Turkevich法合成精密金纳米颗粒。

IF 2.6 4区 材料科学 Q3 ENGINEERING, CHEMICAL
KONA Powder and Particle Journal Pub Date : 2020-01-10 Epub Date: 2020-02-29 DOI:10.14356/kona.2020011
Jiaqi Dong, Paul L Carpinone, Georgios Pyrgiotakis, Philip Demokritou, Brij M Moudgil
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引用次数: 115

摘要

金纳米颗粒(AuNPs)表现出独特的大小依赖的物理化学性质,使它们具有广泛的应用吸引力。然而,高精度aunp的大规模可用性一直很小。所需的纳米颗粒不仅必须具有精确的尺寸和形态,而且必须具有极窄的尺寸分布,以产生准确可靠的性能。本研究旨在合成高精度的aunp,并对常用的化学合成技术之一Turkevich法的优点和局限性进行评价。采用Turkevich法合成了直径为15 ~ 50 nm的胶体AuNPs。考察了柠檬酸三钠与氯化金的摩尔比、放大量、氯化金初始浓度和反应温度等因素对反应的影响。对AuNPs的形貌、光学性质、表面化学性质和化学成分进行了全面表征。结果表明,在15 ~ 30 nm范围内合成的AuNPs尺寸和形状清晰,尺寸分布窄(PDI < 0.20)。然而,随着粒径的增大,AuNPs的多分散性增强,球形减小。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Synthesis of Precision Gold Nanoparticles Using Turkevich Method.

Gold nanoparticles (AuNPs) exhibit unique size-dependent physiochemical properties that make them attractive for a wide range of applications. However, the large-scale availability of precision AuNPs has been minimal. Not only must the required nanoparticles be of precise size and morphology, but they must also be of exceedingly narrow size distribution to yield accurate and reliable performance. The present study aims to synthesize precision AuNPs and to assess the advantages and limitations of the Turkevich method-one of the common chemical synthesis technique. Colloidal AuNPs from 15 nm to 50 nm in diameter were synthesized using the Turkevich method. The effect of the molar ratio of the reagent mixture (trisodium citrate to gold chloride), the scaled-up batch size, the initial gold chloride concentration, and the reaction temperature was studied. The morphology, optical property, surface chemistry, and chemical composition of AuNPs were thoroughly characterized. It was determined that the as-synthesized AuNPs between 15 nm and 30 nm exhibit well-defined size and shape, and narrow size distribution (PDI < 0.20). However, the AuNPs became more polydispersed and less spherical in shape as the particle size increased.

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来源期刊
KONA Powder and Particle Journal
KONA Powder and Particle Journal 工程技术-材料科学:综合
CiteScore
8.40
自引率
4.90%
发文量
35
审稿时长
>12 weeks
期刊介绍: KONA publishes papers in the broad field of powder science and technology, ranging from fundamental principles to practical applications. Papers describing technological experience and critical reviews of existing knowledge in special areas are also welcome.
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