Nickel@Siloxene catalytic nanosheets for high-performance CO2 methanation

Xiaoliang Yan (), Wei Sun, Liming Fan, Paul N. Duchesne, Wu Wang, Christian Kübel, Di Wang, Sai Govind Hari Kumar, Young Feng Li, Alexandra Tavasoli, Thomas E. Wood, Darius L. H. Hung, Lili Wan, Lu Wang, Rui Song, Jiuli Guo, Ilya Gourevich, Feysal M. Ali, Jingjun Lu, Ruifeng Li, Benjamin D. Hatton and Geoffrey A. Ozin ()
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Xiaoliang Yan: Taiyuan University of Technology
Wei Sun: University of Toronto
Liming Fan: Taiyuan University of Technology
Paul N. Duchesne: University of Toronto
Wu Wang: Institute of Nanotechnology (INT)
Christian Kübel: Institute of Nanotechnology (INT)
Di Wang: Institute of Nanotechnology (INT)
Sai Govind Hari Kumar: University of Toronto
Young Feng Li: University of Toronto
Alexandra Tavasoli: University of Toronto
Thomas E. Wood: University of Toronto
Darius L. H. Hung: University of Toronto
Lili Wan: University of Toronto
Lu Wang: University of Toronto
Rui Song: University of Toronto
Jiuli Guo: University of Toronto
Ilya Gourevich: University of Toronto
Feysal M. Ali: University of Toronto
Jingjun Lu: Taiyuan University of Technology
Ruifeng Li: Taiyuan University of Technology
Benjamin D. Hatton: University of Toronto
Geoffrey A. Ozin: University of Toronto

Nature Communications, 2019, vol. 10, issue 1, 1-11

Abstract: Abstract Two-dimensional (2D) materials are of considerable interest for catalyzing the heterogeneous conversion of CO2 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 CO2 methanation. Significantly, a CO2 methanation rate of 100 mmol gNi−1 h−1 is achieved with over 90% selectivity when nickel resides specifically between the sheets of siloxene.

Date: 2019
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DOI: 10.1038/s41467-019-10464-x

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