Efficient Visible-Light Driven Photothermal Conversion of CO 2 to Methane by Nickel Nanoparticles Supported on Barium Titanate
Morlanes, Natalia Sanchez
Mohammed, Omar F.
KAUST DepartmentKAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
KAUST Solar Center (KSC)
Chemical Science Program
Chemical Engineering Program
Online Publication Date2020-12-04
Print Publication Date2021-02
Embargo End Date2021-12-04
Permanent link to this recordhttp://hdl.handle.net/10754/666278
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AbstractSolar-driven methanation represents a potentially cost-efficient and environmentally friendly route for the direct hydrogenation of CO2. Recently, photothermal catalysis, which involves the combination of both photochemical and thermochemical pathways, has emerged as a promising strategy for the production of solar fuels. For a photothermal catalyst to efficiently convert CO2 under illumination, in the absence of external heating, effective light harvesting, an excellent photothermal conversion and efficient active sites are required. Here, a new composite catalyst consisting of Ni nanoparticles supported on barium titanate that, under optimal reaction conditions, is able to hydrogenate CO2 to CH4 at nearly 100% selectivity with production rates as high as 103.7 mmol g–1 h–1 under both UV–visible and visible irradiation (production rate: 40.3 mmol g−1 h–1) is reported. Mechanistic studies suggest that reaction mostly proceeds through a nonthermal hot-electron-driven pathway, with a smaller thermal contribution.
CitationMateo, D., Morlanes, N., Maity, P., Shterk, G., Mohammed, O. F., & Gascon, J. (2020). Efficient Visible-Light Driven Photothermal Conversion of CO 2 to Methane by Nickel Nanoparticles Supported on Barium Titanate. Advanced Functional Materials, 2008244. doi:10.1002/adfm.202008244
SponsorsFunding for this work was provided by King Abdullah University of Science and Technology (KAUST).
JournalAdvanced Functional Materials