In Situ Reducing Synthesis of (CTAB+C₁₈NH₂)-Modified Hydrophobic Gold Nanoparticles at Room Temperature

Abstract:

The hydrophobic gold nanoparticles with monodispersity are synthesized by using n-butanol reduction in situ under the condition of alkali promotion in cetyltrimethylammonium bromide (CTAB)/n-butanol/n-heptane/HAuCl₄/NaOH(aq) W/O microemulsion at 30°C. The CTAB-stabilized gold nanoparticles are characterized by UV-vis, TEM , XRD and so on. The replacement of simple surfactant (CTAB ) with mixed surfactant CTAB/ octadecylamine can weaken the direction of CTAB to the growth of gold nanopartices and increase the monodispersity of gold nanoparticles. The effects of components of the microemulsion system on the shape, size and monodispersity of gold nanoparticles are also explored. The results show that the size of gold particles is changed by the amount of CTAB and C₁₈NH₂.

• Periodical: Applied Mechanics and Materials (Volume 618)
• Pages: 203-207
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.618.203
• Online since: August 2014
• Authors: Li Ping Chen*
• Keywords: Cetyltrimethylammonium Bromide, Hydrophobic Gold Nanoparticle, In Situ Synthesis, Octadecylamine, TEM, W/O Microemulsion

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