کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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818977 | 906539 | 2011 | 6 صفحه PDF | دانلود رایگان |
The facile and effective immobilization of metal nanoparticles (NPs), such as PtNPs and CuNPs, on a microstructured paper-like matrix was successfully carried out by a direct in situ synthesis of metal NPs on ZnO whiskers embedded in a ceramic paper matrix. In the reduction process of nitrogen oxide for exhaust gas purification, the as-prepared PtNPs@ZnO paper exhibited excellent catalytic performance as compared with conventional Pt-loaded honeycomb catalysts, indicating that the paper-like microstructure promotes the effective transfer of heat and reactants to the highly efficient Pt nanocatalyst. In addition, the catalyst layer was tailored by varying the stacking patterns of PtNPs@ZnO and CuNPs@ZnO papers, leading to more than 85% reduction of the precious Pt usage compared with the case of honeycomb catalysts. Thus the metal NPs@ZnO paper composites are expected to be promising catalytic materials in making effective use of limited-availability noble metals in future sustainable societies.
Journal: Composites Part B: Engineering - Volume 42, Issue 5, July 2011, Pages 1108–1113