Agglomerates of Au-Pt bimetallic nanoparticles: synthesis and antibacterial activity

IF 2.2 4区 工程技术 Q2 Chemistry Gold Bulletin Pub Date : 2020-05-08 DOI:10.1007/s13404-020-00277-y
R. Britto Hurtado, M. Cortez-Valadez, N. S. Flores-Lopez, M. Flores-Acosta
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引用次数: 8

Abstract

The extraction of bimetallic Au-Pt nanoparticles is interesting due to their multiple applications in catalytic processes, electronic devices, photothermal therapies, among others. On the other hand, the tendency of nanoparticles forming agglomerates may modify the behavior of the material, and thus their applications. This study shows a highly reproducible novel synthesis method, which only uses two organic agents (sucrose and ascorbic acid) as the reducing and stabilizing agents from nano-agglomerates of Au-Pt at room temperature. The TEM images show agglomerates with a mass fractal structure. We identified crystalline FCC, corresponding to the Au-Pt alloy. Furthermore, the coexistence of gold and platinum nanoparticles was shown through the EDS analysis. The UV-Vis spectrum showed that the resonance plasmon identified coincides with a great approximation to the results reported in the literature. Additionally, the agglomerates exhibited excellent antibacterial activity against bacteria Escherichia coli.

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金铂双金属纳米颗粒团聚体的合成及其抗菌活性
双金属金铂纳米颗粒的提取是有趣的,因为它们在催化过程、电子器件、光热疗法等方面有多种应用。另一方面,纳米颗粒形成团块的趋势可能会改变材料的行为,从而影响它们的应用。本研究提出了一种在室温下仅使用蔗糖和抗坏血酸两种有机试剂作为Au-Pt纳米团块的还原和稳定剂的高重复性新合成方法。TEM图像显示团块具有质量分形结构。我们发现了晶体FCC,与Au-Pt合金相对应。此外,通过能谱分析证实了金纳米粒子和铂纳米粒子的共存。紫外-可见光谱表明,所鉴定的共振等离子体与文献报道的结果有很大的近似。此外,该聚团物对大肠杆菌具有良好的抑菌活性。
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来源期刊
Gold Bulletin
Gold Bulletin 工程技术-材料科学:综合
CiteScore
3.30
自引率
4.50%
发文量
0
审稿时长
3 months
期刊介绍: Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.
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