Synthesis of Au Nanoparticles@Mesoporous Silica Templated by Neutral Block Copolymers: Application in CO Oxidation

Yi Qi Yeh; Chun Wan Yen; Hong-Ping Lin; Yu Cheng Lin; Tsung Chain Chang

doi:10.4028/www.scientific.net/MSF.505-507.655

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HomeMaterials Science ForumMaterials Science Forum Vols. 505-507Synthesis of Au Nanoparticles@Mesoporous Silica...

Synthesis of Au Nanoparticles@Mesoporous Silica Templated by Neutral Block Copolymers: Application in CO Oxidation

Abstract:

A citrate-stabilizing Au nanoparticles aqueous solution was prepared at near 0 oC by reducing tetracholoaurate(III) ions with sodium borohydride. Combining with Pluronic block copolymers, the citrate-stabilizing Au nanoparticles was nearly completely embedded in the mesoporous silica channels via fast silicification with silicate solution at near neutral pH. After calcination for removing organic templates, Au nanoparticles@mesoporous silicas of high surface area and pore volume were obtained. With different block copolymer, the pore size of the mesoporous silica can be tuned. The Au nanoparticles@SBA-15 mesoporous silica exhibits high catalytic activity to CO oxidation reaction.

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Materials Science Forum (Volumes 505-507)

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655-660

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.505-507.655

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Online since:

January 2006

Authors:

Yi Qi Yeh, Chun Wan Yen, Hong-Ping Lin, Yu Cheng Lin, Tsung Chain Chang

Keywords:

Au Nanoparticle, Mesoporous Silica, Neutral Block Copolymer, Template

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