Preparation and characterization of dendrimer-templated Ag-Cu bimetallic nanoclusters

Guoping Li; Yunjun Luo

doi:10.1021/ic701090c

Preparation and characterization of dendrimer-templated Ag-Cu bimetallic nanoclusters

Guoping Li, Yunjun Luo^*

^*Corresponding author for this work

School of Material Science and Engineering

Research output: Contribution to journal › Article › peer-review

46 Citations (Scopus)

Abstract

Ag-Cu bimetallic nanoclusters with different shapes were prepared by a co-complexation method in the presence of PAMAM dendrimers. Small and evenly sized spherical Ag-Cu bimetallic nanoparticles were obtained with N ₂H₄·H₂O as the reducing agent, and long rod-shaped bimetallic nanoclusters were prepared with NaBH₄ as the reducing agent. The mechanisms of formation of Ag-Cu bimetallic nanolusters with different shapes were discussed. The different shapes of the cluster were likely caused by the differences in the reduction rate of metal ions with NaBH₄ and N₂H₄·H₂O. Structure characterization by TEM, UV-vis spectra, EDX, and TGA showed that, in the presence of PAMAM dendrimers, Ag-Cu alloy bimetallic nanorods were obtained with NaBH₄ reduction, and Ag-Cu bimetallic nanoparticles were prepared with N₂H₄·H₂O as the reducing agent.

Original language	English
Pages (from-to)	360-364
Number of pages	5
Journal	Inorganic Chemistry
Volume	47
Issue number	1
DOIs	https://doi.org/10.1021/ic701090c
Publication status	Published - 7 Jan 2008

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title = "Preparation and characterization of dendrimer-templated Ag-Cu bimetallic nanoclusters",

abstract = "Ag-Cu bimetallic nanoclusters with different shapes were prepared by a co-complexation method in the presence of PAMAM dendrimers. Small and evenly sized spherical Ag-Cu bimetallic nanoparticles were obtained with N 2H4·H2O as the reducing agent, and long rod-shaped bimetallic nanoclusters were prepared with NaBH4 as the reducing agent. The mechanisms of formation of Ag-Cu bimetallic nanolusters with different shapes were discussed. The different shapes of the cluster were likely caused by the differences in the reduction rate of metal ions with NaBH4 and N2H4·H2O. Structure characterization by TEM, UV-vis spectra, EDX, and TGA showed that, in the presence of PAMAM dendrimers, Ag-Cu alloy bimetallic nanorods were obtained with NaBH4 reduction, and Ag-Cu bimetallic nanoparticles were prepared with N2H4·H2O as the reducing agent.",

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T1 - Preparation and characterization of dendrimer-templated Ag-Cu bimetallic nanoclusters

AU - Li, Guoping

AU - Luo, Yunjun

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N2 - Ag-Cu bimetallic nanoclusters with different shapes were prepared by a co-complexation method in the presence of PAMAM dendrimers. Small and evenly sized spherical Ag-Cu bimetallic nanoparticles were obtained with N 2H4·H2O as the reducing agent, and long rod-shaped bimetallic nanoclusters were prepared with NaBH4 as the reducing agent. The mechanisms of formation of Ag-Cu bimetallic nanolusters with different shapes were discussed. The different shapes of the cluster were likely caused by the differences in the reduction rate of metal ions with NaBH4 and N2H4·H2O. Structure characterization by TEM, UV-vis spectra, EDX, and TGA showed that, in the presence of PAMAM dendrimers, Ag-Cu alloy bimetallic nanorods were obtained with NaBH4 reduction, and Ag-Cu bimetallic nanoparticles were prepared with N2H4·H2O as the reducing agent.

AB - Ag-Cu bimetallic nanoclusters with different shapes were prepared by a co-complexation method in the presence of PAMAM dendrimers. Small and evenly sized spherical Ag-Cu bimetallic nanoparticles were obtained with N 2H4·H2O as the reducing agent, and long rod-shaped bimetallic nanoclusters were prepared with NaBH4 as the reducing agent. The mechanisms of formation of Ag-Cu bimetallic nanolusters with different shapes were discussed. The different shapes of the cluster were likely caused by the differences in the reduction rate of metal ions with NaBH4 and N2H4·H2O. Structure characterization by TEM, UV-vis spectra, EDX, and TGA showed that, in the presence of PAMAM dendrimers, Ag-Cu alloy bimetallic nanorods were obtained with NaBH4 reduction, and Ag-Cu bimetallic nanoparticles were prepared with N2H4·H2O as the reducing agent.

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Preparation and characterization of dendrimer-templated Ag-Cu bimetallic nanoclusters

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