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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202003983
|2 doi
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|a pubmed24n1052.xml
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|a (DE-627)NLM31571350X
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|a (NLM)33000875
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Jang, Ji-Soo
|e verfasserin
|4 aut
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|a Dopant-Driven Positive Reinforcement in Ex-Solution Process
|b New Strategy to Develop Highly Capable and Durable Catalytic Materials
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|c 2020
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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 07.12.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 Wiley-VCH GmbH.
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|a The ex-solution phenomenon, a central platform for growing metal nanoparticles on the surface of host oxides in real time with high durability and a fine distribution, has recently been applied to various scientific and industrial fields, such as catalysis, sensing, and renewable energy. However, the high-temperature processing required for ex-solutions (>700 °C) limits the applicable material compositions and has hindered advances in this technique. Here, an unprecedented approach is reported for low-temperature particle ex-solution on important nanoscale binary oxides. WO3 with a nanosheet structure is selected as the parent oxide, and Ir serves as the active metal species that produces the ex-solved metallic particles. Importantly, Ir doping facilitates a phase transition in the WO3 bulk lattice, which further promotes Ir ex-solution at the oxide surface and eventually enables the formation of Ir particles (<3 nm) at temperatures as low as 300 °C. Low-temperature ex-solution effectively inhibits the agglomeration of WO3 sheets while maintaining well-dispersed ex-solved particles. Furthermore, the Ir-decorated WO3 sheets show excellent durability and H2 S selectivity when used as sensing materials, suggesting that this is a generalizable synthetic strategy for preparing highly robust heterogeneous catalysts for a variety of applications
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|a Journal Article
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|a binary oxides
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|a catalysts, ex-solution
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|a host oxides
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|a metal nanoparticles
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|a phase transitions
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|a Kim, Jun Kyu
|e verfasserin
|4 aut
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| 700 |
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|a Kim, Kyeounghak
|e verfasserin
|4 aut
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| 700 |
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|a Jung, Wan-Gil
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lim, Chaesung
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Sangwoo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Dong-Ha
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kim, Bong-Joong
|e verfasserin
|4 aut
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| 700 |
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|a Han, Jeong Woo
|e verfasserin
|4 aut
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| 700 |
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|a Jung, WooChul
|e verfasserin
|4 aut
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| 700 |
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|a Kim, Il-Doo
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 46 vom: 30. Nov., Seite e2003983
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:32
|g year:2020
|g number:46
|g day:30
|g month:11
|g pages:e2003983
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|u http://dx.doi.org/10.1002/adma.202003983
|3 Volltext
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