Abstract：Using citrate as protector, Au-Ag alloy nanoparticles with different molar ratios were prepared with hydrazine as the reducer. One plasmon band between monometallic Ag and Au was observed in their UV-Vis spectra. And the peak of alloy shifted linearly with the ratio of Au changing in the alloy. By UV-Vis spectra, the course of reaction of the alloy colloid with HAuCl4 was studied. The result shows that the UV-Vis spectra of the alloy colloid changed regularly with the adding volume of HAuCl4 increasing. And there is a linear interval in it with the change in the calculated ratio of Au. With the former studies, the course can be attributed to the dealloy of Au/Ag alloy.
金毅亮, 姚建林, 顾仁敖*. Au/Ag合金溶胶与HCuCl4反应过程的紫外光谱研究[J]. 光谱学与光谱分析, 2009, 29(10): 2815-2819.
JIN Yi-liang, YAO Jian-lin, GU Ren-ao*. UV-Vis Studies on the Course of Reaction of Au/Ag Alloy Colloid with Hydrogen Tetrachloroaurate(Ⅲ) Hydrate . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(10): 2815-2819.
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