Abstract

In this work, results of the synthesis of bimetallic nanoparticles (NPs) based on transition metals Pd, Ni, and Fe reduced by quercetin in reverse-micellar solution (RMS) of Н₂О/AOT/isooctane are presented. Using fluorescence spectroscopy, the formation of bimetallic structure of Pd_coreNi_shell NP is shown and a synergetic enhancement of optical absorbance is revealed in the plasmon resonance spectra at the wavelength values intrinsic for monometallic NPs. Investigation of the adsorption of bimetallic NPs on the surface of γ-alumina proves the advantage of palladium-containing particles with Fe_core/Pd_shell obtained as a result of targeted reduction of palladium in RMS on the surface of large Fe NPs, which appears in the increase in the adsorption effectiveness of such a structure due to stronger binding with the carrier surface. This approach decreases the amount of expensive metal during production of palladium nanocomposites through a significant decrease in production costs.

中文翻译：

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PdNi双金属纳米粒子及其反胶束复合材料的合成

摘要

在这项工作中，介绍了基于过渡金属 Pd、Ni 和 Fe 在 Н ₂ О/AOT/异辛烷的反胶束溶液 (RMS) 中被槲皮素还原的双金属纳米粒子 (NPs) 的合成结果。使用荧光光谱，显示了 Pd_核Ni_壳NP的双金属结构的形成，并且在单金属 NP 固有的波长值下的等离子体共振光谱中揭示了光吸收的协同增强。双金属纳米颗粒在γ-氧化铝表面的吸附研究证明了具有Fe_核/Pd_壳的含钯颗粒的优势由于在大 Fe NPs 表面上有针对性地还原 RMS 中的钯而获得，这表现为由于与载体表面更强的结合而增加了这种结构的吸附效率。这种方法通过显着降低生产成本来减少钯纳米复合材料生产过程中昂贵金属的用量。