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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202104533
|2 doi
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|a pubmed24n1102.xml
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|a (DE-627)NLM330778587
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|a (NLM)34535919
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Goodman, Emmett D
|e verfasserin
|4 aut
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| 245 |
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|a Monolayer Support Control and Precise Colloidal Nanocrystals Demonstrate Metal-Support Interactions in Heterogeneous Catalysts
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 01.11.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a Electronic and geometric interactions between active and support phases are critical in determining the activity of heterogeneous catalysts, but metal-support interactions are challenging to study. Here, it is demonstrated how the combination of the monolayer-controlled formation using atomic layer deposition (ALD) and colloidal nanocrystal synthesis methods leads to catalysts with sub-nanometer precision of active and support phases, thus allowing for the study of the metal-support interactions in detail. The use of this approach in developing a fundamental understanding of support effects in Pd-catalyzed methane combustion is demonstrated. Uniform Pd nanocrystals are deposited onto Al2 O3 /SiO2 spherical supports prepared with control over morphology and Al2 O3 layer thicknesses ranging from sub-monolayer to a ≈4 nm thick uniform coating. Dramatic changes in catalytic activity depending on the coverage and structure of Al2 O3 situated at the Pd/Al2 O3 interface are observed, with even a single monolayer of alumina contributing an order of magnitude increase in reaction rate. By building the Pd/Al2 O3 interface up layer-by-layer and using uniform Pd nanocrystals, this work demonstrates the importance of controlled and tunable materials in determining metal-support interactions and catalyst activity
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|a Journal Article
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4 |
|a atomic layer deposition
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4 |
|a colloidal nanocrystals
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| 650 |
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4 |
|a heterogeneous catalysis
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| 650 |
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4 |
|a metal-support interactions
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| 650 |
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4 |
|a monolayer control
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1 |
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|a Asundi, Arun S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hoffman, Adam S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bustillo, Karen C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Stebbins, Jonathan F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bare, Simon R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Bent, Stacey F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cargnello, Matteo
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 33(2021), 44 vom: 17. Nov., Seite e2104533
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:44
|g day:17
|g month:11
|g pages:e2104533
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|u http://dx.doi.org/10.1002/adma.202104533
|3 Volltext
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|d 33
|j 2021
|e 44
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|h e2104533
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