Nickel@Siloxene catalytic nanosheets for high-performance CO2 methanation
Two-dimensional (2D) materials are of considerable interest for catalyzing the heterogeneous conversion of CO 2 to synthetic fuels. In this regard, 2D siloxene nanosheets, have escaped thorough exploration, despite being composed of earth-abundant elements. Herein we demonstrate the remarkable catal...
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Published in | Nature communications Vol. 10; no. 1; pp. 2608 - 11 |
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Main Authors | , , , , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
13.06.2019
Nature Publishing Group Nature Portfolio |
Subjects | |
Online Access | Get full text |
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Summary: | Two-dimensional (2D) materials are of considerable interest for catalyzing the heterogeneous conversion of CO
2
to synthetic fuels. In this regard, 2D siloxene nanosheets, have escaped thorough exploration, despite being composed of earth-abundant elements. Herein we demonstrate the remarkable catalytic activity, selectivity, and stability of a nickel@siloxene nanocomposite; it is found that this promising catalytic performance is highly sensitive to the location of the nickel component, being on either the interior or the exterior of adjacent siloxene nanosheets. Control over the location of nickel is achieved by employing the terminal groups of siloxene and varying the solvent used during its nucleation and growth, which ultimately determines the distinct reaction intermediates and pathways for the catalytic CO
2
methanation. Significantly, a CO
2
methanation rate of 100 mmol g
Ni
−1
h
−1
is achieved with over 90% selectivity when nickel resides specifically between the sheets of siloxene.
There is a strong push to develop new catalysts and supports to convert low-value CO
2
into high-value CH
4
. Here, authors found that the internal or external confinement of Ni on multi-layered siloxene supports determined the reaction pathway, activity, selectivity, and stability in CO
2
methanation. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 Natural Science Foundation of Shanxi Province USDOE Office of Science (SC) Natural Sciences and Engineering Research Council of Canada (NSERC) Ontario Ministry of Research and Innovation (MRI) Ministry of Economic Development, Employment and Infrastructure (MEDI) AC02-06CH11357; 21878203; 21406153; 201801D121061 National Natural Science Foundation of China (NSFC) |
ISSN: | 2041-1723 2041-1723 |
DOI: | 10.1038/s41467-019-10464-x |