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Fabrication of high quality mesoporous silica/gold film nanocomposites: calcination versus thermal hydrogen reduction

Jalani, Mohamad Azani and Yuliati, Leny and Endud, Salasiah and Lintang, Hendrik O. (2014) Fabrication of high quality mesoporous silica/gold film nanocomposites: calcination versus thermal hydrogen reduction. In: The International Science Postgraduate Conference (ISPC2014), 10-12 Mac, 2014, Skudai, Johor.

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Abstract

High quality mesoporous silica is an important nanomaterial in confinement of metal nanoparticles for potential applications as catalysts, sensors, and opto-electronic devices. Herein we report that high quality mesoporous silica/gold film nanocomposites with an interpore distance of 4.1 nm were successfully fabricated as transparent thin film by an amphiphilic trinuclear gold(I) pyrazolate complex that act as both a template in sol-gel synthesis and as a metal source in formation of gold nanoparticles (AuNPs). In contrast to the calcined thin films at 250 and 450C for 3 h, diffraction peak of d100 and transmission electron microscope (TEM) images showed high quality of mesoporous silica/gold film nanocomposites after thermal hydrogen reduction in the temperature range between 190 and 250C for 2 h. Nevertheless, both methods indicated formation of AuNPs as proved by the presence of diffraction peak at 2 = 38.20, surface plasmon resonance (SPR) peak between 500 to 580 nm, and spherical shape of TEM images.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:thermal hydrogen reduction, gold nanoparticles
Subjects:Q Science > Q Science (General)
Divisions:Science
ID Code:61373
Deposited By: Fazli Masari
Deposited On:31 Mar 2017 02:42
Last Modified:31 Mar 2017 02:42

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