Textural Manipulation of Mesoporous Materials for Hosting of Metallic Nanocatalysts
- 25 August 2008
- journal article
- review article
- Published by Wiley in Chemistry – A European Journal
- Vol. 14 (25), 7478-7488
- https://doi.org/10.1002/chem.200800823
Abstract
The preparation and stabilization of nanoparticles are becoming very crucial issues in the field of so‐called “nanocatalysis”. Recent developments in supramolecular self‐assembled porous materials have opened a new way to get nanoparticles hosted in the channels of such materials. In this paper, a new approach towards monodisperse and thermally stable metal nanoparticles by confining them in ordered mesoporous materials is presented, and three aspects are illustrated. Firstly, the recent progress in the functional control of mesoporous materials will be briefly introduced, and the rational tuning of the textures, pore size, and pore length is demonstrated by controlling supramolecular self‐assembly behavior. A novel synthesis of short‐pore mesoporous materials is emphasized for their easy mass transfer in both biomolecule absorption and the facile assembly of metal nanocomposites within their pore channels. In the second part, the different routes for encapsulating monodisperse nanoparticles inside channels of porous materials are discussed, which mainly includes the ion‐exchange/conventional incipient wetness impregnation, in situ encapsulation routes, organometallic methodologies, and surface functionalization schemes. A facile in situ autoreduction route is highlighted to get monodisperse metal nanoparticles with tunable sizes inside the channels of mesoporous silica. Finally, confinement of mesoporous materials is demonstrated to improve the thermal stability of monodisperse metal nanoparticles catalysts and a special emphasis will be focused on the stabilization of the metal nanoparticles with a low Tammann temperature. Several catalytic reactions concerning the catalysis of nanoparticles will be presented. These uniform nanochannels, which confine monodisperse and stable metal nanoparticles catalysts, are of great importance in the exploration of size‐dependent catalytic chemistry and further understanding the nature of catalytic reactions.Keywords
This publication has 106 references indexed in Scilit:
- One-pot Encapsulation of Pt Nanoparticles into the Mesochannels of SBA-15 and their Catalytic Dehydrogenation of MethylcyclohexaneCatalysis Letters, 2007
- Ultrafast enzyme immobilization over large-pore nanoscale mesoporous silica particlesChemical Communications, 2006
- High‐Temperature Generalized Synthesis of Stable Ordered Mesoporous Silica‐Based Materials by Using Fluorocarbon–Hydrocarbon Surfactant MixturesAngewandte Chemie-International Edition, 2003
- A New Method for the Synthesis of Highly Dispersive and Catalytically Active Platinum Nanoparticles Confined in Mesoporous ZirconiaAdvanced Materials, 2003
- SMOKE Studies of Electrodeposited Mono- and MultilayersLangmuir, 2003
- TEM Studies of Platinum Nanowires Fabricated in Mesoporous Silica MCM-41Angewandte Chemie, 2000
- TEM Studies of Platinum Nanowires Fabricated in Mesoporous Silica MCM-41Angewandte Chemie-International Edition, 2000
- Island Diffusion and Coarsening on Metal (100) SurfacesPhysical Review Letters, 1997
- Überstrukturen funktioneller Kolloide: eine Chemie im NanometerbereichAngewandte Chemie, 1997
- The Reactivity of Silver Atoms in Aqueous Solutions (A γ‐Radiolysis Study)Berichte der Bunsengesellschaft für physikalische Chemie, 1977