Synthesis and properties of Au－Fe3O4 and Ag－Fe3O4 heterodimeric nanoparticles

doi:10.1088/1674-1056/19/6/066102

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

Synthesis and properties of Au－Fe₃O₄ and Ag－Fe₃O₄ heterodimeric nanoparticles

丁皓, 申承民, 惠超, 徐梽川, 李晨, 田园, 时雪钊, 高鸿钧

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

收稿日期:2009-09-10 出版日期:2010-06-15 发布日期:2010-06-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos.~60571045 and 50872147) and the National High-Tech. Research and Development Program of China (Grant No.~2007AA03Z035).

Synthesis and properties of Au－Fe₃O₄ and Ag－Fe₃O₄ heterodimeric nanoparticles

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)^†

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

Received:2009-09-10 Online:2010-06-15 Published:2010-06-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos.~60571045 and 50872147) and the National High-Tech. Research and Development Program of China (Grant No.~2007AA03Z035).

摘要/Abstract

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.

Abstract: 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.

Key words: heterodimeric structure, monodisperse, Au--Fe₃O₄ nanoparticles

中图分类号: (Methods of micro- and nanofabrication and processing)

81.16.-c

61.46.Df (Structure of nanocrystals and nanoparticles ("colloidal" quantum dots but not gate-isolated embedded quantum dots)) 78.40.Ha (Other nonmetallic inorganics) 78.67.Bf (Nanocrystals, nanoparticles, and nanoclusters) 73.22.Lp (Collective excitations) 75.20.Ck (Nonmetals)

丁皓, 申承民, 惠超, 徐梽川, 李晨, 田园, 时雪钊, 高鸿钧. Synthesis and properties of Au－Fe₃O₄ and Ag－Fe₃O₄ heterodimeric nanoparticles[J]. 中国物理B, 2010, 19(6): 66102-066102.

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). Synthesis and properties of Au－Fe₃O₄ and Ag－Fe₃O₄ heterodimeric nanoparticles[J]. Chin. Phys. B, 2010, 19(6): 66102-066102.

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Synthesis and properties of Au－Fe₃O₄ and Ag－Fe₃O₄ heterodimeric nanoparticles

Synthesis and properties of Au－Fe₃O₄ and Ag－Fe₃O₄ heterodimeric nanoparticles

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