Au–Pd Nanostars with Low Pd Content: Controllable Preparation and Remarkable Performance in Catalysis,The Journal of Physical Chemistry C

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Au–Pd Nanostars with Low Pd Content: Controllable Preparation and Remarkable Performance in Catalysis
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-03-30 , DOI: 10.1021/acs.jpcc.0c00031
Tao Ma ₁ , Feng Liang ₁

Affiliation

Bimetallic nanoparticles consisting of gold (Au) and palladium (Pd) have attracted considerable attention because of their effective catalysis for many chemical reactions. They are highly expected to help in the preparation of Au–Pd nanocatalysts with a controllable structure, morphology, and composition. Here, we show that Au–Pd nanostars (NSs) with tunable surface plasmon resonance absorption (from 536 to 583 nm), nanoparticle size, and palladium content (less than 7 wt %) can be obtained by adjusting the ratio of ascorbic acid and chloroauric acid. These synthesized Au–Pd NSs could be utilized efficiently for the reduction of 4-nitrophenol and nitrobenzene and the Suzuki coupling reaction. Their enhanced catalytic activity could be due to their easy accessibility of the active sites, star-like structure, and Pd-rich surface. The systematic synthesis reported in this work will not only give researchers new insights into the controllable preparation of bimetallic nanoparticles but may also inspire further studies of multifunctional nanocatalysts.

中文翻译：

低Pd含量的Au-Pd纳米星：可控的制备和出色的催化性能

由金（Au）和钯（Pd）组成的双金属纳米颗粒由于对许多化学反应的有效催化而备受关注。高度期望它们有助于制备具有可控结构，形态和组成的Au-Pd纳米催化剂。在这里，我们表明通过调节抗坏血酸和抗坏血酸的比例可以得到具有可调的表面等离子体共振吸收（从536至583 nm），纳米颗粒尺寸和钯含量（小于7 wt％）的Au-Pd纳米星（NSs）。氯金酸。这些合成的Au-Pd NSs可以有效地用于还原4-硝基苯酚和硝基苯以及Suzuki偶联反应。它们增强的催化活性可能是由于它们易于接近活性位，星形结构和富含Pd的表面。

更新日期：2020-03-30

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