A uni-micelle approach for controlled synthesis of monodisperse Au-Ag alloy nanoparticles

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-06 DOI:10.1016/j.matlet.2025.138891

Wenchao Wang , Liangang Shan , Lei Qian, Jianguo Tang, Jixian Liu

引用次数: 0

Abstract

Gold silver alloy nanoparticles (Au-Ag NPs) of small size hold immense potential in a variety of fields, including catalysis, sensing, photothermal therapy, and medicine, thanks to their synergistic effects. However, the existing synthesis methods for these nanoparticles are plagued by issues such as uneven product sizes, low yields, and high costs. In this study, we developed a uni-micelle method for controlled synthesis of monodisperse Au-Ag alloy nanoparticles. Within an oil-in-water system, the dual-soluble metal precursors can diffuse into the micelles that contain only the reductant, thereby facilitating nucleation and growth. The resulting Au-Ag alloy nanoparticles have an average size of approximately 6 nm, with a standard deviation of less than 10 %, which indicates a high degree of mono-dispersity. Moreover, Au-Ag NPs can be obtained through a single separation process, with yields reaching 58 %, respectively.

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一种控制合成单分散金-银合金纳米颗粒的单胶束方法

小尺寸的金银合金纳米颗粒（Au-Ag NPs）由于其协同效应，在催化、传感、光热治疗和医学等领域具有巨大的潜力。然而，现有的纳米颗粒合成方法存在产品尺寸不均匀、收率低、成本高等问题。在这项研究中，我们开发了一种单胶束方法来控制合成单分散的金-银合金纳米颗粒。在水包油体系中，双溶金属前驱体可以扩散到只含有还原剂的胶束中，从而促进成核和生长。所得的Au-Ag合金纳米颗粒平均尺寸约为6 nm，标准偏差小于10%，表明其具有高度的单分散性。此外，通过单一分离工艺可以获得Au-Ag NPs，收率分别达到58%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive