Continuous-flow biosynthesis of AuAg bimetallic nanoparticles in a microreactor

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	Continuous-flow biosynthesis of AuAg bimetallic nanoparticles in a microreactor
	Liu, Hongyu ; Huang, Jia ; Sun, Daohua ; Odoom-Wubah, ; Li, Jun, ; Li, Qingbiao,, ; Huang JL(黄加乐) ; Sun DH(孙道华) ; Li J(李军) ; Li QB(李清彪)
刊名	http://dx.doi.org/10.1007/s11051-014-2698-2
	2014
关键词	Bimetals Biochemistry Biosynthesis Chemical reactors Computational fluid dynamics Energy dispersive X ray analysis Flow velocity Gold High resolution transmission electron microscopy Microfluidics Nanoparticles Particle size Scanni
英文摘要	Herein, a microfluidic biosynthesis of Au–Ag bimetallic nanoparticle (NP) in a tubular microreactor, based on simultaneous reduction of HAuCl4 and AgNO3 precursors in the presence of Cacumen Platycladi (C. Platycladi) extract was studied. The flow velocity profile was numerically analyzed with computational fluid dynamics. Au–Ag bimetallic NPs with Ag/Au molar ratios of 1:1 and 2:1 were synthesized, respectively. The alloy formation, morphology, structure, and size were investigated by UV–Vis spectra analysis, transmission electron microscopy (TEM), high resolution TEM, scanning TEM, and energy-dispersive X-ray analysis. In addition, the effects of volumetric flow rate, reaction temperature, and concentration of C. Platycladi extract and NaOH on the properties of the as-synthesized Au–Ag bimetallic NPs were investigated. The results indicated that these factors could not only affect the molar ratios of the two elements in the Au–Ag bimetallic NPs, but also affect particle size which can be adjusted from 3.3 to 5.6?nm. The process was very rapid and green, since a microreactor was employed with no additional synthetic reagents used. This work is anticipated to provide useful parameters for continuous-flow biosynthesis of bimetallic NPs in microreactors.
语种	英语
出版者	Kluwer Academic Publishers
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89840]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Liu, Hongyu,Huang, Jia,Sun, Daohua,et al. Continuous-flow biosynthesis of AuAg bimetallic nanoparticles in a microreactor[J]. http://dx.doi.org/10.1007/s11051-014-2698-2,2014.
APA	Liu, Hongyu.,Huang, Jia.,Sun, Daohua.,Odoom-Wubah,.,Li, Jun,.,...&李清彪.(2014).Continuous-flow biosynthesis of AuAg bimetallic nanoparticles in a microreactor.http://dx.doi.org/10.1007/s11051-014-2698-2.
MLA	Liu, Hongyu,et al."Continuous-flow biosynthesis of AuAg bimetallic nanoparticles in a microreactor".http://dx.doi.org/10.1007/s11051-014-2698-2 (2014).