中国物理B ›› 2010, Vol. 19 ›› Issue (6): 66102-066102.doi: 10.1088/1674-1056/19/6/066102
• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇 下一篇
丁皓, 申承民, 惠超, 徐梽川, 李晨, 田园, 时雪钊, 高鸿钧
Ding Hao(丁皓), Shen Cheng-Min(申承民), Hui Chao(惠超), Xu Zhi-Chuan(徐梽川), Li Chen(李晨), Tian Yuan(田园), Shi Xue-Zhao(时雪钊), and Gao Hong-Jun (高鸿钧)†
摘要: Monodisperse Au--Fe3O4 heterodimeric nanoparticles (NPs) were prepared by injecting precursors into a hot reaction solution. The size of Au and Fe3O4 particles can be controlled by changing the injection temperature. UV--Vis spectra show that the surface plasma resonance band of Au--Fe3O4 heterodimeric NPs was evidently red-shifted compared with the resonance band of Au NPs of similar size. The as-prepared heterodimeric Au--Fe3O4 NPs exhibited superparamagnetic properties at room temperature. The Ag--Fe3O4 heterodimeric NPs were also prepared by this synthetic method simply using AgNO3 as precursor instead of HAuCl4. It is indicated that the reported method can be readily extended to the synthesis of other noble metal conjugated heterodimeric NPs.
中图分类号: (Methods of micro- and nanofabrication and processing)