High-performance light-driven heterogeneous CO2 catalysis with near-unity selectivity on metal phosphides

Yang-Fan Xu, Paul N. Duchesne, Lu Wang, Alexandra Tavasoli, Feysal M. Ali, Meikun Xia, Jin-Feng Liao, Dai-Bin Kuang () and Geoffrey A. Ozin ()
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Yang-Fan Xu: University of Toronto
Paul N. Duchesne: University of Toronto
Lu Wang: University of Toronto
Alexandra Tavasoli: University of Toronto
Feysal M. Ali: University of Toronto
Meikun Xia: University of Toronto
Jin-Feng Liao: Sun Yat-sen University
Dai-Bin Kuang: Sun Yat-sen University
Geoffrey A. Ozin: University of Toronto

Nature Communications, 2020, vol. 11, issue 1, 1-8

Abstract: Abstract Akin to single-site homogeneous catalysis, a long sought-after goal is to achieve reaction site precision in heterogeneous catalysis for chemical control over patterns of activity, selectivity and stability. Herein, we report on metal phosphides as a class of material capable of realizing these attributes and unlock their potential in solar-driven CO2 hydrogenation. Selected as an archetype, Ni12P5 affords a structure based upon highly dispersed nickel nanoclusters integrated into a phosphorus lattice that harvest light intensely across the entire solar spectral range. Motivated by its panchromatic absorption and unique linearly bonded nickel-carbonyl-dominated reaction route, Ni12P5 is found to be a photothermal catalyst for the reverse water gas shift reaction, offering a CO production rate of 960 ± 12 mmol gcat−1 h−1, near 100% selectivity and long-term stability. Successful extension of this idea to Co2P analogs implies that metal phosphide materials are poised as a universal platform for high-rate and highly selective photothermal CO2 catalysis.

Date: 2020
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DOI: 10.1038/s41467-020-18943-2

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