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Open AccessArticle

Mercapto-Functionalized Porous Organosilica Monoliths Loaded with Gold Nanoparticles for Catalytic Application

1
Department of Polymer Materials and Engineering, Guizhou University, Guiyang 550025, China
2
National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang 550025, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Masafumi Unno
Molecules 2019, 24(23), 4366; https://doi.org/10.3390/molecules24234366
Received: 31 October 2019 / Revised: 26 November 2019 / Accepted: 27 November 2019 / Published: 29 November 2019
(This article belongs to the Special Issue Synthesis of Functional Silicon Compounds)
Porous organosilica monoliths have attracted much attention from both the academic and industrial fields due to their porous structure; excellent mechanical property and easily functionalized surface. A new mercapto-functionalized silicone monolith from a precursor mixture containing methyltrimethoxysilane; 3-mercaptopropyltrimethoxysilane; and 3-mercaptopropyl(dimethoxy)methylsilane prepared via a two-step acid/base hydrolysis–polycondensation process was reported. Silane precursor ratios and surfactant type were varied to control the networks of porous monolithic gels. Gold nanoparticles were loaded onto the surface of the porous organosilica monolith (POM). Versatile characterization techniques were utilized to investigate the properties of the synthesized materials with and without gold nanoparticles. Scanning electron microscopy was used to investigate the morphology of the as-synthesized porous monolith materials. Fourier transform infrared spectroscopy was applied to confirm the surface chemistry. 29Si nuclear magnetic resonance was used to investigate the hydrolysis and polycondensation of organosilane precursors. Transmission electron microscopy was carried out to prove the existence of well-dispersed gold nanoparticles on the porous materials. Ultraviolet–visible spectroscopy was utilized to evaluate the high catalytic performance of the as-synthesized Au/POM particles View Full-Text
Keywords: porous organosilica monolith; silicone-based materials; organic–inorganic hybrid materials; gold nanoparticles; sol-gel; catalyst porous organosilica monolith; silicone-based materials; organic–inorganic hybrid materials; gold nanoparticles; sol-gel; catalyst
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Li, H.; Pan, J.; Gao, C.; Ma, M.; Lu, L.; Xiong, Y.; Dong, F. Mercapto-Functionalized Porous Organosilica Monoliths Loaded with Gold Nanoparticles for Catalytic Application. Molecules 2019, 24, 4366.

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