Impact of capping agent removal from Au NPs@MOF core-shell nanoparticle heterogeneous catalysts

Shan Dai; Kieu Phung Ngoc; Laurence Grimaud; Sanjun Zhang; Antoine Tissot; Christian Serre

doi:10.1039/d1ta09108e

Impact of capping agent removal from Au NPs@MOF core-shell nanoparticle heterogeneous catalysts

Shan Dai, Kieu Phung Ngoc, Laurence Grimaud, Sanjun Zhang, Antoine Tissot, Christian Serre

Institute for Advanced Study in Precision Spectroscopy

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

Metal nanoparticles encased in a MOF shell have shown remarkable properties in catalysis due to potential synergistic effects. However, capping agents, commonly used to prepare these nanoparticles, lower their reactivity once embedded into the MOF. Here we present a new route to prepare polyvinylpyrrolidone (PVP)-capped Au NPs@MOF-808 core-shell composites. Simultaneously, we show for the first time that the capping PVP can be easily removed by chemical treatment while maintaining the integrity of the MOF shell. We finally show how this leads to a significant enhancement of the reactivity of Au NPs@MOF-808 composites for selective oxidation reactions.

Original language	English
Pages (from-to)	3201-3205
Number of pages	5
Journal	Journal of Materials Chemistry A
Volume	10
Issue number	6
DOIs	https://doi.org/10.1039/d1ta09108e
State	Published - 14 Feb 2022

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10.1039/d1ta09108e

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title = "Impact of capping agent removal from Au NPs@MOF core-shell nanoparticle heterogeneous catalysts",

abstract = "Metal nanoparticles encased in a MOF shell have shown remarkable properties in catalysis due to potential synergistic effects. However, capping agents, commonly used to prepare these nanoparticles, lower their reactivity once embedded into the MOF. Here we present a new route to prepare polyvinylpyrrolidone (PVP)-capped Au NPs@MOF-808 core-shell composites. Simultaneously, we show for the first time that the capping PVP can be easily removed by chemical treatment while maintaining the integrity of the MOF shell. We finally show how this leads to a significant enhancement of the reactivity of Au NPs@MOF-808 composites for selective oxidation reactions.",

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T1 - Impact of capping agent removal from Au NPs@MOF core-shell nanoparticle heterogeneous catalysts

AU - Dai, Shan

AU - Ngoc, Kieu Phung

AU - Grimaud, Laurence

AU - Zhang, Sanjun

AU - Tissot, Antoine

AU - Serre, Christian

PY - 2022/2/14

Y1 - 2022/2/14

N2 - Metal nanoparticles encased in a MOF shell have shown remarkable properties in catalysis due to potential synergistic effects. However, capping agents, commonly used to prepare these nanoparticles, lower their reactivity once embedded into the MOF. Here we present a new route to prepare polyvinylpyrrolidone (PVP)-capped Au NPs@MOF-808 core-shell composites. Simultaneously, we show for the first time that the capping PVP can be easily removed by chemical treatment while maintaining the integrity of the MOF shell. We finally show how this leads to a significant enhancement of the reactivity of Au NPs@MOF-808 composites for selective oxidation reactions.

AB - Metal nanoparticles encased in a MOF shell have shown remarkable properties in catalysis due to potential synergistic effects. However, capping agents, commonly used to prepare these nanoparticles, lower their reactivity once embedded into the MOF. Here we present a new route to prepare polyvinylpyrrolidone (PVP)-capped Au NPs@MOF-808 core-shell composites. Simultaneously, we show for the first time that the capping PVP can be easily removed by chemical treatment while maintaining the integrity of the MOF shell. We finally show how this leads to a significant enhancement of the reactivity of Au NPs@MOF-808 composites for selective oxidation reactions.

UR - https://www.scopus.com/pages/publications/85124627667

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DO - 10.1039/d1ta09108e

M3 - 文章

AN - SCOPUS:85124627667

SN - 2050-7488

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SP - 3201

EP - 3205

JO - Journal of Materials Chemistry A

JF - Journal of Materials Chemistry A

IS - 6

ER -

Impact of capping agent removal from Au NPs@MOF core-shell nanoparticle heterogeneous catalysts

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