Ligand Effect of Shape-Controlled β-Palladium Hydride Nanocrystals on Liquid-Fuel Oxidation Reactions

Mrinal Kanti Kabiraz; Jeonghyeon Kim; Won Jae Lee; Bibi Ruqia; Heon Chul Kim; Su Un Lee; Jeong Rang Kim; Seung Min Paek; Jong Wook Hong; Sang Il Choi

doi:10.1021/acs.chemmater.9b01561

Ligand Effect of Shape-Controlled β-Palladium Hydride Nanocrystals on Liquid-Fuel Oxidation Reactions

Mrinal Kanti Kabiraz, Jeonghyeon Kim, Won Jae Lee, Bibi Ruqia, Heon Chul Kim, Su Un Lee, Jeong Rang Kim, Seung Min Paek, Jong Wook Hong, Sang Il Choi

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54 Scopus citations

Abstract

The synthesis of shape-, facet-, and composition-controlled Pd-based nanocrystals and the study of their catalytic reaction mechanisms are significant to and challenging for the development of advanced catalysts applicable to direct liquid-fuel cells (DLFCs). In the present study, we prepared (100)-faceted β-PdH cubes and (111)-faceted β-PdH octahedra, which offered the opportunity to investigate the link between catalytic performance and the shape/facet/composition of nanocrystals. The β-PdH cubes and octahedra remarkably boosted catalytic activity and stability to the formic acid/methanol oxidation reaction (FAOR/MOR), due to the ligand effect originating from the interstitial alloying of β-PdH. Notably in this regard, β-PdH cubes exhibited the highest FAOR/MOR activity among Pd-based catalysts, owing to the relatively high CO tolerance on the Pd(100) facets. Our results confirm that simultaneous control of ligand and facet effects is an effective approach to the design of catalysts suitable for liquid fuel oxidation electrocatalysis.

Original language	English
Pages (from-to)	5663-5673
Number of pages	11
Journal	Chemistry of Materials
Volume	31
Issue number	15
DOIs	https://doi.org/10.1021/acs.chemmater.9b01561
State	Published - 13 Aug 2019

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title = "Ligand Effect of Shape-Controlled β-Palladium Hydride Nanocrystals on Liquid-Fuel Oxidation Reactions",

abstract = "The synthesis of shape-, facet-, and composition-controlled Pd-based nanocrystals and the study of their catalytic reaction mechanisms are significant to and challenging for the development of advanced catalysts applicable to direct liquid-fuel cells (DLFCs). In the present study, we prepared (100)-faceted β-PdH cubes and (111)-faceted β-PdH octahedra, which offered the opportunity to investigate the link between catalytic performance and the shape/facet/composition of nanocrystals. The β-PdH cubes and octahedra remarkably boosted catalytic activity and stability to the formic acid/methanol oxidation reaction (FAOR/MOR), due to the ligand effect originating from the interstitial alloying of β-PdH. Notably in this regard, β-PdH cubes exhibited the highest FAOR/MOR activity among Pd-based catalysts, owing to the relatively high CO tolerance on the Pd(100) facets. Our results confirm that simultaneous control of ligand and facet effects is an effective approach to the design of catalysts suitable for liquid fuel oxidation electrocatalysis.",

author = "Kabiraz, {Mrinal Kanti} and Jeonghyeon Kim and Lee, {Won Jae} and Bibi Ruqia and Kim, {Heon Chul} and Lee, {Su Un} and Kim, {Jeong Rang} and Paek, {Seung Min} and Hong, {Jong Wook} and Choi, {Sang Il}",

note = "Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acs.chemmater.9b01561",

language = "English",

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T1 - Ligand Effect of Shape-Controlled β-Palladium Hydride Nanocrystals on Liquid-Fuel Oxidation Reactions

AU - Kabiraz, Mrinal Kanti

AU - Kim, Jeonghyeon

AU - Lee, Won Jae

AU - Ruqia, Bibi

AU - Kim, Heon Chul

AU - Lee, Su Un

AU - Kim, Jeong Rang

AU - Paek, Seung Min

AU - Hong, Jong Wook

AU - Choi, Sang Il

PY - 2019/8/13

Y1 - 2019/8/13

N2 - The synthesis of shape-, facet-, and composition-controlled Pd-based nanocrystals and the study of their catalytic reaction mechanisms are significant to and challenging for the development of advanced catalysts applicable to direct liquid-fuel cells (DLFCs). In the present study, we prepared (100)-faceted β-PdH cubes and (111)-faceted β-PdH octahedra, which offered the opportunity to investigate the link between catalytic performance and the shape/facet/composition of nanocrystals. The β-PdH cubes and octahedra remarkably boosted catalytic activity and stability to the formic acid/methanol oxidation reaction (FAOR/MOR), due to the ligand effect originating from the interstitial alloying of β-PdH. Notably in this regard, β-PdH cubes exhibited the highest FAOR/MOR activity among Pd-based catalysts, owing to the relatively high CO tolerance on the Pd(100) facets. Our results confirm that simultaneous control of ligand and facet effects is an effective approach to the design of catalysts suitable for liquid fuel oxidation electrocatalysis.

AB - The synthesis of shape-, facet-, and composition-controlled Pd-based nanocrystals and the study of their catalytic reaction mechanisms are significant to and challenging for the development of advanced catalysts applicable to direct liquid-fuel cells (DLFCs). In the present study, we prepared (100)-faceted β-PdH cubes and (111)-faceted β-PdH octahedra, which offered the opportunity to investigate the link between catalytic performance and the shape/facet/composition of nanocrystals. The β-PdH cubes and octahedra remarkably boosted catalytic activity and stability to the formic acid/methanol oxidation reaction (FAOR/MOR), due to the ligand effect originating from the interstitial alloying of β-PdH. Notably in this regard, β-PdH cubes exhibited the highest FAOR/MOR activity among Pd-based catalysts, owing to the relatively high CO tolerance on the Pd(100) facets. Our results confirm that simultaneous control of ligand and facet effects is an effective approach to the design of catalysts suitable for liquid fuel oxidation electrocatalysis.

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DO - 10.1021/acs.chemmater.9b01561

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SN - 0897-4756

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JO - Chemistry of Materials

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IS - 15

ER -

Ligand Effect of Shape-Controlled β-Palladium Hydride Nanocrystals on Liquid-Fuel Oxidation Reactions

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