Synthesis of Nano-engineered Catalysts Consisting of Co3O4 Nanoparticles Confined in Porous SiO2

Simone Louise Zacho, Dorotea Gajdek, Jerrik Mielby, Søren Kegnæs*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Here we exploit zeolitic imidazolate frameworks ZIF-67 and ZIF-8 as precursors to obtain nanorattle catalysts with Co3O4 nanoparticles confined inside porous SiO2 shells. The method is simple and uses zeolitic imidazolate frameworks as both structural templates and sacrificial precursors. Nanorattle catalysts of different sizes and metal loadings are designed by varying the Co/Zn ratio in the zeolitic imidazolate frameworks. It is possible to obtain different metal loadings by introduction and removal of Zn using evaporation. Moreover, all produced catalysts contained small Co3O4 nanoparticles. Finally, the different catalysts are tested in CO oxidation to demonstrate the effect of variations as a proof of concept. Thus, the use of metal–organic frameworks to control properties in nanorattle catalysts proposes an alternative method for the preparation of novel catalysts and shows a new pathway for synthesis of nanostructured materials.

Original languageEnglish
JournalTopics in catalysis
Volume62
Issue number7-11
Pages (from-to)621-627
Number of pages7
ISSN1022-5528
DOIs
Publication statusPublished - 2019

Keywords

  • CO oxidation
  • Mesoporous materials
  • Metal–organic framework
  • Nanorattle catalysts
  • Templating

Cite this

@article{41703ac3accd435486559e3539ca722b,
title = "Synthesis of Nano-engineered Catalysts Consisting of Co3O4 Nanoparticles Confined in Porous SiO2",
abstract = "Here we exploit zeolitic imidazolate frameworks ZIF-67 and ZIF-8 as precursors to obtain nanorattle catalysts with Co3O4 nanoparticles confined inside porous SiO2 shells. The method is simple and uses zeolitic imidazolate frameworks as both structural templates and sacrificial precursors. Nanorattle catalysts of different sizes and metal loadings are designed by varying the Co/Zn ratio in the zeolitic imidazolate frameworks. It is possible to obtain different metal loadings by introduction and removal of Zn using evaporation. Moreover, all produced catalysts contained small Co3O4 nanoparticles. Finally, the different catalysts are tested in CO oxidation to demonstrate the effect of variations as a proof of concept. Thus, the use of metal–organic frameworks to control properties in nanorattle catalysts proposes an alternative method for the preparation of novel catalysts and shows a new pathway for synthesis of nanostructured materials.",
keywords = "CO oxidation, Mesoporous materials, Metal–organic framework, Nanorattle catalysts, Templating",
author = "Zacho, {Simone Louise} and Dorotea Gajdek and Jerrik Mielby and S{\o}ren Kegn{\ae}s",
year = "2019",
doi = "10.1007/s11244-019-01134-9",
language = "English",
volume = "62",
pages = "621--627",
journal = "Topics in Catalysis",
issn = "1022-5528",
publisher = "Springer New York",
number = "7-11",

}

Synthesis of Nano-engineered Catalysts Consisting of Co3O4 Nanoparticles Confined in Porous SiO2. / Zacho, Simone Louise; Gajdek, Dorotea; Mielby, Jerrik; Kegnæs, Søren.

In: Topics in catalysis, Vol. 62, No. 7-11, 2019, p. 621-627.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Synthesis of Nano-engineered Catalysts Consisting of Co3O4 Nanoparticles Confined in Porous SiO2

AU - Zacho, Simone Louise

AU - Gajdek, Dorotea

AU - Mielby, Jerrik

AU - Kegnæs, Søren

PY - 2019

Y1 - 2019

N2 - Here we exploit zeolitic imidazolate frameworks ZIF-67 and ZIF-8 as precursors to obtain nanorattle catalysts with Co3O4 nanoparticles confined inside porous SiO2 shells. The method is simple and uses zeolitic imidazolate frameworks as both structural templates and sacrificial precursors. Nanorattle catalysts of different sizes and metal loadings are designed by varying the Co/Zn ratio in the zeolitic imidazolate frameworks. It is possible to obtain different metal loadings by introduction and removal of Zn using evaporation. Moreover, all produced catalysts contained small Co3O4 nanoparticles. Finally, the different catalysts are tested in CO oxidation to demonstrate the effect of variations as a proof of concept. Thus, the use of metal–organic frameworks to control properties in nanorattle catalysts proposes an alternative method for the preparation of novel catalysts and shows a new pathway for synthesis of nanostructured materials.

AB - Here we exploit zeolitic imidazolate frameworks ZIF-67 and ZIF-8 as precursors to obtain nanorattle catalysts with Co3O4 nanoparticles confined inside porous SiO2 shells. The method is simple and uses zeolitic imidazolate frameworks as both structural templates and sacrificial precursors. Nanorattle catalysts of different sizes and metal loadings are designed by varying the Co/Zn ratio in the zeolitic imidazolate frameworks. It is possible to obtain different metal loadings by introduction and removal of Zn using evaporation. Moreover, all produced catalysts contained small Co3O4 nanoparticles. Finally, the different catalysts are tested in CO oxidation to demonstrate the effect of variations as a proof of concept. Thus, the use of metal–organic frameworks to control properties in nanorattle catalysts proposes an alternative method for the preparation of novel catalysts and shows a new pathway for synthesis of nanostructured materials.

KW - CO oxidation

KW - Mesoporous materials

KW - Metal–organic framework

KW - Nanorattle catalysts

KW - Templating

U2 - 10.1007/s11244-019-01134-9

DO - 10.1007/s11244-019-01134-9

M3 - Journal article

VL - 62

SP - 621

EP - 627

JO - Topics in Catalysis

JF - Topics in Catalysis

SN - 1022-5528

IS - 7-11

ER -