期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 333, 期 2, 页码 679-683出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2008.10.084
关键词
Pd, Pt and Pd/Pt nanoparticles; Supercritical carbon dioxide; Dendrimer; Covalent molecular assembly; Ultrathin films
资金
- National University of Singapore
We report the formation of Pd, Pt and Pd/Pt nanoparticles in dendrimer-laden assemblies immobilized within a silica gel matrix and constructed by covalent layer-by-layer (LbL) assembly using supercritical carbon dioxide (SCCO2) as the processing medium. We show that the dendrimer plays a critical role in retaining the nanoparticle precursor within the silica gel. Smaller particle size, higher yield, a denser distribution of nanoparticles and greater stability were observed when the structures were assembled in SCCO2. (C) 2008 Elsevier Inc. All rights reserved.
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