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https://hdl.handle.net/10356/93980
Title: | Engineering inorganic hybrid nanoparticles : tuning combination fashions of gold, platinum, and iron oxide | Authors: | Zhang, Hai Tao Ding, Jun Chow, Gan Moog Dong, Zhili |
Keywords: | DRNTU::Engineering::Materials::Nanostructured materials | Issue Date: | 2008 | Source: | Zhang, H. T., Ding, J., Chow, G. M., & Dong, Z. (2008). Engineering Inorganic Hybrid Nanoparticles: Tuning Combination Fashions of Gold, Platinum, and Iron Oxide. Langmuir, 24 (22), 13197–13202. | Series/Report no.: | Langmuir | Abstract: | Multistep colloidal chemical routes were employed to synthesize Pt/Au, Pt/iron oxide (IO), and Au/Pt/IO hybrid nanoparticles (NPs). The starting templates, Pt NPs, were synthesized by controlling the decomposition kinetics of platinum acetylacetonate in oleylamine. The morphologies of binary metal Pt/Au hybrid NPs were modulated by controllable attachment of Au nanoscale domains to Pt templates. Similarly, Pt/IO and Au/Pt/IO hybrid NPs were fabricated by the controllable attachment of Fe to the Pt or Pt/Au template NPs. The noble metal domains of as-prepared hybrid NPs had face center cubic crystal structures and did not alloy, as verified by high resolution transmission electron microscopy and X-ray diffraction spectrometry. X-ray diffraction spectrometry study indicates that the IO domains in the as-prepared NPs have a spinel structure. UV−vis study of binary metal Pt/Au hybrid NPs revealed that they have a characteristic plasmon resonance around 525 nm, while dumbbell-like Au/Pt/IO NPs had a plasmon resonance around 600 nm. Furthermore, magnetism study of the binary Pt−IO NPs clearly indicated that the interfacial interactions between Pt and IO domains could result in a shift of the blocking temperature. | URI: | https://hdl.handle.net/10356/93980 http://hdl.handle.net/10220/7410 |
DOI: | 10.1021/la802805w | Schools: | School of Materials Science & Engineering | Rights: | © 2008 American Chemical Society | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | MSE Journal Articles |
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