Fast synthesis of gold nanoparticles by cold atmospheric pressure plasma jet in the presence of Au+ions and a capping agent

扫码查看

原文链接

万方数据

外文摘要：Homogeneous gold nanoparticles were synthesized under atmospheric pressure using a non-thermal helium plasma jet in a single-step process.A current power supply was used to generate the plasma discharge rich in diverse reactive species.These species induce rapid chemical reactions responsible for the reduction of the gold salts upon contact with the liquid solution.In this study,spherical and monodispersed gold nanoparticles were obtained within 5 min of plasma exposure using a solution containing gold(Ⅲ)chloride hydrate(HAuC14)as a precursor and polyvinylpyrrolidone(PVP)as a capping agent to inhibit agglomerations.The formation of these metal nanoparticles was initially perceptible through a visible change in the sample's color,transitioning from light yellow to a red/pink color.This was subsequently corroborated by UV-vis spectroscopy,which revealed an optical absorption in the 520-550 nm range for Au NPs,corresponding to the surface plasmon resonance(SPR)band.An investigation into the impact of various parameters,including plasma discharge duration,precursor and capping agent concentrations,was carried out to optimize conditions for the formation of well-separated,spherical gold nanoparticles.Dynamic light scattering(DLS)was used to measure the size of these nanoparticles,transmission electron microscopy(TEM)was used to observe their morphology and X-ray diffraction(XRD)was also employed to determine their crystallographic structure.The results confirm that homogeneous spherical gold nanoparticles with an average diameter of 13 nm can be easily synthesized through a rapid,straightforward,and environmentally friendly approach utilizing a helium atmospheric pressure plasma.

外文关键词：

gold nanoparticlesnon-thermalplasma jetheliumDBD

作者：

Tatiana HABIB、José Mauricio A.CAIUT、Bruno CAILLIER

展开 >

作者单位：

Laboratoire Diagnostics des Plasmas Hors Equilibre(DPHE),Université de Toulouse,INU Champollion,Albi 81000,France

Department of Chemistry,The Nanomaterials and Luminescent Systems Group,Faculty of Philosophy,Science and Letters at Ribeirão Preto,University of São Paulo,Ribeirão Preto-SP 14040-901,Brazil

基金：

Brazilian agencies FAPESPBrazilian agencies FAPESPCAPESCNPqNational Institute of Photonics—INFO(INCTs program)Universidade de S?o Paulo(USP)Ministère de L'Enseignement Supérieur de la Recherche et de l'Innovation(France)

项目编号：

2018/10172-72019/18828-1Finance Code 001303580/2021-6

出版年：

2024

DOI：

10.1088/2058-6272/ad3499

等离子体科学和技术(英文版)

中国科学院合肥物质科学研究所中国力学学会

等离子体科学和技术(英文版)

影响因子：0.297

ISSN：1009-0630

年,卷(期)：2024.26(7)