One-Pot APTES Grafted Silica Synthesis and Modification with AgNPs by Gerardas Laurinavicius Dovydas Karoblis & Vilius Poskus

Author:Gerardas Laurinavicius, Dovydas Karoblis & Vilius Poskus
Format: pdf
Tags: In today’s chemistry, greener and more energy-efficient ways of making new materials are becoming increasingly important. In this work, two types of (3-aminopropyl) triethoxysilane-grafted silica were synthesized using a one-pot method with two different porogens: Pluronic P123 and cetyltrimethylammonium bromide, and then modified with silver nanoparticles. Both syntheses produced amorphous silica with crystalline silver. EDX and EDX elemental mapping confirmed that the modification with silver nanoparticles was successful, and an even distribution of silver on the silica surface with an average silver load of around 16% was determined. After silver nanoparticle modification, silica synthesized using cetyltrimethylammonium bromide as a porogen was mesoporous, whereas silica synthesis using Pluronic P123 as a porogen yielded a nonporous product. The synthesized silicas exhibited surface areas of 345 2 and 8.80 0.05 m2/g for samples prepared using cetyltrimethylammonium bromide and Pluronic P123 as porogens, respectively, and both silicas were stable below 250 C., silica; mesoporous materials; nonporous materials; silver nanoparticles


Download

Copyright Disclaimer:
This site does not store any files on its server. We only index and link to content provided by other sites. Please contact the content providers to delete copyright contents if any and email us, we'll remove relevant links or contents immediately.