Efficiency of reducing silver ions to silver nanoparticle using carbon dots

IF 1.8 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Express Pub Date : 2024-09-08 DOI:10.1088/2053-1591/ad72d0

Thi Hoa Le, Chi Thuan Nguyen, Quoc Hien Nguyen, Thai Hoa Tran and Xuan Du Dang

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Abstract

Silver nanoparticles (AgNPs) have been suitably synthesized by reduction of silver ion (Ag+) using carbon dots (CDs) as a reducing agent and polyvinylpyrrolidone (PVP) as a stabilizing agent. The purpose of this study was to clarify the efficiency of reducing agent (CDs) for the synthesis of AgNPs. The CDs and AgNPs have been characterized using UV–vis spectroscopy and transmission electron microscopy (TEM). Additionally, x-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR) were also used to characterize CDs. The particle size of CDs and AgNPs was determined by Dynamic light scattering (DLS). The results showed that the CDs with particle size of 4.6 nm could be efficiently reduce silver ion at a sufficient ratio of CDs/silver ion to be 100 ml 1 mM−1. The average size of AgNPs was 41 nm. The results of DLS measurement showed that the Zeta potential of AgNPs was −18, 8 mV. In addition, the duration of 60 min was needed to reduce silver ion completely at ambient temperature. The as-synthesized AgNPs may have a potential for antibacterial application and the other purposes as well namely catalysis, biosensor, electromagnetic coating...

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利用碳点将银离子还原成银纳米粒子的效率

银纳米粒子（AgNPs）是以碳点（CDs）为还原剂，聚乙烯吡咯烷酮（PVP）为稳定剂，通过还原银离子（Ag+）而合成的。本研究的目的是明确还原剂（CDs）在合成 AgNPs 中的效率。使用紫外-可见光谱和透射电子显微镜（TEM）对还原剂（CDs）和 AgNPs 进行了表征。此外，还使用了 X 射线衍射（XRD）和傅立叶变换红外光谱（FT-IR）来表征 CD。通过动态光散射（DLS）测定了 CD 和 AgNPs 的粒度。结果表明，当 CD/银离子的比例达到 100 ml 1 mM-1 时，粒径为 4.6 nm 的 CD 可以有效地还原银离子。AgNPs 的平均粒径为 41 nm。DLS 测量结果表明，AgNPs 的 Zeta 电位为 -18.8 mV。此外，在环境温度下，银离子完全还原需要 60 分钟。所合成的 AgNPs 不仅具有抗菌应用潜力，还可用于其他用途，如催化、生物传感器、电磁涂层......

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来源期刊

Materials Research Express MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

4.50

自引率

4.30%

发文量

640

审稿时长

12 weeks

期刊介绍： A broad, rapid peer-review journal publishing new experimental and theoretical research on the design, fabrication, properties and applications of all classes of materials.