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

• 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.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

mesoporous silica

selective hydrogenation

catalytic-properties

triblock copolymers

ionic surfactants

aqueous-solutions

block-copolymers

cinnamaldehyde

nanocrystals

aldehydes

Physics

Fysik

Publication and Content Type

ref (subject category)

art (subject category)