摘要
通过改进的Frens法,制备出含金量不同的Au-Ag合金纳米颗粒和Ag@Au纳米颗粒.通过测试,UV-Vis光谱结果表明,Au-Ag合金纳米颗粒只有一个介于Au、Ag峰值之间的等离子体共振峰;且峰值与金的摩尔分数呈线性关系.SEM、TEM结果表明Ag@Au纳米颗粒有约为13 nm的壳层;而Au-Ag合金纳米颗粒没有核壳结构,说明是合金,并且随着Au-Ag合金中Au的成分的逐渐增加,粒径趋于均匀、形貌趋于稳定的类球型.
Au-Ag alloy nanoparticles and Ag@Au nanoparticles were synthesized by using a modified Frens method. Only one plasmon resonance peak of Au-Ag alloy nanoparticles was observed between that of AuNPS and AgNPS in their UV-Vis spectra and the peak has a near linear relation with the Au content. Due to SEM and TEM, the apparent Au shell of Ag@Au nanoparticles are about 13 nm, but Au-Ag alloy nanoparticles are lack of core-shell structure. Au-Ag alloy nanoparticles shift to be uniform by increasing the Au content.
出处
《河南科学》
2015年第10期1732-1735,共4页
Henan Science
基金
江苏省高校自然科学研究面上项目(15KJB43005)
