Nanoengineering catalyst supports via layer-by-layer surface functionalization |
| |
Authors: | Wenfu Yan Shannon M Mahurin Steven H Overbury Sheng Dai |
| |
Affiliation: | (1) Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6201, USA |
| |
Abstract: | Recent progress in the layer-by-layer surface modification of oxides for the preparation of highly active and stable gold
nanocatalysts is briefly reviewed. Through a layer-by-layer surface modification approach, the surfaces of various catalyst
supports including both porous and nonporous silica materials and TiO2 nanoparticles were modified with monolayers or multilayers of distinct metal oxide ultra-thin films. The surface-modified
materials were used as supports for Au nanoparticles, resulting in highly active nanocatalysts for low-temperature CO oxidation.
Good stability against sintering under high-temperature treatment was achieved for a number of the Au catalysts through surface
modification of the support material. The surface modification of supports can be a viable route to control both the composition
and structure of support and nanoparticle interfaces, thereby tailoring the stability and activity of the supported catalyst
systems. |
| |
Keywords: | gold catalysts Au layer-by-layer surface modification CO oxidation Au nanoparticles |
本文献已被 SpringerLink 等数据库收录! |