Muench, Falk ; Oezaslan, Mehtap ; Svoboda, Ingrid ; Ensinger, Wolfgang (2015)
Electroless plating of ultrathin palladium films: self-initiated deposition and application in microreactor fabrication.
In: Materials Research Express, 2 (10)
Article, Bibliographie
Abstract
We present new electroless palladium plating reactions, which can be applied to complex-shaped substrates and lead to homogeneous, dense and conformal palladium films consisting of small nanoparticles. Notably, autocatalytic and surface-selective metal deposition could be achieved on a wide range of materials without sensitization and activation pretreatments. This provides a facile and competitive route to directly deposit well-defined palladium nanofilms on e.g. carbon, paper, polymers or glass substrates. The reactions proceed at mild conditions and are based on easily accessible chemicals (reducing agent: hydrazine; metal source: PdCl 2 ; ligands: ethylenediaminetetraacetic acid (EDTA), acetylacetone). Additionally, the water-soluble capping agent 4-dimethylaminopyridine (DMAP) is employed to increase the bath stability, to ensure the formation of small particles and to improve the film conformity. The great potential of the outlined reactions for micro- and nanofabrication is demonstrated by coating an ion-track etched polycarbonate membrane with a uniform Pd film of approximately 20 nm thickness. The as-prepared membrane is then employed as a highly miniaturized flow reactor, using the reduction of 4-nitrophenol with NaBH 4 as a model reaction.
| Item Type: | Article |
|---|---|
| Erschienen: | 2015 |
| Creators: | Muench, Falk ; Oezaslan, Mehtap ; Svoboda, Ingrid ; Ensinger, Wolfgang |
| Type of entry: | Bibliographie |
| Title: | Electroless plating of ultrathin palladium films: self-initiated deposition and application in microreactor fabrication |
| Language: | English |
| Date: | 2015 |
| Journal or Publication Title: | Materials Research Express |
| Volume of the journal: | 2 |
| Issue Number: | 10 |
| URL / URN: | http://stacks.iop.org/2053-1591/2/i=10/a=105010 |
| Abstract: | We present new electroless palladium plating reactions, which can be applied to complex-shaped substrates and lead to homogeneous, dense and conformal palladium films consisting of small nanoparticles. Notably, autocatalytic and surface-selective metal deposition could be achieved on a wide range of materials without sensitization and activation pretreatments. This provides a facile and competitive route to directly deposit well-defined palladium nanofilms on e.g. carbon, paper, polymers or glass substrates. The reactions proceed at mild conditions and are based on easily accessible chemicals (reducing agent: hydrazine; metal source: PdCl 2 ; ligands: ethylenediaminetetraacetic acid (EDTA), acetylacetone). Additionally, the water-soluble capping agent 4-dimethylaminopyridine (DMAP) is employed to increase the bath stability, to ensure the formation of small particles and to improve the film conformity. The great potential of the outlined reactions for micro- and nanofabrication is demonstrated by coating an ion-track etched polycarbonate membrane with a uniform Pd film of approximately 20 nm thickness. The as-prepared membrane is then employed as a highly miniaturized flow reactor, using the reduction of 4-nitrophenol with NaBH 4 as a model reaction. |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Material Analytics 11 Department of Materials and Earth Sciences |
| Date Deposited: | 23 Oct 2015 09:44 |
| Last Modified: | 23 Oct 2015 09:44 |
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