Efficient Visible-Light Driven Photothermal Conversion of CO 2 to Methane by Nickel Nanoparticles Supported on Barium Titanate

Research output: Contribution to journalArticlepeer-review

100 Scopus citations

Abstract

Solar-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.
Original languageEnglish (US)
Pages (from-to)2008244
JournalAdvanced Functional Materials
DOIs
StatePublished - Dec 4 2020

Bibliographical note

KAUST Repository Item: Exported on 2020-12-07
Acknowledgements: Funding for this work was provided by King Abdullah University of Science and Technology (KAUST).

Fingerprint

Dive into the research topics of 'Efficient Visible-Light Driven Photothermal Conversion of CO 2 to Methane by Nickel Nanoparticles Supported on Barium Titanate'. Together they form a unique fingerprint.

Cite this