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Issue 20, 2019
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Porous hollow CoInOx nanocubes as a highly efficient catalyst for the catalytic combustion of toluene

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Abstract

Porous hollow HC-CoInOx nanocubes were synthesized via a SiO2 template strategy involving a cobalt-based metal–organic framework derived from a Prussian Blue analogue. As a heterogeneous catalytic material for the catalytic combustion of toluene, the hollow HC-CoInOx nanocubes displayed superior catalytic performance (T90 = 178 °C) and greatly reduced the activation energy for toluene oxidation due to their large surface area, the formation of surface dangling bands and oxygen vacancies, and increased number of weak acid sites. In comparison, the C-CoInOx sample (without the introduction of a SiO2 template) required a higher reaction temperature to achieve the same conversion of toluene (T90 = 345 °C). Especially, the insertion and coating of SiO2 in CoIn-PBA nanocubes greatly improves their thermal stability, and the nanocubic shape of the porous hollow HC-CoInOx sample can remain intact after roasting at 450 °C, while the nanocubic shape of the C-CoInOx sample without the introduction of SiO2 is partially damaged and suffers from serious aggregation under the same firing conditions. Simultaneously, the porous hollow HC-CoInOx nanocubes also exhibited excellent cycling and thermal stability for the catalytic combustion of toluene to CO2 and H2O.

Graphical abstract: Porous hollow CoInOx nanocubes as a highly efficient catalyst for the catalytic combustion of toluene

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Publication details

The article was received on 12 Dec 2018, accepted on 20 Apr 2019 and first published on 22 Apr 2019


Article type: Paper
DOI: 10.1039/C8NR10052G
Nanoscale, 2019,11, 9937-9948

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    Porous hollow CoInOx nanocubes as a highly efficient catalyst for the catalytic combustion of toluene

    F. Dong, W. Han, H. Zhao, G. Zhang and Z. Tang, Nanoscale, 2019, 11, 9937
    DOI: 10.1039/C8NR10052G

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