内。X射线粉末衍射表明，在高压釜条件下，碳纳米管上的钯（II）和铂（II）氨基配合物联合还原生成Pd–Pt固溶相。当Pd / CNT复合材料在130°C的水热条件下与H ₂ PtCl _6的盐酸溶液接触时，在碳纳米管上也形成Pd-Pt固溶相。