In situ synthesis of Pt nanoparticles in SBA-15 by encapsulating in modified template micelles : size restricted growth within the mesochannels

• Published in: Journal of materials chemistry Vol. 18; no. 15; pp. 1765 - 1770
• Main Authors: PRASHAR, Atul K, HODGKINS, Robert P, KUMAR, Rajiv, NANDINI DEVI, R
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 01.01.2008
• Subjects: aldehydes; aqueous-solutions; block-copolymers; catalytic-properties; Chemical synthesis methods; cinnamaldehyde; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fysik; ionic surfactants; Materials science; mesoporous silica; Methods of nanofabrication; nanocrystals; NATURAL SCIENCES; NATURVETENSKAP; Physics; selective hydrogenation; triblock copolymers; Encapsulation; Porous materials; Cationic surfactant; Template reaction; Dispersions; Precursor; Mesoporosity; Nanoparticles; Adsorption; Micelles; Growth mechanism; Surface area; Diffusion; Polymers; Nanostructured materials; Nanomaterial synthesis
• ISSN: 0959-9428; 1364-5501; 1364-5501
• DOI: 10.1039/b717991j

A truly in situ and simple method is developed for nanoparticle incorporation within the mesochannels of SBA-15 involving dispersion of metal precursors in surfactant-modified polymer micelles. The diffusion of the precursor within the micellar structure is aided by interaction with the cationic head group of the surfactant leading to a unique method to facilitate the formation of highly disperse, uniform nanoparticles molded by the walls of the mesochannels. The nanoparticle incorporated mesoporous material has a highly enhanced surface area and adsorption capabilities in comparison to its parent materials without any pore blockage which makes this method ideal for the preparation of nanocatalysts.