Incorporation of precious metallic nanoparticles onto a carbon support material is used to obtain an electrocatalyst for ethanol oxidation. A composite material of spherical palladium nanoparticles (Pd NPs), reduced graphene oxide (rGO), and polydopamine (PDA) on three-dimensional nickel foam (NF) substrate (Pd/rGO/PDA@NF) has been synthesized for ethanol electrocatalysis. The Pd nanoparticles were obtained via reduction of precursor K₂PdCl₄ using ascorbic acid at 60 °C for 80 min. The rGO with large specific surface area was used in catalysts to provide large amounts of active sites for Pd NPs. Meanwhile, Pd NPs as an effective ingredient in catalyst exhibited excellent electrochemical activity of ethanol oxidation. Local surface plasmon resonance was carried out to determine the optimal concentration of precursor K₂PdCl₄ aqueous solution, and the absorbance peak of Pd NPs was found at about 340–370 nm by UV-visible spectroscopy. An enhanced property of the composite material Pd/rGO/PDA@NF was demonstrated to catalyze the ethanol oxidation reaction in alkaline electrolyte solution. A higher ratio of forward scan peak current intensity (I_f) to reverse scan peak current intensity (I_b) was 1.59, which demonstrated the significant anti-poison effect to carbonaceous intermediates of the Pd/rGO/PDA@NF. The value of I_f can maintain 90.6% after 400 cycles, indicating the higher cycling stability and better electrocatalytic performance toward ethanol oxidation.

Pd/rGO/PDA@NF was synthesized by a simple method with great elecrocatalytic performance and tolerance against carbonaceous intermediate species toward ethanol oxidation.

贵金属纳米颗粒结合到碳载体材料上用于获得乙醇氧化的电催化剂。合成了球形钯纳米粒子（Pd NPs），还原氧化石墨烯（rGO）和聚多巴胺（PDA）在三维镍泡沫（NF）基材（Pd / rGO / PDA @ NF）上的复合材料，用于乙醇电催化。通过还原前体K ₂ PdCl ₄获得Pd纳米颗粒在60°C下使用抗坏血酸80分钟。具有大比表面积的rGO被用于催化剂中，以提供大量的Pd NPs活性位。同时，作为催化剂有效成分的Pd NPs具有优异的乙醇氧化电化学活性。进行了局部表面等离子体共振，以确定前体K ₂ PdCl ₄水溶液的最佳浓度，并通过紫外可见光谱在340-370 nm处发现Pd NPs的吸收峰。复合材料Pd / rGO / PDA @ NF的增强性能被证明可以催化碱性电解液中的乙醇氧化反应。正向扫描峰值电流强度（I _f）与反向扫描峰值电流强度（II _b）为1.59，表明对Pd / rGO / PDA @ NF的碳质中间体具有显着的抗毒作用。在400次循环后，I _f的值可以保持90.6％，这表明更高的循环稳定性和对乙醇氧化的更好电催化性能。

Pd / rGO / PDA @ NF是通过简单的方法合成的，具有很强的电催化性能，并且对碳质中间体对乙醇氧化具有耐受性。