4.4 Article

Mono- and Bimetallic Au(Core)-Ag(Shell) Nanoparticles Mediated by Ulva reticulata Extracts

期刊

CHEMISTRYSELECT
卷 4, 期 37, 页码 11009-11014

出版社

WILEY-V C H VERLAG GMBH
DOI: 10.1002/slct.201903202

关键词

biosorption; biosynthesis; green synthesis; nanoparticles; Ulva reticulata

向作者/读者索取更多资源

This research reports the fabrication of silver, gold and gold-silver bimetallic nanoparticles (NPs) using aqueous extracts of green marine alga Ulva reticulata. Analysis by UV-Vis spectrometry, X-ray diffraction, energy dispersive X-ray spectroscopy, scanning electron microscopy, transmission electron microscopy and Fourier transform infrared spectroscopy confirmed the biosynthesis of NPs by the seaweed extract. Surface plasmon resonances (SPR) were recorded at 439, 539 and 528 nm for silver (AgNPs), gold (AuNPs) and bimetal (Au core-Ag shell) NPs, respectively. AgNPs and AuNPs were mostly spherical in shape with size range of 7 to 36 and 19 to 32 nm, respectively, whereas Au-Ag NPs showed core-shell formation with star like structure shaped nanoparticles with size range of 57 to 230 nm. The results confirmed that Au ions reduced faster than Ag and the resultant bimetallic nanoparticles arrangement were found to be Au core and Ag shell. Chemical constituents such as ulvan and other polysaccharides of the green seaweed extract were identified as reducing and stabilizing agents for nanoparticles formation.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据