Platinum (Pt) nanoparticles were prepared by the liquid-phase reduction of tetraammineplatinum (II) chloride ([Pt(NH₃)₄]Cl₂) using Nafion as a stabilizer under various conditions of the Nafion phase. This method is novel in its use of electrostatic interactions between the Pt complex ions and sulfonic groups in the hydrated Nafion molecules. The synthesized Pt nanoparticles of the recast film system had a cubic shape. In the case of the Nafion solution system, the Pt nanoparticles mainly had a spherical shape. The shapes and sizes of the Pt nanoparticles were strongly influenced by the Nafion phase.

中文翻译：

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利用静电稳定和全氟离聚物的簇复制合成铂纳米粒子

在Nafion相的各种条件下，使用Nafion作为稳定剂，通过液相还原氯化四氨合铂（II）（[Pt（NH ₃）₄ ] Cl ₂）制备铂（Pt）纳米颗粒。这种方法的新颖之处在于利用了水合Nafion分子中Pt络合物离子与磺酸基之间的静电相互作用。重铸膜系统的合成的Pt纳米颗粒具有立方体形状。在Nafion溶液系统的情况下，Pt纳米颗粒主要具有球形。Pt纳米粒子的形状和大小受Nafion相的强烈影响。