Intercalation of Gold Nanoparticles into Na-Montmorillonite

Abstract:

Several type of gold precursors including pre-synthesized Au (en)₂Cl₃ and gold colloid were tried to intercalate into the layer space of Na-Montmorillonite (Na-MMT). In the preparation, DDA and PAA were employed to cap the pre-synthesized gold colloidal particles and then intercalated into Na-MMT, and the Au (en)₂Cl₃ was directly intercalated to Na-MMT through cation exchange. X-ray diffraction (XRD), fluorescence analysis (XRF) and transmission electron microscopy (TEM) were used to characterize the prepared samples. The results showed that the gold colloid modified by dodecylamine (DDA) and polyallylamine hydrochloride (PAA) respectively were successfully intercalated into the layer gallery of Na-MMT based on the mechanism of covalent capture. However, thermal treatment at 773K for 2h resulted in migration of gold nanoparticles from layer space to the out surface of the Na-MMT.

• Periodical: Advanced Materials Research (Volume 716)
• Pages: 360-363
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.716.360
• Online since: July 2013
• Authors: Peng Quan Yao, Lin Hua Zhu, Tian Si, Jin Yang
• Keywords: Gold Nanoparticles (GNP), Intercalation, Na-Montmorillonite (Na-MMT)

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